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Ün EŞ, Pekel G, Tasci M, Bahar A, Pekel E, Cetin EN, Subasi M, Cobankara V. Thickness of anterior sclera and corneal layers in systemic sclerosis. Int Ophthalmol 2024; 44:137. [PMID: 38489070 DOI: 10.1007/s10792-024-03013-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 10/29/2023] [Indexed: 03/17/2024]
Abstract
PURPOSE To evaluate the thickness of anterior sclera and corneal layers in patients with systemic sclerosis. METHODS The present cross-sectional study included 41 patients with systemic sclerosis and 41 age- and gender-matched healthy controls. The study and control groups were compared in terms of the thickness of anterior sclera, corneal epithelium, Bowman's layer, corneal stroma, and Descemet's membrane-endothelium complex. The thickness measurements were obtained using the anterior segment module of spectral-domain optical coherence tomography. RESULTS The thickness of anterior sclera, corneal epithelium, Bowman's layer, and Descemet's membrane-endothelium complex were similar in the patients with systemic sclerosis and healthy controls (P > 0.05). Total corneal thickness at the apex was 511.1 ± 33.5 µm in the systemic sclerosis group and 528.4 ± 29.5 µm in the control group (P = 0.015). The corneal stroma was thinner in the systemic sclerosis patients compared to the healthy controls (P = 0.02). CONCLUSIONS The corneal stroma was thinner in the patients with systemic sclerosis compared to that of healthy controls, while the thickness of the anterior sclera was similar in both groups.
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Affiliation(s)
- Emine Şeker Ün
- Ophthalmology Department, Pamukkale University, 20070, Denizli, Turkey.
| | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, 20070, Denizli, Turkey
| | - Murat Tasci
- Rheumatology Division, İzzet Baysal Training and Research Hospital, Bolu, Turkey
| | | | - Evre Pekel
- Denizli State Hospital, Eye Clinic, Denizli, Turkey
| | - Ebru Nevin Cetin
- Ophthalmology Department, Pamukkale University, 20070, Denizli, Turkey
| | - Mustafa Subasi
- Ophthalmology Department, Ondokuz Mayis University, Samsun, Turkey
| | - Veli Cobankara
- Rheumatology Division, Pamukkale University, Denizli, Turkey
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Sayin N, Kocak I, Pehlivanoğlu S, Pekel G, Er A, Bayramoğlu SE, Aydin A. A quantitative sonoelastography evaluation of ocular and periocular elasticity after intravitreal ranibizumab injection. J Fr Ophtalmol 2023:S0181-5512(23)00319-4. [PMID: 37598105 DOI: 10.1016/j.jfo.2023.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 01/28/2023] [Accepted: 03/05/2023] [Indexed: 08/21/2023]
Abstract
PURPOSE We evaluated changes in ocular and periocular elasticity by ultrasound (US) elastography in intravitreal ranibizumab-treated eyes and the healthy fellow eyes of patients with neovascular AMD. METHODS The study was performed on 52 eyes of 26 volunteers who ranged in age from 59 to 89 (mean 72±7.78) years old. The study group consisted of the patients with neovascular AMD treated with intravitreal ranibizumab. The fellow eyes (without choroidal neovascularization) of the study group were selected as the control group. All patients were examined with sonoelastography before intravitreal injection and at 1day, 1week, and 1month after intravitreal injection. All images were acquired with a Toshiba Aplio 500 ultrasound system (Tokyo, Japan) including software with a combined autocorrelation method and a multifrequency linear probe. The elastography values of the anterior vitreous (AV), posterior vitreous (PV), retina-choroid-sclera complex (RCS), retrobulbar fat tissue (RF), optic nerve head (ONH) and retrobulbar optic nerve (RON) were measured in each eye. RESULTS There were 13 male (50%) and 13 female (50%) participants in our study. Anterior vitreous, posterior vitreous, RCS, retrobulbar fat tissue, ONH, and RON US elastography values were similar in both groups (P˃0.05 for all). On the other hand, there was a positive correlation between the difference between baseline and 1-month PV sonoelastography values and age (r=0.47, P=0.035). CONCLUSION A single dose intravitreal Ranibizumab (Lucentis®, Genentech, USA) injection does not alter the elasticity of ocular and periocular structures.
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Affiliation(s)
- N Sayin
- University of Health Sciences, School of Medicine, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
| | - I Kocak
- University of Health Sciences, School of Medicine, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
| | - S Pehlivanoğlu
- University of Health Sciences, School of Medicine, Beyoglu Eye Training and Research Hospital, İstanbul, Turkey
| | - G Pekel
- Pamukkale University School of Medicine, Department of Ophthalmology, Denizli, Turkey
| | - A Er
- İzmir Tepecik, Training and Research Hospital, Izmir, Turkey
| | - S E Bayramoğlu
- University of Health Sciences, School of Medicine, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey
| | - A Aydin
- Near East University, School of Medicine, Lefkosa, Cyprus
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Cetin EN, Akbulut S, Tekin ZE, Yener GO, KeremBOZKURT, Pekel G, Yüksel S. Corneal and lenticular clarity in children with inflammatory disease as assessed by Scheimpflug imaging. Photodiagnosis Photodyn Ther 2022; 39:103032. [PMID: 35882290 DOI: 10.1016/j.pdpdt.2022.103032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 10/16/2022]
Abstract
BACKGROUND Corneal and lenticular optical properties are not well-documented in pediatric patients with inflammatory diseases. Here we aimed to evaluate corneal and lenticular optical density as well as corneal morphology in children with ocular and/or systemic inflammation by Scheimpflug imaging. METHODS Fifty-five eyes of 29 children with non-infectious uveitis, 56 eyes of 28 children with systemic inflammation without uveitis and 60 eyes of 31 healthy children were included. Corneal/lenticular optical density, corneal volume, central corneal thickness, keratometry were analyzed by Pentacam HR. Corneal endothelial cell density, hexagonal cell ratio and coefficient of variation were measured by specular microscope. RESULTS The mean age was 12.0±3.1 years, 11.9±4.0 years and 11.3±3.4 years whereas the female/ratio was 15/14, 15/13 and 14/17 in uveitis, systemic inflammation and control groups respectively. Uveitis type was anterior uveitis in 16 (29.1%) eyes, intermediate uveitis in 32 (58.2%) eyes and panuveitis in 7 (12.7%) eyes. Twenty-two (40%) eyes had active uveitis whereas 33 (60%) eyes had inactive uveitis. Corneal optical density was greater in uveitis group compared with other groups (p=0.001, Kruskal-Wallis test). Lenticular density and corneal parameters other than optical density were not different between the groups (p>0.05). Corneal optical density was higher in active uveitis than inactive uveitis (22/33 eyes, p=0.017). CONCLUSION Children with uveitis had decreased corneal clarity compared with systemic inflammation group and healthy controls, while lenticular clarity was similar between the groups. Corneal endothelial parameters did not change significantly based on ocular/systemic inflammation. Scheimpflug imaging provides objective corneal and lenticular optical density measurements.
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Affiliation(s)
- Ebru Nevin Cetin
- Pamukkale University, Department of Ophthalmology, Denizli, Turkey.
| | - Selen Akbulut
- Yenişehir State Hospital, Department of Ophthalmology, Bursa, Turkey
| | - Zahide Ekici Tekin
- Ankara City Hospital, Department of Pediatric of Rheumatology, Ankara, Turkey
| | - Gulcin Otar Yener
- Gaziantep Medical Park Hospital, Department of Pediatric Rheumatology, Gaziantep, Turkey
| | - KeremBOZKURT
- Servergazi State Hospital, Department of Ophthalmology, Denizli, Turkey
| | - Gökhan Pekel
- Pamukkale University, Department of Ophthalmology, Denizli, Turkey
| | - Selçuk Yüksel
- Pamukkale University, Department of Pediatric Rheumatology, Denizli, Turkey
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Abstract
Purpose: The aim of the study was to investigate iris alterations in diabetic retinopathy (DR). Methods: Sixty-nine eyes of 69 patients were recruited and three groups of patients were examined: proliferative DR ( n = 25), non-proliferative DR ( n = 21) and healthy controls ( n = 23). Macular optical coherence tomography (OCT), anterior segment iris OCT, and slit lamp digital camera photographs were taken. The thicknesses of the iris at a distance of 1 mm, 2 mm, and 3 mm from pupil margin were measured via iris OCT. Iris crypt count, furrow extent, color tone and collarette/diameter ratio were measured by means of anterior segment photography. Visual acuity, refractive error, intraocular pressure, and numbers of intravitreal injections were also recorded. Results: The iris thickness measurements at 1 mm from pupil margin were significantly correlated with the macular thickness measurements ( r = 0.32, p = 0.016). In the proliferative DR group, total number of injections were significantly correlated with the iris thickness measurements at 1 mm ( r = 0.25, p = 0.04). The iris thickness measurements at distances 1 mm, 2 mm, and 3 mm from the pupil margin were similar in all of the groups ( p > 0.05). Iris thickness did not correlate with age, intra-ocular pressure and collarette iris ratio in all the participants ( p > 0.05). Conclusion: Iris thickness is similar in diabetic patients and healthy controls. Meanwhile, iris thickness near the pupillary margin is positively correlated with macular thickness.
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Affiliation(s)
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Evre Pekel
- Denizli State Hospital, Eye Clinic, Denizli, Turkey
| | - Ebru Nevin Cetin
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Bahar A, Pekel G. Early term ocular changes after cold compress application. Arq Bras Oftalmol 2021; 85:229-234. [PMID: 34586232 DOI: 10.5935/0004-2749.20220031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/20/2020] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To examine changes in the eyes after cold compress application at the early stage. METHOD A total of 62 eyes from 62 healthy adult participants were included in this cross-sectional and comparative study. The subfoveal choroidal thickness and retinal nerve fiber thickness were measured by spectral-domain ocular coherence tomography. The central corneal thickness, anterior segment volume and depth, iridocorneal angle, and pupil diameter were measured by means of the Scheimpflug anterior segment imaging method. The measurements were repeated after 10 min of cold compress application, which was applied using special packs. The procedures were then repeated with non-cold packages to exclude the effect of pressure. RESULTS The average age of the participants was 30.74 ± 5.82 years. There was no significant change in the central corneal thickness after cold compress application, and there was a significant decrease in the anterior segment volume (p<0.001), anterior segment depth (p<0.001), and pupil diameter. Moreover, the iridocorneal angle increased (p=0.002). The subfoveal choroidal thickness decreased after the application of cold compress (p<0.001). The overall disk thickness (p=0.034) and superior nasal scale (p=0.007) significantly decreased after the cold compress was administered during the evaluation of optic nerve fiber thickness. In contrast to that with the cold application, the subfoveal choroidal thickness and optic nerve fiber thickness did not change after the non-cold compress application (p>0.05). CONCLUSION Cold compress application may thus cause some physiological changes in the eyes, which necessitates the examination of its usage and effects.
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Affiliation(s)
- Alperen Bahar
- Ophthalmology Department, Yozgat State Hospital, Yozgat, Turkey
| | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
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Cetin EN, Bozkurt K, Akbulut S, Pekel G, Taşcı M, Çobankara V. Corneal and anterior chamber morphology in patients with nonınfectious ıntraocular ınflammation. Arq Bras Oftalmol 2021; 84:220-224. [PMID: 33567019 DOI: 10.5935/0004-2749.20210030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 03/27/2020] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To evaluate the corneal and anterior chamber morphology in phakic eyes with noninfectious intraocular inflammation. METHODS This study included 59 eyes with active uveitis, 62 with inactive uveitis, and 95 healthy eyes. Corneal endothelial cell density, hexagonal cell ratio, coefficient of variation (CV), corneal thickness and volume, maximum keratometry, and anterior chamber volume and depth (ACD) measurements were performed using a specular microscope and Pentacam HR. RESULTS The mean duration of uveitis was 24.6 ± 40.5 (0-180) months. The mean number of uveitis attacks was 2.8 ± 3.0 (1-20). Coefficient of variation was significantly higher in the active uveitis group compared with inactive uveitis group (p=0.017, Post Hoc Tukey). Anterior segment parameters other than coefficient of variation were not significantly different between active/inactive uveitis and control groups (p>0.05). Multiple linear regression analysis showed that coefficient of variation was greater in active uveitis compared with inactive uveitis after adjusting for the duration of uveitis, type of uveitis, having a rheumatologic disease, and having immunosuppressive treatment (p=0.003). The duration of uveitis and number of attacks were not significantly correlated with ocular parameters (p>0.05, Spearman's correlation). The difference in parameters was not significant based on uveitis type (p>0.05). CONCLUSIONS Coefficient of variation was higher in eyes with active uveitis than that in eyes with inactive uveitis, whereas corneal endothelial cell density and anterior chamber morphology did not significantly differ between active/inactive uveitis and control groups.
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Affiliation(s)
- Ebru Nevin Cetin
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Kerem Bozkurt
- Department of Ophthalmology, Denizli State Hospital, Denizli, Turkey
| | - Selen Akbulut
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Murat Taşcı
- Department of Rheumatology, Pamukkale University, Denizli, Turkey
| | - Veli Çobankara
- Department of Rheumatology, Pamukkale University, Denizli, Turkey
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Bahar A, Pekel G. The effects of pharmacological accommodation and cycloplegia on axial length and choroidal thickness. Arq Bras Oftalmol 2021; 84:107-112. [PMID: 33567004 DOI: 10.5935/0004-2749.20210015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/03/2020] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To investigate the effects of pharmacological accommodation and cycloplegia on ocular measurements. METHODS Thirty-three healthy subjects [mean (±SD) age, 32.97 (±5.21) years] volunteered to participate in the study. Measurement of the axial length, macular and choroidal thickness, refractive error, and corneal topography, as well as anterior segment imaging, were performed. After these procedures, pharmacological accommodation was induced by applying pilocarpine eye drops (pilocarpine hydrochloride 2%), and the measurements were repeated. The measurements were repeated again after full cycloplegia was induced using cyclopentolate eye drops (cyclopentolate hydrochloride 1%). The correlations between the measurements were evaluated. RESULTS A significant increase in subfoveal choroidal thickness after applying 2% pilocarpine was identified (without the drops, 319.36 ± 90.08 µm; with pilocarpine instillation, 341.60 ± 99.19 µm; with cyclopentolate instillation, 318.36 ± 103.0 µm; p<0.001). A significant increase in the axial length was also detected (without the drops, 23.26 ± 0.83 mm; with pilocarpine instillation, 23.29 ± 0.84 mm; with cyclopentolate instillation, 23.27 ± 0.84 mm; p=0.003). Comparing pharmacological accommodation and cycloplegia revealed a significant difference in central macular thickness (with pilocarpine instillation, 262.27 ± 19.34 µm; with cyclopentolate instillation, 265.93 ± 17.91 µm; p=0.016). Pilocarpine-related miosis (p<0.001) and myopic shift (p<0.001) were more severe in blue eyes vs. brown eyes. CONCLUSION Pharmacological accommodation may change ocular measurements, such as choroidal thickness and axial length. This condition should be considered when performing ocular measurements, such as intraocular lens power calculations.
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Affiliation(s)
- Alperen Bahar
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
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Pekel G, Firinci F, Acer S, Kasikçi S, Yagci R, Mete E, Çetin EN. Optical densitometric measurements of the cornea and lens in children with allergic rhinoconjunctivitis. Clin Exp Optom 2021; 99:51-5. [DOI: 10.1111/cxo.12322] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 03/29/2015] [Accepted: 04/16/2015] [Indexed: 11/28/2022] Open
Affiliation(s)
- Gökhan Pekel
- Pamukkale University, Ophthalmology Department, Denizli, Turkey,
| | - Fatih Firinci
- Pamukkale University, Pediatric Allergy and Immunology Department, Denizli, Turkey,
| | - Semra Acer
- Pamukkale University, Ophthalmology Department, Denizli, Turkey,
| | - Seher Kasikçi
- Pamukkale University, Ophthalmology Department, Denizli, Turkey,
| | - Ramazan Yagci
- Pamukkale University, Ophthalmology Department, Denizli, Turkey,
| | - Emin Mete
- Pamukkale University, Pediatric Allergy and Immunology Department, Denizli, Turkey,
| | - Ebru Nevin Çetin
- Pamukkale University, Ophthalmology Department, Denizli, Turkey,
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Pekel E, Altıncık SA, Pekel G. Inner retinal thickness and optic disc measurements in obese children and adolescents. Arq Bras Oftalmol 2020; 83:383-388. [PMID: 33084815 DOI: 10.5935/0004-2749.20200047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/06/2019] [Indexed: 11/20/2022] Open
Abstract
PURPOSE This study aimed to evaluate optic nerve head parameters and inner retinal layer thicknesses in obese children and adolescents. METHODS Forty-one eyes of 41 pediatric obese participants and 41 eyes of 41 age- and sex-matched healthy controls were included in this study. Body mass index was calculated, based on sex and age, using body weight and height measurements. Blood lipid values (i.e., cholesterol, low-density lipoprotein, high-density lipoprotein, and triglyceride) were measured in obese participants. Optical coherence tomography was used to examine optic nerve head parameters, including rim area, disc area, cup-to-disc ratio, and cup volume, as well as the thicknesses of retinal nerve fiber layers and macular ganglion cell-inner plexiform layers. RESULTS Optic disc parameters were similar in obese and healthy children (p>0.05). The percentage of binocular retinal nerve fiber layer thickness symmetry was significantly different between obese and control groups (p=0.003). Compared to the control group, participants in the obese group exhibited thinner retinal nerve fiber layers in the superior quadrants (p=0.04) and thinner ganglion cell-inner plexiform layers in the superior-temporal sectors (p=0.04). There were no statistically significant correlations between the ocular parameters and lipid blood test values assessed in this study (p>0.05). Body mass index was significantly negatively correlated with the mean retinal nerve fiber layer thickness (r=-0.33, p=0.03) in the obese group. There was no significant correlation between intraocular pressure and body mass index (r=0.05, p=0.74). CONCLUSION Compared to healthy children, obese children had greater binocular retinal nerve fiber layer thickness asymmetry and thinner retinal nerve fiber and ganglion cell-inner plexiform layers in several sectors. Blood lipid levels were not associated with retinal thickness or optic disc parameters in obese children.
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Affiliation(s)
- Evre Pekel
- Eye Clinic, Denizli State Hospital, Denizli, Turkey
| | | | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
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Kaya H, Pekel G, Kaya D, Kara CO, Hıraali MC. The Effects of Surgical Treatment on Retina-Choroidal Findings in Patients With Obstructive Sleep Apnea Syndrome. Ophthalmic Surg Lasers Imaging Retina 2020; 51:35-42. [PMID: 31935301 DOI: 10.3928/23258160-20191211-05] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 07/29/2019] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVE The purpose of this study was to determine the effect of surgical treatment on ocular findings in obstructive sleep apnea syndrome (OSAS). PATIENTS AND METHODS The authors studied 34 eyes of 34 newly diagnosed OSAS patients. The sleep study was performed before and 6 months after expansion sphincter pharyngoplasty (ESP). Retinal nerve fiber layer (RNFL), choroidal thickness (CT), and retinal arteriolar caliber (RAC) analyses were performed using spectral-domain optical coherence tomography. Intraocular pressure (IOP) and ocular pulse amplitude were performed using the Pascal dynamic contour tonometer. RESULTS The preoperative and postoperative Apnea Hypopnea Index scores and average oxygen saturation values were significantly different (P = .0001 and P = .001, respectively). There was no significant difference between the preoperative and postoperative RNFL thicknesses (P > .05). The preoperative subfoveal, nasal, temporal CT, and IOP were significantly different from the postoperative measurements (P = .006, P = .05, P = .036, and P = .0001, respectively). CONCLUSIONS ESP had a significant influence on CT and IOP in patients with OSAS, maintaining a decrease in CT and IOP 6 months after surgery. The determination of these ocular findings may be useful to show the positive effects of ESP. [Ophthalmic Surg Lasers Imaging Retina. 2020;51:35-42.].
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Abstract
BACKGROUND This study aimed to evaluate the scleral thickness and corneal parameters of patients with systemic lupus erythematosus (SLE). METHODS Forty-seven eyes of 47 SLE patients and 44 eyes of healthy controls were included in this cross-sectional study. Anterior segment optical coherence tomography (AS-OCT) was used to measure the corneal and scleral thickness. Scleral thickness (ST) was measured based upon the segmentation at 1000 to 5000 μm from the scleral spur. Pentacam HR was used to measure corneal parameters. RESULTS There was no statistically significant difference between SLE group and control group according to age and sex (P > .05). The ST measurements at all distances from scleral spur were found to be thicker in patients with SLE (P < .05). Central corneal thickness (CCT), cornea volume (CV), corneal densitometry (CD), and peripheral corneal thickness (PCT) measurements were similar between the groups (P > .05). CONCLUSION ST was thicker in SLE patients compared with healthy controls. AS-OCT seems helpful in selecting optimal sites for pharmaceutical or surgical intervention in SLE patients, since it shows thickness variations in anterior sclera.
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Affiliation(s)
| | - Uğur Karasu
- Rheumatology Department, Pamukkale University, Denizli, Turkey
| | | | - Murat Taşçi
- Rheumatology Department, Pamukkale University, Denizli, Turkey
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Pekel G, Taşçı M, Bahar A, Pekel E, Çetin EN, Martin Ç, Çobankara V. Evaluation of corneal layers and anterior sclera in patients with primary Sjögren's syndrome. Arq Bras Oftalmol 2019; 82:270-274. [PMID: 30970120 DOI: 10.5935/0004-2749.20190054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 11/22/2018] [Indexed: 11/20/2022] Open
Abstract
PURPOSE We aimed to compare the thickness of anterior sclera, corneal layers, and pre-ocular tear film between patients with primary Sjögren's syndrome and healthy individuals. METHODS Fifty-one patients with primary Sjögren's syndrome and 41 healthy control participants were recruited in this cross-sectional and comparative study. The thickness of the pre-ocular tear film, corneal epithelium, Bowman's layer, stroma, Descemet's membrane, and endothelium were measured on the corneal apex. Anterior scleral thickness was measured at distances of 1 mm and 3 mm from the limbus. The anterior segment module of spectral-domain optical coherence tomography was used to measure thicknesses of pre-ocular tear film, corneal layers, and anterior sclera. RESULTS Tear film thickness, Schirmer's test, and tear break up time values were significantly lower in the Sjögren's disease group than in the healthy controls (p<0.05). The thickness measurements of corneal layers and sclera were similar between the groups. Tear film thickness was moderately correlated with the Schirmer's test results (r=0.34, p=0.001), but there was no correlation between the Schirmer's test results and tear break up time (r=0.18, p=0.09). CONCLUSIONS Pre-ocular tear film, as measured by anterior segment optical coherence tomography, was thinner in patients with primary Sjögren's syndrome than in the healthy controls. The thicknesses of corneal layers and anterior sclera were similar between the groups.
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Affiliation(s)
- Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Murat Taşçı
- Rheumatology Division, Pamukkale University, Denizli, Turkey
| | - Alperen Bahar
- Eye Clinic, Yuksekova State Hospital, Hakkari, Turkey
| | - Evre Pekel
- Eye Clinic, Denizli State Hospital, Denizli, Turkey
| | | | - Çiğdem Martin
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Veli Çobankara
- Rheumatology Division, Pamukkale University, Denizli, Turkey
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Pekel G, Pekel E. Re: Vogel et al.: Foveal development in infants treated with bevacizumab or laser photocoagulation for retinopathy of prematurity (Ophthalmology. 2018;125:444-452). Ophthalmology 2018; 125:e56-e57. [PMID: 30032801 DOI: 10.1016/j.ophtha.2018.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 02/13/2018] [Accepted: 03/13/2018] [Indexed: 11/28/2022] Open
Affiliation(s)
- Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Ophthalmology Department, Denizli, Turkey.
| | - Evre Pekel
- Department of Ophthalmology, Pamukkale University, Ophthalmology Department, Denizli, Turkey
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Pekel G, Pekel E. The Relationship Between Nonsteroidal Anti-inflammatory Drug Use and Age-related Macular Degeneration. Am J Ophthalmol 2018; 189:176. [PMID: 29548554 DOI: 10.1016/j.ajo.2018.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 02/05/2018] [Indexed: 10/17/2022]
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Affiliation(s)
- Mehmet Çakir
- Beyoğlu Eye Training and Research Hospital, Istanbul - Turkey
| | - Osman Çekiç
- Beyoğlu Eye Training and Research Hospital, Istanbul - Turkey
| | - Gökhan Pekel
- Beyoğlu Eye Training and Research Hospital, Istanbul - Turkey
| | - Ömer F. Yilmaz
- Beyoğlu Eye Training and Research Hospital, Istanbul - Turkey
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Pekel G, Özbakış F, Bahar A, Pekel E, Çetin EN. Correlations of Corneal Optical Densitometry, Endothelial Hexagonality Percentage, and Epithelium Thickness. Curr Eye Res 2017; 43:170-174. [DOI: 10.1080/02713683.2017.1387271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Gökhan Pekel
- Pamukkale University, Ophthalmology Department, Denizli, Turkey
| | - Fatih Özbakış
- Pamukkale University, Ophthalmology Department, Denizli, Turkey
| | - Alperen Bahar
- Pamukkale University, Ophthalmology Department, Denizli, Turkey
| | - Evre Pekel
- Eye Clinic, Denizli State Hospital, Denizli, Turkey
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17
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Pekel E, Altıncık SA, Pekel G. Evaluation of optic disc, retinal nerve fiber and macular ganglion cell layers in pediatric diabetes. Int Ophthalmol 2017; 38:1955-1961. [PMID: 28780619 DOI: 10.1007/s10792-017-0683-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 08/01/2017] [Indexed: 01/05/2023]
Abstract
PURPOSE Our aim was to compare optic disc parameters, retinal nerve fiber (RNFL) and macular ganglion cell layers between children and adolescents with diabetes mellitus (type 1) and healthy controls. METHODS Sixty-three eyes of 63 pediatric diabetic patients without diabetic retinopathy and 44 eyes of 44 healthy controls were included in this cross-sectional and comparative study. Diabetic and control groups were similar in the aspect of age, gender and refractive error. Measurements of optic disc parameters (i.e., rim area, disc area, cup-to-disc ratio, cup volume), thickness of RNFL and macular ganglion cell-inner plexiform layers (GCL + IPL) were taken with the spectral domain optical coherence tomography. RESULTS There were not statistically significant differences between the diabetic patients and healthy controls in terms of intraocular pressure (p = 0.14), retinal nerve fiber layer thickness (p = 0.61), rim area (p = 0.92), disc area (p = 0.10), vertical cup-to-disc ratio (p = 0.16), cup volume (p = 0.13), and average macular GCL + IPL thickness (p = 0.43). On the other hand, binocular RNFL thickness symmetry percentage was statistically significantly different in the diabetic and control groups (p = 0.01). CONCLUSION Diabetic children and adolescents without diabetic retinopathy have more binocular RNFL thickness asymmetry compared to healthy controls.
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Affiliation(s)
- Evre Pekel
- Denizli State Hospital, Eye Clinic, Denizli, Turkey
| | | | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, 20070, Denizli, Turkey.
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Abstract
The purpose of this study was to compare the optic disc parameters, retinal nerve fiber (RNFL), and macular ganglion cell layers between patients with diabetes mellitus (DM) type 2 and healthy controls.In this cross-sectional study, 69 eyes of 69 diabetic patients without diabetic retinopathy and 47 eyes of 47 healthy controls were included. Optic disc parameters (i.e., rim area, disc area, cup to disc ratio, cup volume), RNFL, and macular ganglion cell-inner plexiform layers (GCL + IPL) thickness were measured by means of spectral domain optical coherence tomography.There were not statistically significant differences between the diabetic patients and healthy controls in terms of RNFL thickness (P = .32), rim area (P = .20), disc area (P = .16), cup volume (P = .12), and average macular GCL + IPL thickness (P = .11). Nevertheless, binocular RNFL thickness symmetry percentage (P =.03), average cup to disc ratio (P = .02), and superior-nasal macular GCL + IPL thickness (P = .04) were statistically significantly different in the diabetic and control groups.Diabetic patients without retinopathy have more binocular RNFL thickness asymmetry, higher cup to disc ratio, and thinner sectoral macular GCL + IPL when compared to healthy controls. Our results may support the statement that DM causes inner retinal neurodegenerative changes.
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Affiliation(s)
| | | | | | | | | | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
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19
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Acer S, Pekel G, Küçükatay V, Karabulut A, Yağcı R, Çetin EN, Akyer ŞP, Şahin B. Oxidative stress of crystalline lens in rat menopausal model. Arq Bras Oftalmol 2017; 79:222-5. [PMID: 27626144 DOI: 10.5935/0004-2749.20160064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 03/16/2016] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To evaluate lenticular oxidative stress in rat menopausal models. METHODS Forty Wistar female albino rats were included in this study. A total of thirty rats underwent oophorectomy to generate a menopausal model. Ten rats that did not undergo oophorectomy formed the control group (Group 1). From the rats that underwent oophorectomy, 10 formed the menopause control group (Group 2), 10 were administered a daily injection of methylprednisolone until the end of the study (Group 3), and the remaining 10 rats were administered intraperitoneal streptozocin to induce diabetes mellitus (Group 4). Total oxidant status (TOS), total antioxidant capacity (TAC), and oxidative stress index (OSI) measurements of the crystalline lenses were analyzed. RESULTS The mean OSI was the lowest in group 1 and highest in group 4. Nevertheless, the difference between the groups was not statistically significant in terms of OSI (p >0.05). The mean TOS values were similar between the groups (p >0.05), whereas the mean TAC of group 1 was significantly higher than that of the other groups (p <0.001). CONCLUSIONS Our results indicate that menopause may not promote cataract formation.
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Affiliation(s)
- Semra Acer
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Vural Küçükatay
- Department of Physiology, Pamukkale University, Denizli, Turkey
| | - Aysun Karabulut
- Department of Gynecology and Obstetrics, Pamukkale University, Denizli, Turkey
| | - Ramazan Yağcı
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Ebru Nevin Çetin
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | | | - Barbaros Şahin
- Experimental Animals Unit, Pamukkale University, Denizli, Turkey
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Abstract
PURPOSE To evaluate the efficacy and safety of silicone oil barrier sutures in aphakic eyes with iris defects. METHODS Sixteen aphakic and iris-defective eyes of 16 patients who underwent a pars plana vitrectomy procedure with silicone oil tamponade because of retinal detachment were included in this retrospective study. Silicone oil barrier sutures were placed as a grid pattern within the plane of the previous iris after vitrectomy and before silicone oil injection. RESULTS The mean follow-up time after silicone oil barrier suture operations was 12.0 ± 6.8 months. Silicone oil was present in the anterior chamber in five eyes (31%) at the last visit. These eyes also had hypotony, band keratopathy, and anterior proliferative vitreoretinopathy. CONCLUSION In this study, silicone oil barrier sutures were proven to be safe and effective in preventing silicone oil-corneal endothelium touch in aphakic eyes with iris defects, unless hypotony was present because of anterior proliferative vitreoretinopathy.
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Affiliation(s)
- Kemal Yüksel
- *Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey; and †Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Abstract
Background Our aim was to demonstrate the publication trends of corneal transplantation in the last decade. Methods All of the keratoplasty research articles, letters, case reports, reviews and meeting abstracts published between January 2006 and December 2015 indexed on the Thomson Reuters Web of Knowledge were evaluated. A bibliometric filter was used to capture keratoplasty related publications by using the key words ‘keratoplasty’, ‘corneal transplantation’ or ‘keratoprosthesis’ in the ‘title’ selection mode. Results A total of 2726 publications were evaluated in the present study. Documents related to penetrating keratoplasty only have been decreased, whereas the documents related to endothelial keratoplasty were increased in the last decade. The total keratoplasty publication counts had been increased from the year 2006 to 2015. The average citation count per keratoplasty documents was 9.34. Conclusions There is a growing interest to the lamellar keratoplasty techniques especially the endothelial keratoplasty in the last decade.
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Affiliation(s)
- Evre Pekel
- Denizli State Hospital, Eye Clinic, Denizli, Turkey
| | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, 20070, Turkey.
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Pekel G, Pekel E. Effect of an intact posterior capsule on visual function after cataract surgery. J Cataract Refract Surg 2016; 42:1391-1392. [PMID: 27697269 DOI: 10.1016/j.jcrs.2016.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/03/2016] [Indexed: 11/28/2022]
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Acer S, Balcı YI, Pekel G, Ongun TT, Polat A, Çetin EN, Yağcı R. Retinal nerve fiber layer thickness and retinal vessel calibers in children with thalassemia minor. SAGE Open Med 2016; 4:2050312116661683. [PMID: 27540484 PMCID: PMC4973478 DOI: 10.1177/2050312116661683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 07/01/2016] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES Evaluation of the peripapillary retinal nerve fiber layer thickness, subfoveal choroidal thickness, and retinal vessel caliber measurements in children with thalassemia minor. METHODS In this cross-sectional and comparative study, 30 thalassemia minor patients and 36 controls were included. Heidelberg spectral domain optical coherence tomography was used for peripapillary retinal nerve fiber layer thickness, subfoveal choroidal thickness, and retinal vessel caliber measurements. RESULTS There was no statistically significant difference in retinal nerve fiber layer thickness and subfoveal choroidal thickness between the two groups (p > 0.05). There was no correlation between retinal nerve fiber layer thickness and hemoglobin values. Both the arterioral and venular calibers were higher in thalassemia minor group (p < 0.05). CONCLUSION There is increased retinal arterioral and venular calibers in children with thalassemia minor compared with controls.
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Affiliation(s)
- Semra Acer
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Yasemin I Balcı
- Department of Pediatric Hematology and Thalassemia Center, Pamukkale University, Denizli, Turkey
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Tuğba T Ongun
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Aziz Polat
- Department of Pediatric Hematology and Thalassemia Center, Pamukkale University, Denizli, Turkey
| | - Ebru N Çetin
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Ramazan Yağcı
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Acer S, Pekel G, Çetin EN, Yağcı R, Yıldırım C, Ağladıoğlu SY, Özhan B. Reply. J AAPOS 2016; 20:379-80. [PMID: 27457501 DOI: 10.1016/j.jaapos.2016.07.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 07/17/2016] [Indexed: 11/25/2022]
Affiliation(s)
- Semra Acer
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Ebru Nevin Çetin
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Ramazan Yağcı
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Cem Yıldırım
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | | | - Bayram Özhan
- Department of Pediatric Endrocrinology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
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Pekel E, Pekel G. Clinical Characteristics of Dry Eye Patients With Chronic Pain Syndromes. Am J Ophthalmol 2016; 166:203. [PMID: 27103576 DOI: 10.1016/j.ajo.2016.03.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/12/2016] [Accepted: 03/14/2016] [Indexed: 11/30/2022]
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Alagöz C, Pekel G, Alagöz N, Sayın N, Yüksel K, Yıldırım Y, Yazıcı AT. Choroidal Thickness, Photoreceptor Thickness, and Retinal Vascular Caliber Alterations in Dark Adaptation. Curr Eye Res 2016; 41:1608-1613. [PMID: 27159535 DOI: 10.3109/02713683.2015.1135961] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE Our aim was to evaluate the alterations of subfoveal choroidal thickness (SFCT), photoreceptor layer thickness (PRT), and retinal vessel diameter in the dark and light adaptation. METHODS Twenty-four eyes of 24 healthy volunteers (12 males, 12 females) were included in this cross-sectional and observational study. The SFCT, PRT, retinal arteriole, and venule caliber measurements were performed with spectral domain optical coherence tomography in the dark (0.0 cd/m2) and under light (80 cd/m2) adapted conditions. RESULTS The mean age of the participants was 30.4 ± 4.4 years (range: 22-42). The SFCT increased statistically significantly in dark adaptation (p < 0.001), then returned to baseline values following light adaptation. The PRT, retinal arteriole, and venule caliber measurements were similar in the dark and light (p > 0.05). CONCLUSIONS While SFCT increased, PRT, and retinal vessel diameter did not change following transition from light to dark.
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Affiliation(s)
- Cengiz Alagöz
- a Beyoglu Eye Training and Research Hospital, Eye Clinic , Istanbul , Turkey
| | - Gökhan Pekel
- b Pamukkale University , Ophthalmology Department , Denizli , Turkey
| | - Neşe Alagöz
- a Beyoglu Eye Training and Research Hospital, Eye Clinic , Istanbul , Turkey
| | - Nihat Sayın
- c Kanuni Sultan Suleyman Training and Research Hospital, Eye Clinic , Istanbul , Turkey
| | - Kemal Yüksel
- a Beyoglu Eye Training and Research Hospital, Eye Clinic , Istanbul , Turkey
| | - Yusuf Yıldırım
- a Beyoglu Eye Training and Research Hospital, Eye Clinic , Istanbul , Turkey
| | - Ahmet Taylan Yazıcı
- a Beyoglu Eye Training and Research Hospital, Eye Clinic , Istanbul , Turkey
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Affiliation(s)
- Evre Pekel
- Denizli State Hospital Eye Clinic, Denizli, Turkey; and the
| | - Gökhan Pekel
- Pamukkale University, Ophthalmology Department, Denizli, Turkey
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Pekel G, Doğu MH, Sarı HI, Acer S, Kasikci A, Yagci R, Çetin EN. Retinal Vessel Caliber, Choroidal Thickness and Ocular Pulse Amplitude Measurements in Essential Thrombocythemia. Middle East Afr J Ophthalmol 2016; 23:84-8. [PMID: 26957845 PMCID: PMC4759910 DOI: 10.4103/0974-9233.171827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
PURPOSE The choroid and retina receive most of the blood that enter to the eye, and this uptake may be affected by essential thrombocythemia (ET) in which thrombosis and hemorrhage is common. This study compares choroidal thickness, retinal vascular caliber, and ocular pulse amplitude (OPA) measurements between patients with ET and healthy adults. MATERIALS AND METHODS Thirty-seven patients with ET and 37 age-sex-matched healthy adults were recruited in this cross-sectional and comparative study. Spectral-domain optical coherence tomography was used to measure the subfoveal choroidal thickness (SFCT) and retinal vascular caliber measurements. The Pascal dynamic contour tonometer was used for OPA and intraocular pressure (IOP) measurements. The independent samples t-test was used for comparison of measurements between the groups. Pearson's correlation coefficient analysis was used to detect correlations between the variables. A P < 0.05 was statistically significant. RESULTS SFCT, OPA, and IOP measurements were not statistically significant differences between the study group and the control group (P > 0.05, all comparisons). Blood platelet counts were not associated with choroidal thickness, OPA, and IOP (P > 0.05). Retinal arteriolar and venular calibers were statistically, significantly thicker in healthy controls when compared to the study group (P < 0.05). CONCLUSIONS Our results indicate that choroidal thickness and pulsatile blood flow are not significantly affected in ET and under high blood platelet counts. Retinal arteriolar and venular calibers are thinner in ET when compared to age-sex matched healthy controls.
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Affiliation(s)
- Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | | | | | - Semra Acer
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Alper Kasikci
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Ramazan Yagci
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Ebru Nevin Çetin
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Agladioglu K, Pekel G, Yagci R, Citisli V. Reply: Choroidal thickness shows diurnal variation. J Clin Ultrasound 2016; 44:169. [PMID: 26875594 DOI: 10.1002/jcu.22342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 01/15/2016] [Indexed: 06/05/2023]
Affiliation(s)
| | - Gökhan Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Ramazan Yagci
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Veli Citisli
- Neurosurgery Department, Pamukkale University, Denizli, Turkey
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Agladioglu K, Pekel G, Altintas Kasikci S, Yagci R, Kiroglu Y. An evaluation of ocular elasticity using real-time ultrasound elastography in primary open-angle glaucoma. Br J Radiol 2016; 89:20150429. [PMID: 26838949 DOI: 10.1259/bjr.20150429] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE The aim of this study was to compare sonoelastographic findings in the retina-choroid-sclera (RCS) complex and vitreous in glaucomatous and healthy eyes. METHODS For this cross-sectional comparative study, 20 patients with primary open-angle glaucoma and 20 healthy volunteers were recruited. Ultrasound elastography measurements were taken with a sonographic scanner of the RCS complex, anterior vitreous (AV), posterior vitreous (PV), retrobulbar fat tissue (RFT), optic disc (OD) and optic nerve (ON) in each eye. RESULTS The elasticity index of the RCS complex, RFT, OD, ON, AV and PV was similar in both groups (p > 0.05), although the AV/PV strain ratio in the group of patients with glaucoma was significantly higher (p = 0.04). CONCLUSION Glaucoma increases the AV/PV strain ratio. In providing reproducible and consistent values, the real-time elastography (RTE) technique may be helpful in elucidating the mechanisms of glaucoma in some aspects. ADVANCES IN KNOWLEDGE This study can help to evaluate the elasticity of the RCS complex and vitreous in glaucomatous eyes with RTE.
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Affiliation(s)
- Kadir Agladioglu
- 1 Pamukkale University, Medical School, Department of Radiology, Denizli, Turkey
| | - Gökhan Pekel
- 2 Pamukkale University, Medical School, Department of Ophtalmology, Denizli, Turkey
| | | | - Ramazan Yagci
- 2 Pamukkale University, Medical School, Department of Ophtalmology, Denizli, Turkey
| | - Yilmaz Kiroglu
- 1 Pamukkale University, Medical School, Department of Radiology, Denizli, Turkey
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Acer S, Ağladıoğlu SY, Pekel G, Özhan B, Çetin EN, Yağcı R, Yıldırım C. Density of the crystalline lens in obese and nonobese children. J AAPOS 2016; 20:54-7. [PMID: 26917073 DOI: 10.1016/j.jaapos.2015.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 09/29/2015] [Accepted: 10/04/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE To compare crystalline lens density in obese and nonobese children. METHODS A total of 40 obese (25 females) and 46 age-sex matched controls (26 females) were included in this prospective study. Children with ocular diseases (except for mild refractive errors), ocular trauma, or surgery and any systemic disorders, including diabetes, were excluded. Lens densitometry (LD), central corneal thickness (CCT), anterior chamber depth (ACD) and corneal volume (CV) were measured by Pentacam HR. RESULTS Mean participant age was 12.0 ± 1.9 (range, 7.2-18 years) in the obese group and 11.7 ± 2.0 (range, 7.5-16.1 years) in the control group. The BMI was 29.9 ± 4.5 in the obese group and 18.7 ± 2.5 in the control group (P ≤ 0.05). The vertical, horizontal, and areal lens density measurements were higher in obese group than in controls (P ≤ 0.05). There was a positive correlation between BMI and vertical, horizontal, and areal lens density measurements. The difference in CCT, ACD, and CV was not statistically significant between groups (P ≥ 0.05). CONCLUSIONS There is increased lens density in the obese children compared with controls. Pentacam HR may provide objective data about lens density in children.
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Affiliation(s)
- Semra Acer
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey.
| | | | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Bayram Özhan
- Department of Pediatric Endocrinology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Ebru Nevin Çetin
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Ramazan Yağcı
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
| | - Cem Yıldırım
- Department of Ophthalmology, Pamukkale University, Kinikli Kampusu, Denizli, Turkey
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Pekel G, Acer S, Cesur N, Yağcı R, Çetin EN. Late Postoperative Evaluation of Retinal and Choroidal Thickness and Retinal Vessel Caliber after Surgical Repair of Corneal Perforation. Turk J Ophthalmol 2015; 45:239-242. [PMID: 27800241 PMCID: PMC5082261 DOI: 10.4274/tjo.57338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Accepted: 02/10/2015] [Indexed: 12/01/2022] Open
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Agladioglu K, Pekel G, Citisli V, Yagci R. Choroidal thickness and retinal vascular caliber correlations with internal carotid artery Doppler variables. J Clin Ultrasound 2015; 43:567-572. [PMID: 25802013 DOI: 10.1002/jcu.22269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/20/2015] [Indexed: 06/04/2023]
Abstract
PURPOSE Decreased retinal arteriolar caliber and increased retinal venular caliber have been associated with increased cardiovascular mortality. This study aimed to evaluate correlations of choroidal thickness and retinal vascular caliber measurements with internal carotid artery (ICA) Doppler ultrasound variables. METHODS In this cross-sectional and observational study, 43 eyes and ICAs of 43 healthy volunteers were examined. Spectral domain optical coherence tomography was used to measure subfoveal choroidal thickness (SFCT) and retinal vascular caliber. The ICA Doppler ultrasonographic parameters were diameter, flow volume, peak-systolic velocity, end-diastolic velocity, resistance index (RI), and pulsatility index (PI). RESULTS Negative correlations emerged between ICA RI and SFCT (p = 0.017, r = -0.36) as well as between ICA PI and retinal arteriolar caliber (p = 0.015, r = -0.37). A negative linear correlation appeared between ICA diameter and SFCT (p = 0.005, r = -0.42), although ICA diameter and flow volume showed no association with retinal vessel caliber (p > 0.05). CONCLUSIONS Choroidal thickness is negatively correlated with ICA diameter and ICA RI, while retinal arteriolar caliber is inversely related with ICA PI in normal volunteers.
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Affiliation(s)
| | - Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
| | - Veli Citisli
- Department of Neurosurgery, Pamukkale University, Denizli, Turkey
| | - Ramazan Yagci
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Pekel G, Acer S, Yağcı R, Kaya H, Özbakış F, Bahar A, Çetin EN. Posterior pole asymmetry analysis and retinal thickness measurements in young relatives of glaucoma patients. Kaohsiung J Med Sci 2015; 31:420-5. [DOI: 10.1016/j.kjms.2015.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 05/01/2015] [Accepted: 05/27/2015] [Indexed: 10/23/2022] Open
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Yüksel K, Karaküçük Y, Özkaya A, Pekel G, Baz Ö, Alagöz C, Yazıcı AT. Comparison of photoreceptor outer segment length in diabetic and idiopathic epiretinal membranes. Eye (Lond) 2015; 29:1446-52. [PMID: 26183287 DOI: 10.1038/eye.2015.133] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 06/10/2015] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Idiopathic and diabetic epiretinal membranes (ERMs) differ significantly in terms of macular morphology. Our aim was to compare the photoreceptor outer segment (PROS) length in diabetic and idiopathic ERMs before and after surgery. METHODS Fifty-two eyes of 50 patients who underwent pars plana vitrectomy (PPV) due to idiopathic and diabetic ERMs were included in this retrospective case series. All of the patients underwent ERM and internal limiting membrane (ILM) removal. The patients had been followed up 6 months postoperatively. Spectral-domain optical coherence tomography (OCT) was used to measure the PROS length, overall PR length and central foveal thickness (CFT). RESULTS The PROS length, overall PR length, and CFT were statistically significantly lower at all the postoperative visits when compared to preoperative values in both the idiopathic and diabetic ERM groups (P<0.001). The amount of decrease in PROS and overall PR length were similar in both groups after surgery (P>0.05). There was no relation between amount of PROS length change and visual acuity gain in both groups (P>0.05). CONCLUSIONS Postoperative change of PROS length was similar in idiopathic and diabetic ERMs. PROS length change may not be an indicator of postoperative visual acuity.
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Affiliation(s)
- K Yüksel
- Ophthalmology Department, Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey
| | - Y Karaküçük
- Besni State Hospital, Eye Clinic, Adıyaman, Turkey
| | - A Özkaya
- Ophthalmology Department, Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey
| | - G Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - Ö Baz
- Ophthalmology Department, Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey
| | - C Alagöz
- Ophthalmology Department, Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey
| | - A T Yazıcı
- Ophthalmology Department, Beyoglu Eye Training and Research Hospital, Eye Clinic, Istanbul, Turkey
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Pekel G, Doğu MH, Keskin A, Acer S, Yağcı R, Kaşıkçı A, Çetin EN. Subfoveal Choroidal Thickness Is Associated with Blood Hematocrit Level. Ophthalmologica 2015; 234:55-9. [PMID: 26138561 DOI: 10.1159/000433449] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 05/18/2015] [Indexed: 11/19/2022]
Abstract
PURPOSE To compare subfoveal choroidal thickness (SFCT), retinal vessel caliber, and ocular pulse amplitude between treated polycythemia vera (PV) patients and healthy adults. METHODS Forty patients with PV and 40 age- and sex-matched healthy controls were recruited for this cross-sectional study. Spectral-domain optical coherence tomography was used for SFCT and retinal vessel caliber measurements. The Pascal dynamic contour tonometer was used for ocular pulse amplitude measurements. The correlations of blood hematocrit levels with the studied ocular parameters were analyzed. RESULTS There were no statistically significant differences between the PV patients and controls in SFCT, retinal vessel caliber, and ocular pulse amplitude (p > 0.05). SFCT was associated with hematocrit level in both PV patients and healthy adults (p < 0.05). CONCLUSIONS Although SFCT, retinal vessel caliber, and ocular pulse amplitude parameters are similar in treated PV patients and healthy controls, SFCT is associated with hematocrit level.
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Affiliation(s)
- Gökhan Pekel
- Department of Ophthalmology, Pamukkale University, Denizli, Turkey
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Akar S, Gokyigit B, Pekel G, Demircan A, Demirok A. Reply: Vertical rectus transposition in Duane's syndrome: does co-contraction worsen? Eye (Lond) 2015; 29:839-40. [PMID: 25657042 DOI: 10.1038/eye.2014.310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- S Akar
- Department of Ophthalmology, Faculty of Medicine, Baskent University, Istanbul, Turkey
| | - B Gokyigit
- Pediatric Ophthalmology and Strabismus Department, Professor Dr N Reşat Belger Beyoglu Education and Research Eye Hospital, Istanbul, Turkey
| | - G Pekel
- Department of Ophthalmology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - A Demircan
- Pediatric Ophthalmology and Strabismus Department, Professor Dr N Reşat Belger Beyoglu Education and Research Eye Hospital, Istanbul, Turkey
| | - A Demirok
- Pediatric Ophthalmology and Strabismus Department, Professor Dr N Reşat Belger Beyoglu Education and Research Eye Hospital, Istanbul, Turkey
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Kaya H, Pekel G, Pekel E. Is increased choroidal thickness associated with primary angle closure? Acta Ophthalmol 2015; 93:e82. [PMID: 25123021 DOI: 10.1111/aos.12528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hüseyin Kaya
- Ophthalmology Department; Pamukkale University; Denizli Turkey
| | - Gökhan Pekel
- Ophthalmology Department; Pamukkale University; Denizli Turkey
| | - Evre Pekel
- Eye Clinic; Denizli State Hospital; Denizli Turkey
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Pekel G, Acer S, Özbakis F, Yagci R, Sayin N. Macular asymmetry analysis in sighting ocular dominance. Kaohsiung J Med Sci 2014; 30:531-6. [DOI: 10.1016/j.kjms.2014.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/24/2014] [Accepted: 07/07/2014] [Indexed: 11/16/2022] Open
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Pekel G, Kılıç ID, Alihanoğlu Yİ, Acer S, Yağcı R, Kaya H, Alur İ. Effects of coronary artery bypass grafting surgery on retinal vascular caliber, ocular pulse amplitude and retinal thickness measurements. Perfusion 2014; 30:312-7. [DOI: 10.1177/0267659114547249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aim: The retina and ocular vasculature are vulnerable to alterations in systemic hemodynamics, such as in open heart surgeries. Our aim was to investigate retinal vascular caliber (RVC), ocular pulse amplitude (OPA), peripapillary retinal nerve fiber layer (RNFL) and macular thickness in coronary artery bypass grafting (CABG) surgery patients. Methods: Twenty-six patients who had a history of CABG surgery and 26 age-sex-matched healthy participants were recruited for this prospective, cross-sectional and comparative study. The RVC, peripapillary RNFL and macular thickness measurements were taken with spectral-domain optical coherence tomography. The OPA, a surrogate of pulsatile ocular blood flow, was measured with the Pascal dynamic contour tonometer. Results: There were no statistically significant differences between the CABG surgery patients and the controls with regard to RVC, OPA, peripapillary RNFL thickness and macular thickness measurements (p>0.05). Conclusions: CABG surgery does not affect retinal structures and pulsatile ocular blood flow in the long-term follow-up.
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Affiliation(s)
- G Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - ID Kılıç
- Cardiology Department, Pamukkale University, Denizli, Turkey
| | - Yİ Alihanoğlu
- Cardiology Department, Pamukkale University, Denizli, Turkey
| | - S Acer
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - R Yağcı
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - H Kaya
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - İ Alur
- Cardiovascular Surgery Department, Pamukkale University, Denizli, Turkey
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Pekel G, Yağcı R, Acer S, Özdemir S, Sayin N. Evaluation of the impact of Nd:YAG laser posterior capsulotomy on ocular pulse amplitude and anterior segment morphology. Lasers Surg Med 2014; 46:553-7. [DOI: 10.1002/lsm.22273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Gökhan Pekel
- Ophthalmology Department; Pamukkale University; Denizli Turkey
| | - Ramazan Yağcı
- Ophthalmology Department; Pamukkale University; Denizli Turkey
| | - Semra Acer
- Ophthalmology Department; Pamukkale University; Denizli Turkey
| | | | - Nihat Sayin
- Eye Clinic; Kanuni Sultan Suleyman Research & Training Hospital; Istanbul Turkey
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Pekel G, Ağladıoğlu K, Acer S, Yağcı R, Kaşıkçı A. Evaluation of Ocular and Periocular Elasticity after Panretinal Photocoagulation: An Ultrasonic Elastography Study. Curr Eye Res 2014; 40:332-7. [DOI: 10.3109/02713683.2014.918151] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Pekel G, Yagci R, Acer S, Cetin EN, Cevik A, Kasikci A. Effect of intracameral carbachol in phacoemulsification surgery on macular morphology and retinal vessel caliber. Cutan Ocul Toxicol 2014; 34:42-5. [PMID: 24754406 DOI: 10.3109/15569527.2014.903572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To investigate the effects of intracameral carbachol in phacoemulsification surgery on central macular thickness (CMT), total macular volume (TMV) and retinal vessel caliber (RVC). MATERIALS AND METHODS In this prospective consecutive case series, 82 patients underwent uneventful phacoemulsification and in-the-bag intraocular lens implantation. Unlike patients in the control group (43 eyes), patients in the study group (42 eyes) were injected with intracameral 0.01% carbachol during surgery. Spectral-domain optical coherence tomography (OCT) was used to analyze the parameters of CMT, TMV and RVC. RESULTS On the first postoperative day, mean CMT and TMV decreased markedly in the carbachol group, though these values did not change significantly in the control group. During follow-up visits, no statistically significant differences between the groups occurred regarding changes in mean CMT (p = 0.25, first day; p = 0.80, first week; p = 0.95, first month). However, change in mean TMV between groups on the first postoperative day was statistically significant (p = 0.01, first day; p = 0.96, first week; p = 0.68, first month). RVC values were similar on the preoperative and postoperative first days in both groups (p > 0.05). DISCUSSION Results suggest that the effect of intracameral carbachol on macular OCT is related to pharmacological effects, as well as optic events (e.g. miosis). CONCLUSION Intracameral carbachol given during cataract surgery decreases macular thickness and volume in the early postoperative period but does not exert any gross effect on RVC.
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Affiliation(s)
- Gökhan Pekel
- Department of Ophthalmology, Pamukkale University , Camlaralti Mahallesi, Denizli , Turkey and
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Abstract
AIM Choroid, which is the vascular tissue responsible for blood supply to the outer parts of the retina, might be affected by hemodynamic events. We aimed to reveal choroidal thickness and ocular pulse amplitude changes after cardiopulmonary bypass in which gross hemodynamic alterations occur. METHODS Forty-two eyes of 42 patients who underwent heart surgery with cardiopulmonary bypass were examined in this prospective, cross-sectional case series. The spectral domain optical coherence tomography (Spectralis, Heidelberg, Germany) was used to analyze sub-foveal choroidal thickness. The ocular pulse amplitude, the surrogate of gross choroidal blood flow, was measured with the Pascal dynamic contour tonometer (Pascal DCT, Swiss Microtechnology AG, Port, Switzerland).. The intraocular pressure was also measured with this tonometer. The examinations were performed pre-operatively and post-operatively at the first week and first month. RESULTS The mean age of the patients was 58.8 ± 12.4 years. The mean sub-foveal choroidal thickness and ocular pulse amplitude values did not change statistically significantly after the operations at the follow-up visits (p>0.05). Also, there were no important correlations between cardiopulmonary bypass time and mean sub-foveal choroidal thickness and ocular pulse amplitude changes at the post-operative first week (p>0.05). The intraocular pressure values were decreased markedly at the control visits (p<0.05). CONCLUSIONS Sub-foveal choroidal thickness and ocular pulse amplitude are unchanged, while intraocular pressure decreases one week and one month after cardiopulmonary bypass.
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Affiliation(s)
- G Pekel
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - I Alur
- Cardiovascular Surgery Department, Pamukkale University, Denizli, Turkey
| | - Y I Alihanoglu
- Cardiology Department, Pamukkale University, Denizli, Turkey
| | - R Yagci
- Ophthalmology Department, Pamukkale University, Denizli, Turkey
| | - B Emrecan
- Cardiovascular Surgery Department, Pamukkale University, Denizli, Turkey
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Sayin N, Kara N, Pekel G, Altinkaynak H. Effects of chronic smoking on central corneal thickness, endothelial cell, and dry eye parameters. Cutan Ocul Toxicol 2013; 33:201-5. [DOI: 10.3109/15569527.2013.832688] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yazıcı AT, Pekel G, Bozkurt E, Yıldırım Y, Pekel E, Demirok A, Yılmaz OF. Measurements of anterior segment parameters using three different non-contact optical devices in keratoconus patients. Int J Ophthalmol 2013; 6:521-5. [PMID: 23991390 DOI: 10.3980/j.issn.2222-3959.2013.04.21] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 06/18/2013] [Indexed: 11/02/2022] Open
Abstract
AIM To evaluate the measurements of anterior segment parameters using three different non-contact optical devices in keratoconus patients. METHODS A hundred and one eyes of 55 keratoconus patients were enrolled in this study. The mean age was 26.2±8.9 years. The inclusion criteria were keratoconus stage I to III according to the Amsler-Krumeich keratoconus classification. All the measurements were done by the same operator, under the mesopic light condition and repeated with three different optical methods; Visante, Orbscan and Pentacam. The evaluated anterior segment parameters were anterior chamber depth (ACD), central and thinnest corneal thickness (CCT and TCT) and pupil diameter (PD). RESULTS THE MEAN CCT MEASURED BY VISANTE, ORBSCAN AND PENTACAM WERE AS FOLLOWS: 462.0±48.1µm, 463.9±60.9µm, 476.5±45.3µm, respectively (P=0.873). The mean ACD values were 3.34±0.33mm, 3.26±0.33mm, 3.49±0.40mm, respectively (P=0.118). The mean PD measurements were 5.11±1.14mm, 4.80±0.85mm, 3.80±1.38mm, respectively (P<0.001). The mean TCT measurements of Visante, Orbscan and Pentacam were 437.9±48.2µm, 447.6±60.6µm and 459.9±44.0µm, respectively (P=0.214). The Visante and Orbscan measured CCT similarly, while Pentacam measured CCT thicker than the other two. The Visante measured TCT thinner than the other two devices. In ACD measurements, Orbscan was the one giving the lowest values. PD was measured differently by the devices. CONCLUSION Although TCT, CCT and ACD measurements acquired by Visante, Orbscan and Pentacam in keratoconus patients are similar, PD measurements show large differences among the devices.
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Akar S, Gokyigit B, Pekel G, Demircan A, Demirok A. Vertical muscle transposition augmented with lateral fixation (Foster) suture for Duane syndrome and sixth nerve palsy. Eye (Lond) 2013; 27:1188-95. [PMID: 23907625 DOI: 10.1038/eye.2013.167] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 07/04/2013] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To report the postoperative results of full-tendon vertical rectus transposition (VRT) augmented with lateral fixation suture for the treatment of type 1 Duane syndrome and sixth nerve palsy and to determine whether there was a decrease in the effect of the Foster suture over time. METHODS This retrospective, consecutive case series included patients who underwent a full-tendon VRT transposition with lateral fixation for type 1 Duane syndrome or sixth nerve palsy. The primary outcome measures included deviation, abnormal head posture(AHP), abduction deficiency, and postoperative binocular single visual field (BSVF). RESULTS Eighty-seven patients (87 eyes: 40 eyes with Duane syndrome and 47 eyes with sixth nerve palsy) were included in this study. In Duane syndrome patients, the deviation was reduced by a mean of 95%, the AHP was eliminated in 86% of patients, the abduction was improved by 42%, and a useful BSVF of ≈ 67% of normal was achieved at 1 year post operation. In sixth nerve palsy patients, the deviation was reduced by 99%, the abduction was improved by 59%, and a useful BSVF of ≈ 71% of normal was achieved at 1 year post operation. In both groups, the improvements in deviation angle and abduction were stable postoperatively. Sixteen patients needed reoperation for undercorrection. CONCLUSION VRT surgery with posterior fixation is an effective treatment method for complete sixth nerve palsy and Duane syndrome with esotropia, AHP, and abduction deficiency. The procedure carries a small risk of reoperation for undercorrection. The effect of the Foster suture did not decline over time.
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Affiliation(s)
- S Akar
- Pediatric Ophthalmology and Strabismus Department, Professor Dr N. Reşat Belger Beyoglu Education and Research Eye Hospital, Istanbul, Turkey
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Pekel G, Cetin EN, Acer S, Yagci R, Altintas S, Ongun GT. Effect of chronic smoking on lens nucleus as assessed by Pentacam HR lens densitometry in young adults. Cutan Ocul Toxicol 2013; 33:145-9. [DOI: 10.3109/15569527.2013.814137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yılmaz OF, Alagöz N, Pekel G, Azman E, Aksoy EF, Cakır H, Bozkurt E, Demirok A. Intracorneal inlay to correct presbyopia: Long-term results. J Cataract Refract Surg 2011; 37:1275-81. [PMID: 21570249 DOI: 10.1016/j.jcrs.2011.01.027] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 12/26/2010] [Accepted: 01/10/2011] [Indexed: 11/19/2022]
Affiliation(s)
- Omer F Yılmaz
- Beyoğlu Eye Training and Research Hospital, İstanbul, Turkey.
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Bozkurt E, Yazıcı AT, Pekel G, Albayrak S, Çakır M, Pekel E, Yilmaz ÖF. Effect of intracameral epinephrine use on macular thickness after uneventful phacoemulsification. J Cataract Refract Surg 2010; 36:1380-4. [DOI: 10.1016/j.jcrs.2010.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2009] [Revised: 02/12/2010] [Accepted: 02/20/2010] [Indexed: 11/29/2022]
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