1
|
Biomechanical properties of the cornea in Floppy eyelid syndrome. КЛИНИЧЕСКАЯ ПРАКТИКА 2022. [DOI: 10.17816/clinpract80086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background: Floppy eyelid syndrome (FES) is a frequently underdiagnosed disorder of unknown pathogenesis. FES has been associated with ocular conditions such as keratoconus. At present, despite the frequent combination of FES and keratoconus, there are almost no data on the biomechanical properties of the cornea in these patients. Aims: to determine the corneas biomechanical properties in patients with floppy eyelid syndrome. Methods: The study included 40 patients (54 eyes) with hyper-extensible eyelid syndrome. The average age was 53.96.7 years. The central corneal thickness averaged 55125 m. All the patients underwent a standard ophthalmological examination, including pneumotonometry. The intraocular pressure (IOP) and biomechanical properties of the cornea were measured using dynamic bidirectional applanation. Results: The study of the corneas biomechanical properties in patients with floppy eyelid syndrome showed a decrease in the corneal hysteresis (CH) indices to 9.960.61 mm Hg on the average, in the corneal resistance factor (CRF) to 9.540.64 mm Hg. Moreover, their value varied depending on the severity of the syndrome. The mean value of the corneal compensated IOP (IOPcc) in the entire sample was 15.51.0 mm Hg, Goldman IOP (IOPg) 15.12.0 mm Hg, pneumotonometric IOP 11.612.9 mm Hg. Regardless of the severity, the pneumotonometric IOP indices did not have statistically significant differences, while as this syndrome progressed, the IOPcc and IOPg indices showed a steady decrease in the mean values. Conclusions: It was found that, in floppy eyelid syndrome, the biomechanical parameters of the cornea were reduced. At the same time, the value of these indicators varied significantly with the severity. The largest and the smallest decrease were observed in the corneal hysteresis index and the corneal-compensated IOP, respectively.
Collapse
|
2
|
Lee SSY, Nilagiri VK, Mackey DA. Sleep and eye disease: A review. Clin Exp Ophthalmol 2022; 50:334-344. [PMID: 35263016 PMCID: PMC9544516 DOI: 10.1111/ceo.14071] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/02/2022] [Accepted: 03/06/2022] [Indexed: 12/21/2022]
Abstract
There is a growing body of literature on the effects of sleep disorders, in particular obstructive sleep apnoea (OSA), on ocular health, with consistent evidence of an increased risk of floppy eyelid syndrome, non-arteritic anterior ischaemic optic neuropathy, diabetic macular oedema, and other retinal vasculature changes in individuals with OSA. However, reports on OSA's associations with glaucoma, papilloedema, diabetic retinopathy, central serous chorioretinopathy, and keratoconus have been conflicting, while links between OSA and age-related macular degeneration have only been described fairly recently. Despite numerous suggestions that OSA treatment may reduce risk of these eye diseases, well-designed studies to support these claims are lacking. In particular, the ocular hypertensive effects of continuous positive airway pressure (CPAP) therapy for OSA requires further investigation into its potential impact on glaucoma risk and management. Reports of ocular surface complications secondary to leaking CPAP masks highlights the importance of ensuring good mask fit. Poor sleep habits have also been linked with increased myopia risk; however, the evidence on this association remains weak.
Collapse
Affiliation(s)
- Samantha S Y Lee
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
| | - Vinay K Nilagiri
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia
| | - David A Mackey
- Centre for Ophthalmology and Visual Science (incorporating the Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia.,Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia.,School of Medicine, Menzies Research Institute Tasmania, University of Tasmania, Hobart, Tasmania, Australia
| |
Collapse
|
3
|
Karaca U, Akıncıoğlu D, Ayyildiz O, Dogan D, Ozge G, Usta G, Mutlu FM. Comparison of obstructive sleep apnea syndrome and keratoconus patients on elevation maps. Int Ophthalmol 2021; 42:933-938. [PMID: 34661795 DOI: 10.1007/s10792-021-02074-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/24/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE This study aimed to compare the tomographic features of the cornea on elevation maps between obstructive sleep apnea syndrome (OSAS) and keratoconus (KC) patients and to investigate the presence of susceptibility to ectatic corneal diseases in OSAS patients. DESIGN This is a comparative cross-sectional case-control study. METHODS This study included 84 eyes of 42 patients diagnosed with severe OSAS using polysomnography (apnea/hypopnea index > 30), 84 eyes of 56 patients diagnosed with keratoconus, and 84 eyes of 42 healthy subjects as control group and evaluated in three groups. Elevation maps of all the groups were performed using Pentacam, and topometric, pachymetric, and deviation indices were recorded. RESULTS The study included 252 eyes of 130 participants divided in three groups. Comparing all the tomographic keratometric values, a significant difference was found among the three groups. All keratometric values were found to be higher in the OSAS patients group compared to those in the control group. Also topometric indices and Belin-Ambrosio enhanced ectasia display (BAD) were observed to be higher as in subclinical keratoconus and statistically significant when compared to those in the control group. CONCLUSION The study reveals the tomographic corneal characteristics and topometric and pachymetric indices of patients with severe OSAS at the time of diagnosis; these findings statistically significantly differ from the control group. In addition to the known association of floppy eyelid in OSAS patients, the suspicion of keratoconus should be kept in mind.
Collapse
Affiliation(s)
- Umut Karaca
- Department of Ophthalmology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey.
| | | | - Onder Ayyildiz
- Department of Ophthalmology, Gulhane Education and Research Hospital, Ankara, Turkey
| | - Deniz Dogan
- Department of Pulmonary Diseases, Gulhane Education and Research Hospital, Ankara, Turkey
| | - Gökhan Ozge
- Department of Ophthalmology, Gulhane Education and Research Hospital, Ankara, Turkey
| | - Gülşah Usta
- Department of Ophthalmology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Fatih Mehmet Mutlu
- Department of Ophthalmology, Gulhane Education and Research Hospital, Ankara, Turkey
| |
Collapse
|
4
|
Goyal M, Tiwari US, Jaseja H. Pathophysiology of the comorbidity of glaucoma with obstructive sleep apnea: A postulation. Eur J Ophthalmol 2021; 31:2776-2780. [PMID: 33478247 DOI: 10.1177/1120672121990580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Glaucoma is a serious and progressive optic neuropathy, the exact pathophysiology of which is still poorly understood. Furthermore, glaucoma exhibits significant comorbidity with obstructive sleep apnea (OSA) that warrants an in-depth study in view of highly probable beneficial and far-reaching clinical implications. In this brief paper, the authors have studied the existing theories in an attempt to explain the comorbidity and its underlying pathophysiology. From the ensuing evidence, the role of connective tissue strength has emerged as a major factor and which appears to play a pivotal role not only in the development of glaucoma but also in the underlying pathophysiology of its enigmatic comorbidity with OSA. Understanding the pathophysiology of the comorbidity can stimulate newer therapeutic strategies targeted toward strengthening of connective tissues that may at least retard if not arrest the progression of glaucomatous changes and their complications.
Collapse
Affiliation(s)
- Manish Goyal
- Department of Physiology, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India
| | - Uma Sharan Tiwari
- Department of Ophthalmology, Gajra Raja Medical College, Gwalior, Madhya Pradesh, India
| | | |
Collapse
|
5
|
Messmer EM. Hornhautveränderungen bei Liderkrankungen. Ophthalmologe 2020; 117:949-961. [DOI: 10.1007/s00347-020-01219-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Corneal Topographic, Anatomic, and Biomechanical Properties in Severe Obstructive Sleep Apnea-Hypopnea Syndrome. Cornea 2020; 39:88-91. [PMID: 31414996 DOI: 10.1097/ico.0000000000002102] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To determine corneal topographic, anatomic, and biomechanical properties in patients newly diagnosed with severe obstructive sleep apnea-hypopnea syndrome (OSAHS). METHODS This is a cross-sectional study including 25 patients recently diagnosed with severe OSAHS (apnea-hypopnea index above 30) and a paired control group of 25 healthy subjects. All patients underwent a complete eye examination with an elevation topography Pentacam Scheimpflug study and a study with Reichert Ocular Response Analyzer, collecting several topographic, anatomic, and biomechanical variables. RESULTS Fifty eyes of 25 patients (23 of them were men) diagnosed with OSAHS by somnography and the same number of healthy subjects (23 of them were men) were included, with an average age of 64 ± 11 years (range 45-78 years) for cases and an average age of 64 ± 11 years (range 45-81 years) for the controls. No differences were found in keratometry, cylinder, refractive indexes, Bad-D, or pachymetry. The mean corneal volume for cases was 58.64 ± 3.05 mm and for the controls 60.48 ± 3.33 mm (P = 0.005). The mean minimum radius for cases was 7.49 ± 0.31 and for the controls 7.36 ± 0.30 (P = 0.035). The mean elevation in apex for cases was 8.46 ± 5.18 and for the controls 2.38 ± 2.36 (P ≤ 0.001). Two eyes with a topographic diagnosis of keratoconus (KC) and another 6 with subclinical KC were detected using the Pentacam in the OSAHS group. CONCLUSIONS Many of the corneal topographic and biomechanical variables in patients with severe OSAHS present different values from the general population with a trend toward KC values, such as keratoconus index or paired keratoconus index. Compared with the control group, significant differences were found in corneal volume, corneal elevation, and minimum radius.
Collapse
|
7
|
|
8
|
Salinas R, Puig M, Fry CL, Johnson DA, Kheirkhah A. Floppy eyelid syndrome: A comprehensive review. Ocul Surf 2019; 18:31-39. [PMID: 31593763 DOI: 10.1016/j.jtos.2019.10.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 09/21/2019] [Accepted: 10/03/2019] [Indexed: 01/11/2023]
Abstract
Floppy eyelid syndrome (FES) is defined as eyelid hyperlaxity with reactive palpebral conjunctivitis. It is a common condition that can be associated with significant ocular irritation. FES presents with easily everted eyelids and chronic papillary conjunctivitis in the upper eyelids. It is frequently associated with ocular and systemic diseases, notably keratoconus and obstructive sleep apnea, respectively. This comprehensive review describes the epidemiology, pathological changes, proposed pathogenesis, clinical manifestations, and a variety of treatment options for this condition. Conservative treatment of FES includes aggressive lubrication, nighttime eye shield, and avoiding sleeping on the affected eye. Patients with FES and obstructive sleep apnea may have an improvement in their ocular signs and symptoms after long-term therapy with continuous positive airway pressure. In refractory cases, a corrective surgery that addresses the eyelid laxity can result in significant improvement. All patients with ocular irritation should be evaluated for the presence of FES.
Collapse
Affiliation(s)
- Ricardo Salinas
- Department of Ophthalmology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Madeleine Puig
- Department of Ophthalmology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Constance L Fry
- Department of Ophthalmology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Daniel A Johnson
- Department of Ophthalmology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Ahmad Kheirkhah
- Department of Ophthalmology, Long School of Medicine, University of Texas Health at San Antonio, San Antonio, TX, USA.
| |
Collapse
|
9
|
Corneal Biomechanical Properties in Obstructive Sleep Apnea Syndrome. Eye Contact Lens 2018; 44 Suppl 2:S361-S364. [DOI: 10.1097/icl.0000000000000489] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
10
|
Atalay K, Gurez C, Kirgiz A, Serefoglu Cabuk K. Does severity of dermatochalasis in aging affect corneal biomechanical properties? Clin Interv Aging 2016; 11:659-64. [PMID: 27274214 PMCID: PMC4876690 DOI: 10.2147/cia.s104656] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Purpose The aim of this study was to investigate the possibility of a relationship between corneal biomechanical properties and different grades of dermatochalasis. Patients and methods Patients were assigned to four groups according to the severity of their dermatochalasis: normal (Group 1), mild (Group 2), moderate (Group 3), and severe (Group 4). An Ocular Response Analyzer device was used to measure corneal hysteresis (CH), corneal resistance factor (CRF), and corneal-compensated intraocular pressure (IOPcc). Results We found no significant differences in the mean values of the CH, CRF, and IOPcc of all groups (P=0.75, P=0.93, and P=0.11, respectively). However, CH and IOPcc were negatively correlated in Group 1, Group 2, and Group 3 patients (P=0.013, r=−0.49; P=0.015, r=−0.52; and P=0.011, r=−0.47, respectively), but this correlation was not apparent in the Group 4 patients (P=0.57, r=0.12). CRF and IOPcc were correlated, but only in Group 4 (P=0.001, r=0.66). Conclusion Severe dermatochalasis was associated with altered corneal biomechanical properties. Some of the important visual consequences of dermatochalasis and related diseases (such as floppy eyelid syndrome) can be understood by considering corneal biomechanical alterations.
Collapse
Affiliation(s)
- Kurşat Atalay
- Department of Ophthalmology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Ceren Gurez
- Department of Ophthalmology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Ahmet Kirgiz
- Department of Ophthalmology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Kubra Serefoglu Cabuk
- Department of Ophthalmology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| |
Collapse
|
11
|
Reply. Cornea 2015; 34:e31. [DOI: 10.1097/ico.0000000000000560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
12
|
Kymionis GD, Tsoulnaras KI. Corneal Biomechanical Properties in Floppy Eyelid Syndrome. Cornea 2015; 34:e29. [DOI: 10.1097/ico.0000000000000527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
Corneal Biomechanical Properties in Floppy Eyelid Syndrome. Cornea 2015. [DOI: 10.1097/ico.0000000000000488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|