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Raciborska A, Sidorczuk P, Konopińska J, Dmuchowska DA. Interocular Symmetry of Choroidal Parameters in Patients with Diabetic Retinopathy with and without Diabetic Macular Edema. J Clin Med 2023; 13:176. [PMID: 38202183 PMCID: PMC10779809 DOI: 10.3390/jcm13010176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/19/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024] Open
Abstract
This study focuses on the interocular comparison of choroidal parameters in diabetic patients with diabetic retinopathy (DR) with and without diabetic macular edema (DME), as well as in patients with unilateral DME (present in only one eye). The aim of this study was to determine the symmetry in order to obtain better insights into the pathophysiology of diabetic choroidopathy. This retrospective single-center cross-sectional study included 170 eyes from 85 patients (61 with DR and 24 controls), divided into subgroups depending on the presence of DME. The patients underwent fluorescein angiography and spectral domain optical coherence tomography examination, and the analysis included various choroidal parameters: choroidal thickness, volume, and the choroidal vascularity index (CVI). In terms of the choroidal thickness, one eye of a patient with DR, regardless of the presence, absence, or unilaterality of DME, may be treated as representative for that patient. CVI proved symmetrical for controls and patients with DR without DME. However, there was some asymmetry of CVI in patients with bilateral or unilateral DME. There was no straightforward relationship between choroidopathy and DME. Other mechanisms were also involved in the pathogenesis.
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Affiliation(s)
| | | | | | - Diana Anna Dmuchowska
- Ophthalmology Department, Medical University of Bialystok, 24a M. Sklodowskiej-Curie, 15-276 Bialystok, Poland; (A.R.); (J.K.)
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Yuhas PT, McHugh-Morrison C, Canavan J, Jeyandran J, Mahmoud AM, Roberts CJ. Intereye Differences in the Clinical Assessment of Intraocular Pressure and Ocular Biomechanics. Optom Vis Sci 2023; 100:688-696. [PMID: 37639554 PMCID: PMC10662582 DOI: 10.1097/opx.0000000000002066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 07/23/2023] [Indexed: 08/31/2023] Open
Abstract
SIGNIFICANCE Clinicians and researchers will have evidence whether intereye differences confound clinical measurements of intraocular pressure or of ocular biomechanical parameters. PURPOSE The purpose of this study was to determine whether intraocular pressure and biomechanical parameters, as measured by the Ocular Response Analyzer (ORA) and by Cornea Visualization with Scheimpflug Technology (CorVis ST), are different between the first and second eye measured. METHODS Intraocular pressure and biomechanical parameters were collected from both eyes of healthy participants (N = 139). The ORA measured corneal-compensated intraocular pressure, Goldmann-correlated intraocular pressure, and corneal hysteresis. The CorVis ST measured biomechanically corrected intraocular pressure, stiffness parameter at first applanation, and stiffness parameter at highest concavity. For each measurement, a paired t test compared the value of the first eye measured against that of the second eye measured. RESULTS For the ORA, Goldmann-correlated intraocular pressure was significantly higher ( P = .001) in the first eye (14.8 [3.45] mmHg) than in the second eye (14.3 [3.63] mmHg). For the CorVis ST, biomechanically corrected intraocular pressure was significantly higher ( P < .001) in the second eye (14.7 [2.14] mmHg) than in the first eye (14.3 [2.11] mmHg). Stiffness parameter at first applanation (intereye difference, 6.85 [9.54] mmHg/mm) was significantly ( P < .001) higher in the first eye than in the second eye. Stiffness parameter at highest concavity was significantly higher ( P = .01) in the second eye (14.3 [3.18] mmHg/mm) than in the first eye (14.0 [3.13] mmHg/mm). CONCLUSIONS Although there were statistically significant intereye differences in intraocular pressure and in biomechanical parameters for both devices, the variations were small and thus unlikely to affect clinical outcomes.
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Affiliation(s)
| | | | - Joshua Canavan
- College of Optometry, The Ohio State University, Columbus, Ohio
| | | | - Ashraf M. Mahmoud
- Department of Ophthalmology and Visual Sciences, College of Medicine, The Ohio State University, Columbus, Ohio
| | - Cynthia J. Roberts
- Department of Ophthalmology and Visual Sciences, College of Medicine, The Ohio State University, Columbus, Ohio
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, Ohio
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Akagi T, Kato-Takano Y, Miyamoto D, Sakaue Y, Igarashi R, Iikawa R, Arimatsu M, Miyajima M, Togano T, Fukuchi T. Relationship between Inter-Eye Asymmetries in Corneal Hysteresis and Visual Field Severity in Patients with Primary Open-Angle Glaucoma. J Clin Med 2023; 12:4514. [PMID: 37445554 DOI: 10.3390/jcm12134514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
This study investigated the influence of asymmetric corneal hysteresis (CH) on asymmetric visual field impairment between right and left eyes in patients with primary open-angle glaucoma (POAG) without a history of intraocular surgery. CH, corneal resistance factor (CRF), and corneal compensated intraocular pressure (IOPcc) were measured using the Ocular Response Analyzer. Differences between the eyes (right eye-left eye: DIFRL) and CH-based and in target parameters (higher CH eye-lower CH eye: DIFCH) were calculated in the same patient. In 242 phakic eyes of 121 patients, older age (p < 0.001), lower CH (p = 0.001), and lower CRF (p = 0.007) were significantly associated with worse standard automated perimetry (SAP) 24-2 mean deviation (MD). The DIFsRL in axial length (p = 0.003), IOPcc (p = 0.028), and CH (p = 0.001) were significantly associated with the DIFRL in SAP24-2 MD, but not in central corneal thickness (CCT), Goldmann applanation tonometry (GAT) measurement, and CRF. When dividing the patients into two groups based on the median of the CH DIFsCH (0.46), the DIFsCH in CRF (p < 0.001), IOPcc (p < 0.001), CCT (p = 0.004), SAP24-2 MD (p < 0.001), and SAP10-2 MD (p = 0.010) were significantly different between the groups. Large inter-eye asymmetry in CH is an important explanatory factor for disease worsening in patients with POAG.
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Affiliation(s)
- Tadamichi Akagi
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yukiho Kato-Takano
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Daiki Miyamoto
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yuta Sakaue
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ryoko Igarashi
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ryu Iikawa
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Mao Arimatsu
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Makoto Miyajima
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Tetsuya Togano
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Takeo Fukuchi
- Division of Ophthalmology and Visual Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
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Pietrowska K, Dmuchowska DA, Godlewski A, Grochowski ET, Wojnar M, Gosk W, Konopinska J, Kretowski A, Ciborowski M. Extent of interocular (a)symmetry based on the metabolomic profile of human aqueous humor. Front Mol Biosci 2023; 10:1166182. [PMID: 37065449 PMCID: PMC10090416 DOI: 10.3389/fmolb.2023.1166182] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/17/2023] [Indexed: 03/31/2023] Open
Abstract
Aims: Interocular comparison of the metabolomic signature of aqueous humor (AH) was performed. The aim of the study was to quantitatively evaluate the symmetry in concentrations of various metabolites belonging to different categories.Methods: The study included AH samples from 23 patients, 74.17 ± 11.52 years old, undergoing simultaneous bilateral cataract surgery at the Ophthalmology Department of the Medical University of Bialystok, Poland. Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS)-based targeted metabolomics and lipidomics analyses of AH samples were performed using the AbsoluteIDQ® p180 kit. Out of 188 metabolites available in the kit, 67 were measured in the majority (>70%) of the samples: 21/21 amino acids, 10/22 biogenic amines, 9/40 acylcarnitines, 0/14 lysophosphatidylcholines, 21/76 phosphatidylcholines, 5/15 sphingolipids, and 1/1sum of hexoses.Results: The comparison of both eyes revealed that the concentrations of metabolites did not differ significantly (p < 0.05) except for taurine (p = 0.037). There was moderate-to-strong positive interocular correlation (r > 0.5) between most metabolites regarding concentration. This was confirmed by the high intraclass correlation coefficient (ICC) values of different levels, which varied for the different metabolites. However, there were exceptions. Correlations were not significant for 2 acylcarnitines (tiglylcarnitine and decadienylcarnitine) and 3 glycerophospholipids (PC aa C32:3, PC aa C40:2, and PC aa C40:5).Conclusion: With a few exceptions, a single eye was found to be representative of the fellow eye in terms of the concentration of most of the analyzed metabolites. The degree of intraindividual variability in the AH of fellow eyes differs for particular metabolites/metabolite categories.
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Affiliation(s)
- Karolina Pietrowska
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
| | - Diana Anna Dmuchowska
- Department of Ophthalmology, Medical University of Bialystok, Bialystok, Poland
- *Correspondence: Diana Anna Dmuchowska, ; Michal Ciborowski,
| | - Adrian Godlewski
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
| | | | - Malgorzata Wojnar
- Department of Ophthalmology, Medical University of Bialystok, Bialystok, Poland
| | - Wioleta Gosk
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
| | - Joanna Konopinska
- Department of Ophthalmology, Medical University of Bialystok, Bialystok, Poland
| | - Adam Kretowski
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Michal Ciborowski
- Clinical Research Center, Medical University of Bialystok, Bialystok, Poland
- *Correspondence: Diana Anna Dmuchowska, ; Michal Ciborowski,
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Issashar Leibovitzh G, Trope GE, Buys YM, Tarita-Nistor L. Perceptual Grouping During Binocular Rivalry in Mild Glaucoma. Front Aging Neurosci 2022; 14:833150. [PMID: 35693345 PMCID: PMC9175031 DOI: 10.3389/fnagi.2022.833150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 04/25/2022] [Indexed: 11/14/2022] Open
Abstract
Purpose This study tested perceptual grouping during binocular rivalry to probe the strength of neural connectivity of the visual cortex involved in early visual processing in patients with mild glaucoma. Methods Seventeen patients with mild glaucoma with no significant visual field defects and 14 healthy controls participated. Rivalry stimuli were 1.8°-diameter discs, containing horizontal or vertical sine-wave gratings, viewed dichoptically. To test the grouping, two spatially separated identical stimuli were presented eccentrically to the same or different eyes and to the same or different hemifields. The outcome measures were the time of exclusive dominance of the grouped percept (i.e., percept with synchronized orientations), the rivalry rate, and the epochs of exclusive dominance. Results For both groups, the grouping occurred primarily for the matching orientations in the same eye/same hemifield (MO SE/SH) and for the matching orientations in the same eye/different hemifield (MO SE/DH) conditions. Time dominance of the grouped percept of the glaucoma group was similar to that of the control group in all conditions. The rivalry rates in the MO SE/SH and MO SE/DH conditions were significantly larger in the control group than in the glaucoma group. The epochs of exclusive dominance of the grouped percept in the MO SE/SH condition were a median of 48-ms longer for the control group, but a median of 116-ms shorter for the glaucoma group when compared to those in the MO SE/DH condition. Conclusion Patients with mild glaucoma show clear impairments in binocular rivalry while evidence for deficits in perceptual grouping could be inferred only indirectly. If these deficits truly exist, they may have implications for higher levels of visual processing, such as object recognition and scene segmentation, but these predictions remain to be tested in future studies.
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Affiliation(s)
- Galia Issashar Leibovitzh
- Krembil Research Institute, Donald K. Johnson Eye Institute, University Health Network, Toronto, ON, Canada
| | - Graham E. Trope
- Krembil Research Institute, Donald K. Johnson Eye Institute, University Health Network, Toronto, ON, Canada
- Department of Ophthalmology and Vision Sciences, Toronto Western Hospital, Toronto, ON, Canada
| | - Yvonne M. Buys
- Krembil Research Institute, Donald K. Johnson Eye Institute, University Health Network, Toronto, ON, Canada
- Department of Ophthalmology and Vision Sciences, Toronto Western Hospital, Toronto, ON, Canada
| | - Luminita Tarita-Nistor
- Krembil Research Institute, Donald K. Johnson Eye Institute, University Health Network, Toronto, ON, Canada
- *Correspondence: Luminita Tarita-Nistor,
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