advertisement
Abstract #112591 Published in IGR 24-3
Central contrast sensitivity perimetry discriminates between glaucomatous and non-glaucomatous eyes
Abu EK; Abraham CH; Dadzie AK; Morny EA; Ntodie M; Ocansey S; Abokyi S; Owusu-Ansah A; Addo NA; Williams M; Aboagye-McCarthy A; Sakyi-Badu G; Hope PKF; Adueming POTherapeutic advances in ophthalmology 2023; 15: 25158414231208284
BACKGROUND: Glaucoma is an optic neuropathy which causes irreversible vision loss. Standard perimetry, which is essential for glaucoma diagnosis, can only detect glaucomatous visual filed loss when considerable structural damage has occurred. Contrast sensitivity is one of the visual function tests that is reduced in eyes with glaucoma. It is known to be affected in pre-perimetric stages of glaucoma. OBJECTIVE: The objective of this study was to investigate the discriminating ability of central contrast sensitivity perimetry in eyes with and without glaucoma. DESIGN: The study employed a cross-sectional study design. METHODS: The study participants were made of two groups; eyes diagnosed with glaucoma by an ophthalmologist based on visual field test and optical coherence tomography (OCT) and age- and sex-matched controls who were declared free from glaucoma. Static contrast sensitivity (CS) was measured in the central 10° of visual field using a custom psychophysical test. RESULTS: There were 45 eyes with glaucoma and 45 age- and sex-matched controls in this study. The static CS in the glaucoma group was significantly reduced in 9 out of the 13 tested locations in the central 10° of the visual field. The mean static CS at 5°, 10°, superior hemifield and inferior hemifield were all significantly reduced in the glaucoma patients compared to the controls. CONCLUSION: Static CS measurement is a sensitive approach that can be utilized to aid in the detection of glaucoma. The use of static CS can be adopted in the development of a cost-effective yet sensitive screening tool for the detection of glaucoma.
Department of Optometry and Vision Science, College of Health and Allied Sciences, University of Cape Coast, Ghana.
Full article