Study of interocular asymmetry of visual field defects in Primary open angle glaucoma and Primary angle closure glaucoma
Journal Title: Journal of Medical Science And clinical Research - Year 2018, Vol 6, Issue 1
Abstract
Aim: To study the interocular asymmetry of visual field defects in primary open angle glaucoma and primary angle closure glaucoma Materials and Methods: A hospital based, randomised, prospective, observational study of 200 eyes of 100 patients fulfilling the inclusion / exclusion criteria attending the outpatient department of Minto ophthalmic hospital from October 2013 to February 2016. Patients detailed history taken and ocular examination done, followed by static automated white on white perimetry with size III stimulus, 24 – 2 SITA standard. AGIS scores (total, superior, inferior, nasal) and global indices analysed. Comparisons between POAG and PACG were made for the mean asymmetry scores of total/nasal/superior/inferior hemifields and mean asymmetry score of individual global indices (MD and PSD). Results: The mean IOP was higher in PACG group (30.06 3.5mmHg) vs POAG group (27.05 +2.5mm Hg) at the time of diagnosis. Higher mean ocular asymmetry score in global indices M.D ( POAG - 1.72 ±8.6 vs PACG -4.63±9.7, p <0.0001), PSD ( POAG 1.42 ± 0.16 vs PACG 2.20 ± 0.22, p<0.0001) and AGIS total score (POAG 2.23 ± 0.14 vs PACG1.4 ± 0.12, p< 0.0001), superior score( POAG 0.74 ± 0.16 vs PACG1.04 ± 0.22, p<0.0001), inferior score (POAG 0.66 ± 0.3 vs PACG1.18 ± 0.9,p<0.0001), nasal score(POAG 0.30 ± 0.06 vs PACG 0.38 ± 0.09, p = 0.5269).Correlation values also indicated higher asymmetry in PACG group. Conclusion: There is greater interocular asymmetry of visual field defects as measured by AGIS and global indices in PACG than POAG.
Authors and Affiliations
Dr Rishika H
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