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Updated: May 18, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
A tertiary level hospital-based study on frequency of changing presbyopic glasses in primary open angle glaucoma
Saibendu Kumar Lahiri1, Asim Chakrabarti, Gautam Narayan Sarkar
1Department of Community Medicine, RG Kar Medical College, Kolkata 700004.
Abstract:
A tertiary level hospital-based case control study on frequency of changing presbyopic glasses among primary open angle glaucoma cases was carried out jointly by the departments of community medicine and ophthalmology from 1st July to 31st December, 2008. Each of the case and control groups included 31 persons. Odd's ratio of 4.55 (95% CI = 1.37-15.68) using epi-info version 3.2 showed that among primary open angle glaucoma cases the time of changing spectacles at < or = 2 years was 4.55 times more than that among control group; Pearson's Chi-square test (chi2 = 7.94, df = 1, p = 0.00) was statistically significant; Z-test for proportion = 2.56, p=0.01. So changing spectacles at < or = 2 years among patients would help the paramedical workers/paramedical ophthalmic assistants in the community to refer the patients earlier to ophthalmologists for further investigation and management.
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