Importance of Screening for open-angle glaucoma and its effe
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A Study was conducted to evaluate the effect of population screening on low vision and blindness from open-angle glaucoma.

A very large population based screening for glaucoma was conducted in which total of 42497 subjects were invited, of which 32918 were screened and 9579 non-responders did not participate.

Patients diagnosed at or after the screening were assessed for moderate or severe vision impairment, which were called as low vision, or blindness by the WHO definition. Researchers corrected for selection bias by creating a group of potential screening participants from a comparison group of clinical patients.

Results:
--The cumulative incidence of blindness was 0.17% in the screened population versus 0.32% among the potential participants; and for low vision 0.25% versus 0.53%.

--The risk ratio between the two was 0.52 for blindness and 0.46 for low vision.

--There were no differences in the proportion of potential confounders between the comparison group and the non-responders.

It was suggested that population screening may reduce bilateral low vision and blindness from glaucoma by about 50%.

Source: https://www.ajo.com/article/S0002-9394(21)00154-9/fulltext?rss=yes
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