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Table 5 Causes of visual impairment in better eye after best correction

From: Prevalence and causes of low vision and blindness in an elderly population in Nepal: the Bhaktapur retina study

Cause Unilateral low vision (Number/Percent) Bilateral low vision (Number/Percent) Unilateral blindness (Number/Percent) Bilateral blindness (Number/Percent)
Cataract 364 (76.15) 290 (68.07) 65(55.08) 13 (43.33)
Retinal disorders 100 (20.92) 122 (28.64) 38 (32.20) 14(46.66)
Corneal scar 5 (1.04) 4(5.63) 3 (2.54) 1(3.33)
Glaucoma 4 (0.84) 3 (0.70) 2 (1.69)  
Optic atrophy   2 (0.47)   1 (3.33)
PCO 4 (0.84) 3 (0.70)   1 (3.33)
Asteroid hyalosis 1(0.20) 2 (0.47)   
Secondary glaucoma    2 (1.69)  
Phthisis bulbi    5 (4.24)  
Amblyopia    2 (1.69)  
Advanced pterygium    1 (0.85)  
Total 478 (25.69% of all) 426 (22.9% of all) 118 (6.34% of all) 30 (1.61% of all)
  1. Best corrected visual acuity (BCVA) in better eye measured in LogMAR
  2. Low vision (< 0.3 LogMAR ≥1.3 LogMAR), Blindness (> 1.3 LogMAR)
  3. Abbreviation: PCO Posterior Sub capsular Cataract