According to the WHO definition (2019 update), 'moderate vision impairment' is defined as presenting distance visual acuity:

• A Worse than 6/60 but equal to or better than 3/60
• B Worse than 3/60 but equal to or better than 1/60
• C Worse than 6/12 but equal to or better than 6/18
• D Worse than 6/18 but equal to or better than 6/60 ✓

Explanation

The 2019 WHO ICD-11 categories: mild vision impairment = VA worse than 6/12 to ≥6/18; moderate vision impairment = worse than 6/18 to ≥6/60; severe vision impairment = worse than 6/60 to ≥3/60; blindness = worse than 3/60 (or visual field <10°). This replaced the older ICD-10 categories where blindness was <3/60. In India, the NPCB definition of blindness uses <6/60 in the better eye with best correction.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.