Hello Aspirant...

The minimum acceptable visual standards will be as under :-Visual Standards
Standard I : Distant Vision (uncorrected) 6/6 (Both eyes)
Standard II : Distant Vision- Better eye 6/18 Worse eye 5/18 Correctable to 6/166/19 The minimum acceptable visual standard for admission to Sainik School will be standard II. Candidates with visual standard II admitted to NDA after successful completion of their training in Sainik School may be found fit for army only.

I hope this information helps.

Regards.