Dear candidate

Medical standard of eyesight for NDA is as follows-

A candidate should be able to read in a distant vision chart 6/6 in better eye and 6/9 in worse eye with or without glasses. Myopia should not be more than 2.5 D and hypermetropia not more than 3.5 D including Astigmatism. Internal examination of the eye will be done by means of ophthalmoscope to rule out any disease of the eye. A candidate must have good binocular vision.

You should be able to recognise gree and red colour.

Also you have to give them a certificate in which it is stated that neither you or any member of your family has suffered from congenital night blindness.

Hope this will helpful.good luck