Hi aspirant,

The eyesight requirements for NDA states that 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 the case for Astigmatism.  So converting the mentioned case into standard values you  will be eligible for admission to armed forces. However requirements are more strict for other two wings, so cant confirm in that case.

Hope it helps!!