The visual standard prescribed for NDA exam is given below. Specification Naval Air Force Uncorrected without glass 6/6 6/6, 6/9 Corrected with glass 6/6 6/6 (only for Hypermetropia) Limits of Myopia -0.75 Nil Limits of Hypermetropia 1.5 2.00 D Sph Limits of Colour Perception I Nil Binocular Vision III Nil Manifest Myopia N.A. Nil Re Tinoscopic Myopia N.A. 0.5 Colour Vision N.A. CP-I (MLT) Astigmatism N.A. 0.75 Cyl (within 2.0 D.Max) Near Vision N.A. N-5 each eye