Dear aspirant !

Hope you are doing great ! It is not possible to get in defence army with the Lasik surgery ,i have seen many aspirants they got reject due to eyes problem , it is not possible to get in marchant navy with poor eye sight ,however if your condition is not so bad then may be you may enter in it ,mention your eye sight in comment section like -0.5 ,-1.5 etc .

Hope it helps you !

Thank you