Dear Sindhura, PwD candidates need to have disability certificate. If you feel your vision deficiency has significantly affected your academic life and you had to struggle against your physical challenge to study, then you need to get a PwD certificate. Only a person with 40% or more disability is eligible for any government benefit. So you need to check with any doctor if this eye sight falls under that category. If yes, you can get a certificate of proof of the same and you can opt for PwD category in JEE Mains.