I hv myopia since child and doc. said i can't improve my sight by adding minuses in glasses, and gave me vitamin n optima pills for 2weeks.whts wrong?

Vitamins won't help: If stronger glasses no longer improve sight, then there is usually a medical condition in the eye causing the limitation. At 23 years old, such conditions are rare. Except for severe vit a deficiency there are few conditions that will significantly improve vision with 2 weeks of vitamins. If you vision is no longer fully correctable with glasses, you need a diagnosis from an ophthalmologist.

Get another opinion: You should be able to have an adequate explanation for your visual loss. It might be astigmatism, or something else. But i can tell you that vitamin pills for two weeks won't do a thing.