Talk to Eye Specialist on Eyesight Issues

I Have Week Eyesight Since When I Was 15 Years Old. One Eye Number Increasing Years By Years And Now Is -5. But Other Is Increasing Very Slowly And Is -1.25. My Opthalmologist Once Said That It Will Stable At Around 21 Years, But Now I Am 26 But Eye Number Is Not Stable Yet. I Am Very Afraid Now. Even I Can't Get Lasik Surgery. Please Give Honest Opinion. Will I Go Blind From It? When It Will Stop? How To Slow Down It? Is There Any Medicine For It? Thank You