How do I convert eyesight into fractions like 6/6 or 6/20? My eyesight is L: -6.00, R: -5.50 (spherical) + 0.5 (cylinderical at +90 degrees.
I wear a -10 eye lens in my left eye and -6.5 in my right. A year before it was -6 and -2.5 respectively! What should I do? Should I go for LASIK?