I am a 27-year-old female. My specs power was constant from 7 years but two years earlier I developed cylindrical power in both the eyes. 0.75 in left and 1.5 in right. Now a few days ago I got my eyes checked and the cylindrical power in my left eye is 1.5 and the power become -8 .earlier it was 7. 25. Also the power in right eye was reduced .now it is 5.50earlier it was 6.5. I got my visual field test for the eyes and it showed 100% in left eye and 95% in right eye. Recently I have started seeing floaters in my right eye and I feel that aided left eye has more brightness than my aided right eye and I also feel some pressure in my eyes. The doctor checked my Retina and also measured the eye pressure in both the eyes. Pressure was 18 in left as 19 in right. She said retina is fine. Then what could be the cause of all this?