My left eye blurry. My observations: Astigmatism test: Left eye: line are not clear I seen 3mm shadow. Right eye: clear Duochrome test: Left eye: blurry on red (3mm shadow) Right eye: both are same on red&green 80% clear. Distance test: Let eye:            Near vision: text are clear 30 cm, blure less then 30 cm.             Distance vision: object are large and not clear. Right eye: text are clear 23 cm.  Object are small and clear. I feel uncomfortable on left eye. I did a my lasik(Contoura vision eye7 hospital Delhi) before 6 month ago. After lasik. My left eye vision 6/9. My Right eye vision 6/6. After 6 month both eye may be 0 number by machine test. (Not sure) . May I know is it possible retreat by lasik? Is it any risk ? How much possibly to correction? .