According to the data on this list, at least the vision of the left eye should not be 0.5, and it is very likely that the sequelae of refractive surgery-corneal opacity has occurred. If this is the case, there is no particularly effective way, only hormone eye drops (although widely used, but the effect is not exact), can only wait for the possible slow self-elimination. Time is generally calculated in months, and it will not fade for one month, four months or four months, depending on the number of years.

Another possibility is corneal edema after refractive surgery, which usually disappears in a week or so. If it fails to fade within a week, it is basically a smog problem.