If healed scar on retina is present & but not over macula & fovea ,it is not going disturb your vision in future ,just have regular check up at least once in a year with same retinal specialist so that he may keep watching on the size of the scar ,it should not increase in size.
If scarring has occurred nothing can be done. Some causes of scarring are recurrent. And sometimes asymptomatic. Hence will recommend regular comprehensive dilated eye checkup. At 6 to 24 months interval depending on the cause of scarring and your eye status.
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