My son aged 9 years was referred to ophthalmologist since he was unable to read letters at long distance. Thus he has been detected with vision of following in Right eye UCVA 6/12, spherical -1, cyl -.50, Axis 115. Left eye UCVA 6/18, Spherical -.076, cyl - nil, Axis - nil Is this Temporary disorder or permanent one. How long will it take to correct it.

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