Is corrected vision 0.8 normal?

Corrected vision to reach 08 is normal and the patient's age, because the patient's eye development is gradually completed with age, different age groups of patients with corrected vision standards are not the same. For 4 to 5 years old children, if the corrected vision can reach 0.8 is normal. For patients over 6 years old if the corrected vision can only reach 0.8 is slightly lower than normal. Should be further to the hospital ophthalmology examination. To determine whether there are congenital cataracts, fundus lesions, amblyopia and other reasons, resulting in corrected vision can not reach normal.