This is an app for portable vision testing. At home, at school, you can always measure your vision and let you easily understand your eye health. You can use this result to judge whether you want to see a doctor or wear glasses. Come and try it!
This is an app for portable vision testing. At home, at school, you can always measure your vision and let you easily understand your eye health. You can use this result to judge whether you want to see a doctor or wear glasses. Come and try it!
本文标题：Detecting vision
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