I consulted a doctor regarding headache after prolonged computer usage. She asked me to read Snellen chart. I was able to read it without any problem. But I wasn't sure whether the last line was visible clear and so I took some time to read it. I told the doctor that the letter 'O' in last line seemed 'Q' . She then asked me to wear some instrument with many lenses and changed one by one. After some trial everything was clear. In the report my eye sight was 20/20 and 6/6. The glasses she prescribed was plus 0.25 dipotre. (+0.25D). What am I suffering from? Long sight or short sight?
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I have a doubt about my eye glasses?