its because the doctor covered his second eye with tape and tested him with the that was not covered. Later that day my brother asked me to test him with and with out his glasses. So i made my own chart and here it is:

But when i printed it there wasn't so much ink in the printer so it didn't come out good. In a couple of days when ever i have time i will test him with my chart.
How will i print it if there isn't any ink in the printer?
Because my father switched inks not long ago.
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