Low down onf low vision_transcript_2018.12.5

Prisms. can join double vision or displace vision if you are unable to look to one side. Prisms are optical devices. They adjust how you see objects. So for example if you have double vision, the prism will move the second image you see onto the first, so you only see one. A . patch. over one eye can also be used to avoid troublesome double vision. ................
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