Tears, breaks, and detachments in the retina are not visible from the outside. Diagnosis requires a comprehensive eye exam, during which a specialist uses a light and magnification instrument to examine the interior of the eye. Additional lenses and tools may also be used.
Early diagnosis gives the best chance of preserving vision. Small tears can often be treated with laser therapy or a gas injection, both relatively straightforward procedures. More significant detachments require surgery.

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