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A monocular acuity test can be administered on the right or left eye by
occluding the eye not being tested. With one eye occluded, the subject will
only see two columns with letters.
Some of the binocular irregularities that can occur are:
1. Either right or left column appears fuzzy and blurred
2. A complete lack of targets in either right or left column will indicate a
vision problem
3. An intermittent disappearance of targets in either the right or left column
4.
Failure to fuse the right and left eye area of the slide into three columns
of letters
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