Help and frequently asked questions

Why does the optician cover one of my eyes?

Answer: 

This part of the test is called the divergence/convergence test.

The alignment of the eyes is observed, and the eyes are alternately covered and uncovered while the person looks at a target.

This tests the eyes' resting positions and their response to focusing and targeting on an object.

If your eyes are misaligned it might indicate a squint, an uncorrected optical error or even a neurological problem.

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