Convergence Insufficiency Symptom Survey (CISS)

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	None (0)	Infrequently/ not very often (1)	Sometimes (2)	Fairly often (3)	Always
Do your eyes feel tired when reading or doing close work?
Do your eyes feel uncomfortable when reading or doing close work?
Do you have headaches when reading or doing close work?
Do you feel sleepy when reading or doing close work?
Do you lose concentration when reading or doing close work?
Do you have trouble remembering what you have read?
Do you have double vision when reading or doing close work?
Do you see the words move, jump, swim or appear to oat on the page when reading or doing close work?
Do you feel like you read slowly?
Do your eyes ever hurt when reading or doing close work?
Do your eyes feel sore when reading or doing close work?
Do you feel a “pulling” feeling around your eyes when reading or doing close work?
Do you notice the words blurring or coming in and out of focus when reading or doing close work?
Do you lose your place while reading or doing close work?

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