Schirmer tear testing This test Fig 34 provides information on the quantity of watery component in tear secretion

❖ Test: A strip of litmus paper is inserted into the conjunctival sac of the temporal third of the lower eyelid.

❖ Normal: After about five minutes, at least 15 mm of the paper should turn blue due to the alkaline tear fluid.

❖ Abnormal: Values less than 5 mm are abnormal (although they will not necessarily be associated with clinical symptoms).

The same method is used after application of a topical anesthetic to evaluate normal secretion without irritating the conjunctiva.

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Discarding Negative Habits

Discarding Negative Habits

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