A. Tear film break-up.
C. Rose Bengal test.
D. Jone’s dye test.
Ans:B. Schirmer’s test.
- This test is basically prepared to quantitate tear production.
- This test is used when a person experiences very dry eyes or excessive watering of the eyes.
- It consists of placing a small strip of filter paper inside the lower eyelid (inferior fornix).
- The eyes are closed for 5 minutes. The paper is then removed and the amount of moisture is measured.
- Schirmer’s Test is done in two ways.
I. Schirmer’s without anaesthetic
II.Schirmer’s with Anaesthesia : (Done to rule out reflex tearing)
Reflex tearing indicates basal secretion.
After explaining to the patient, apply topical anaesthetic drops in both eyes, dry the culde-sac
gently with sterile cotton, and perform the Schirmer’s test II in the same way as Schirmer’s test 1.
- Normally it should not exceed 30 mm.
- A value of more than 30 mm is considered to be epiphora.
- A value of less than 15 mm is considered to be dry eye (hyposecretion).
- Mild which is 14-9 mm wetting of the paper after 5 minutes.
- Moderate which is 8-4 mm wetting of the paper after 5 minutes.
- Severe which is <4 mm wetting of the paper after 5 minutes.