When used by doctors (with slit-lamp)
 | Make sure to use the illumination with an essentially-minimum intensity to avoid reflex secretion caused by photo-stimulation. Use diffuser if available. |
 | Perform the testing on the left eye using the L side of the strip. |
 | Read the score (length of the column stained by blue color). Mark with an oil pen if necessary. |
 | Switch to the R side of the strip, and perform the testing on the right eye. We recommend to fix the hand as shown in the left photo. |
When used by paramedical staff (without slit-lamp)
 | Hold the center of SMTube strip. Do not touch a tip of strip to avoid potential infections. |
 | Take the standing position with the patient as shown in the left photo. Fix the hand on the cheek of patient, so that the tip of SMTube is stabilized. |
 | Immerse the tip of the L side into the tear meniscus of the left lower eyelid for 5 seconds to absorb tears. Take extra care to not touch the conjunctiva nor the cornea with the tip of the strip. |
| Read the score (length of the column stained by blue color). Mark with an oil pen if necessary. |
 | Switch to the R side of the strip, and perform the testing on the right eye in the same manner as done on the left eye. |
Hold a strip as follows
Make sure to hold the center part of SMTube during the examination. SMTube absorbs tears by capirally action, and holding the column parts or blocking the hole near the center of strip may disturb the capirally action.
