Evaluation of corneal sensitivity to mechanical and chemical stimuli after LASIK.

Title
Evaluation of corneal sensitivity to mechanical and chemical stimuli after LASIK: a pilot study.

Source
Eye & Contact Lens: Science & Clinical Practice. 32(2):88-93, 2006 Mar.

PURPOSE:

To evaluate the effect of laser in situ keratomileusis (LASIK) on corneal sensitivity, nerve morphology, and tear film characteristics.

RESULTS:

Central corneal mechanical sensitivity was significantly reduced in the post-LASIK group compared with the control subjects. Nerve morphology was associated with mechanical threshold. Nerve morphology, mechanical sensitivity, and tear breakup time improved during the first 1 to 3 months after surgery, with little change thereafter. Chemical sensitivity was associated with tear secretion.

CONCLUSIONS:

Central corneal mechanical sensitivity is reduced in patients after LASIK, with partial recovery seen 3 months after surgery. A similar recovery trend is seen for nerve morphology.