AIM:To explore the factors affecting on the making time of LASEK corneal flap.

METHODS:A retrospective analysis from August 2009 to August 2012 in our hospital in 320 cases treated by LASEK in myopic patients(640 eyes), the patients were grouped according to age, 18-23 years, 24-29 years, 30- 35 years, and greater than 35 year were divided into 4 groups(A, B, C, D), each group according to whether wearing contact lenses for more than 3 months, divided into 2 subgroups(I, II), the average flap preparation time statistics for each group.

RESULTS: Most of the patients in postoperative 2-4h after a foreign body sensation, presented ocular pain. Corneal epithelium was basically healed after about 7days. Visual acuity recovered to the best after 20d. After 6 months, the average visual acuity was 1.23±0.15. Flap preparation time 11-30s, average 18±3.5s. With the increase of age, flap preparation time was significantly prolonged. For those wearing contact lens over 3 months, flap preparation time was significantly longer. There was significant difference(P<0.05)after analyzing the same age as 2 subgroups(I, II). Flap preparation time in male and female patients with the same age had no significantly difference(P>0.05).

CONCLUSION: With the increase of age, flap preparation time is significantly prolonged. Long-term wear contact lens is the important factor in the success of production. For those wearing contact lens over 3 months, flap preparation time was significantly longer.