The Association between Preoperative Dry Eye Symptoms and Postoperative Discomfort in Patients Underwent Photorefractive Keratectomy

Table 1

Preoperative dry eye symptoms (OSDI score) and postoperative discomfort.

Parameter	OSDI = 0 ()	OSDI > 0 ()	value
Preoperative contact lens (%)	49.5	52.9	0.69
Pain sensation	3.51	4.04	0.02
Photophobia	3.21	3.58	0.14
Quality of vision	3.37	3.50	0.33
Foreign body sensation	3.27	3.50	0.24
Tearing	3.03	2.88	0.52
Use of anesthetic drops	1.37	1.52	0.61