Comparison of bandage contact lens removal on the fourth versus seventh post-operative day after photorefractive keratectomy: A randomized clinical trial

AbstractPurposeTo compare the outcomes of bandage contact lens (BCL) removal on the fourth versus seventh post-operative day following photorefractive keratectomy (PRK).MethodsThis study recruited eyes of patients who underwent PRK surgery. The patients were randomly assigned to 2 groups. In Group 1 BCL was removed on the 4th post-operative day, while in Group 2, BCL was removed on the 7th post-operative day. After BCL removal, patients were asked to express their pain score and eye discomfort. At one and three months follow up examinations, visual acuity scale was assessed. Slit lamp examination was performed in all visits to evaluate complications.Results260 eyes of 130 patients underwent PRK. The age and sex ratio were not significantly different between the two groups. One month after the surgery, the Log MAR UDVA and CDVA were significantly lower in Group 2 (P value = 0.016, 0.001 respectively), however, the UDVA and CDVA were not significantly different after 3 months (P > 0.05). In Group 1, filamentary keratitis (FK) was observed in 10 (7.6%) eyes, 6 (4.61%) eyes were diagnosed with recurrent corneal erosion (RCE) and corneal haze was detected in 3 (2.3%) eyes. However, in Group 2, RCE was observed in 4(2.3%) and FK was noted in 4 (3.07%) eyes. No haze was seen in Group 2. The difference in rate of complications was statistically significant (14.6% and 6.1% in Groups 1 and 2, respectively, P = 0.02). Pain and eye discomfort scores were not significantly different (P > 0.05). There was no major complications including infectious keratitis in either groups.ConclusionFollowing PRK surgery, BCL removal on the seventh post-operative day yields faster visual rehabilitation and lower rate of post-operative complications with no increase in eye pain, discomfort or infection