To compare the lotrafilcon B and comfilcon A silicone hydrogel bandage contact lenses after photorefractive keratectomy (PRK).Methods:
One hundred twenty eyes of 60 patients who underwent PRK were included in this randomized clinical trial study. In the end of the surgery, the lotrafilcon B (Air Optix; Ciba Vision, Duluth, GA) was used in one eye and the comfilcon A (Biofinity; Coopervision, Fairport, NY) was used in the fellow eye randomly. Pain and discomfort were assessed on the first and third day after surgery by visual analogue scale.Results:
The mean pain score was 3.75±3.32 and 4.47±3.60 on the first day (P=0.253) and 3.63±3.48 and 4.16±3.60 on the third day (P=0.416) after the use of the lotrafilcon B and comfilcon A, respectively. The results showed no significant difference between the two groups (P=0.823). The mean score of foreign body sensation was 4.31±3.38 and 5.49±3.04 on the first day (P=0.045) and 4.44±3.34 and 5.13±3.23 on the third day (P=0.250) after the use of the lotrafilcon B and comfilcon A, respectively. The comfilcon A lens caused a more severe foreign body sensation only on the first day. There was no significant difference in photophobia, epiphora, and blurred vision between the two lenses (P>0.05).Conclusions:
Both lotrafilcon B and comfilcon A silicone hydrogel bandage contact lenses reduce clinical symptoms after PRK effectively. We found no difference in pain control and discomfort between them. However, the patients using the lotrafilcon B lens showed less foreign body sensation on the first day postoperatively.