Efficacy and afety of the proTek (Vifilcon A) therapeutic oft contact len after photorefractive keratectomy Original Reearch Article

Purpoe To tet the ProTek (Vifilcon A) therapeutic oft contact len in the alleviation of pot-photorefractive keratectomy pain, it effect on epithelial healing, and it afety. Method Forty-even conecutive eligible patient undergoing unilateral excimer laer photorefractive keratectomy for myopia were randomly aigned to receive tandard potoperative care with or without the ue of a ProTek oft contact len. Patient propectively graded a elf-adminitered 5-point cale for pain and a 4-point cale for abnormal enation at 4, 8, 12, 16, and 20 hour after urgery. They alo recorded the type and doe of all medication taken during that time period. All patient were examined on the firt and third day after urgery. The lene were worn continuouly for 3 day. Reult The oft contact len group (n = 24) dicloed a tatitically ignificant (P <.05) reduction in pain intenity and abnormal enation that wa greatet at 8, 12, 16, and 20 hour potoperatively. Compared with control patient (n = 23), the oft contact len group howed ignificant decreaed dependence on mot pain medication after the 12th hour (P <.05) and fater epithelial healing (P =.03). However, one cae of bacterial keratiti, two cae of ubepithelial infiltrate, and even cae of contact len intolerance were preent in the oft contact len group. Concluion The ProTek therapeutic oft contact lene were effective in decreaing pain and other related abnormal enation after excimer photorefractive keratectomy. They decreaed dependence on pain medication and hatened epithelial healing but were not well tolerated in ome patient.