BACKGROUND AND OBJECTIVE: One hundred thirteen eyes were treated with photoastigmatic keratectomy using theVISX 20/20 excimer laser. The results were evaluated after 1 year. PATIENTS AND METHODS: The patients were divided into 2 groups, low astigmatism group with less than 2.00 diopters (D) of pre-operative astigmatism, the second group having 2.00 D or more. RESULTS:Astigmatism was reduced by 43.9% in the low astigmatic group and by 71.7% in the high astigmatic group. Eighty percent of the eyes in the low astigmatic group and 90% in the high astigmatic group achieved an uncorrected visual acuity of 20/40 (0.5) or better. Eighty-four percent in the low astigmatic group and 80% in the high astigmatic group were within +/- 1.00 D in spherical equivalent results. The mean spherical equivalent results were about -0.45 D in both groups using this algorithm. CONCLUSION: The results are very promising at this early stage of algorithm development.
RCT Entities:
BACKGROUND AND OBJECTIVE: One hundred thirteen eyes were treated with photoastigmatic keratectomy using the VISX 20/20 excimer laser. The results were evaluated after 1 year. PATIENTS AND METHODS: The patients were divided into 2 groups, low astigmatism group with less than 2.00 diopters (D) of pre-operative astigmatism, the second group having 2.00 D or more. RESULTS: Astigmatism was reduced by 43.9% in the low astigmatic group and by 71.7% in the high astigmatic group. Eighty percent of the eyes in the low astigmatic group and 90% in the high astigmatic group achieved an uncorrected visual acuity of 20/40 (0.5) or better. Eighty-four percent in the low astigmatic group and 80% in the high astigmatic group were within +/- 1.00 D in spherical equivalent results. The mean spherical equivalent results were about -0.45 D in both groups using this algorithm. CONCLUSION: The results are very promising at this early stage of algorithm development.
Authors: Juan Gros-Otero; Montserrat Garcia-Gonzalez; Miguel A Teus; MariLuz Iglesias-Iglesias; Carlos Gimenez-Vallejo Journal: J Optom Date: 2016-10-14