OBJECTIVE: Comparison of clinical results from mechanical and transepithelial debridement during photorefractive keratectomy. DESIGN: Randomized, prospective study. PARTICIPANTS: Two hundred seventy-eight eyes in 173 patients between November 1995 and June 1997. INTERVENTION: Photorefractive keratectomy treatments with a Summit Omnimed excimer laser (6-mm). Clinical results were measured at 1, 3, and 6 months. MAIN OUTCOMES MEASURES: Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BCVA), mean spherical equivalent (MSE), astigmatism, corneal haze, and subjective vision (day, night, glare, and halo). RESULTS: At all postoperative intervals, no significant difference was present between mean values of MSE, haze, or any subjective parameters. For mean UCVA, BCVA, and astigmatism values, a significant difference (P < 0.05) was present only at 6 months. At all postoperative intervals, mechanical values tended to be superior to transepithelial valves. CONCLUSION: Clinical results were not statistically different between the two techniques; however, the mechanical technique tended to have superior values for almost all tested parameters.
RCT Entities:
OBJECTIVE: Comparison of clinical results from mechanical and transepithelial debridement during photorefractive keratectomy. DESIGN: Randomized, prospective study. PARTICIPANTS: Two hundred seventy-eight eyes in 173 patients between November 1995 and June 1997. INTERVENTION: Photorefractive keratectomy treatments with a Summit Omnimed excimer laser (6-mm). Clinical results were measured at 1, 3, and 6 months. MAIN OUTCOMES MEASURES: Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BCVA), mean spherical equivalent (MSE), astigmatism, corneal haze, and subjective vision (day, night, glare, and halo). RESULTS: At all postoperative intervals, no significant difference was present between mean values of MSE, haze, or any subjective parameters. For mean UCVA, BCVA, and astigmatism values, a significant difference (P < 0.05) was present only at 6 months. At all postoperative intervals, mechanical values tended to be superior to transepithelial valves. CONCLUSION: Clinical results were not statistically different between the two techniques; however, the mechanical technique tended to have superior values for almost all tested parameters.
Authors: Alexander Harold Rodriguez; Virgilio Galvis; Alejandro Tello; Margarita María Parra; Marcela Ángela Rojas; Mosquera Samuel Arba; Anthony Paul Camacho Journal: Rom J Ophthalmol Date: 2020 Apr-Jun