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R. S. Arcieri, C. A. Gonçalves, C. M. Odloak, D. A. Miyamoto, G. A. Auwaerter, G. Victor, L. H. T. Bóro, M. A. Garcia, E. S. Arcieri; Use of Silicone Hydrogel Contact Lens at Photorefractive Keratectomy Postoperative. Invest. Ophthalmol. Vis. Sci. 2010;51(13):3413.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the influence of two different types of contact lenses on corneal reepithelialization and the subjective comfort of patients that undergone photorefractive keratectomy (PRK) with 0.02% mitomycin C.
Retrospective study with chart review. Forty eyes of 20 patients, with spherical equivalent between -1.00 to -5.00 undergone PRK with 0.02% micomycin C for 30 seconds. The eyes were divided in two groups. Hydrogel group: eyes that received silicone hydrogel contact lens and Gelatinous group: contralateral eyes that received gelatinous contact lens after surgery. All patients used both types of contact lenses, one in each eye. All patients answered a questionnaire with daily assessment of symptoms, from first to seventh day after surgery. Evaluation of epithelial healing (re-epithelization) was performed by slit lamp biomicroscopy. Both patient and doctor who perform questionnaire and evaluation were masked regarding the type of contact lens.
None of the eyes had re-epithelization in the first postoperative day. On the third day, three eyes of the hydrogel group and two eyes of the gelatinous group had complete re-epithelization. Half of the eyes of the hydrogel group and 12 eyes of the gelatinous group presented complete re-epithelization on the fifth postoperative day. Two eyes of the hydrogel group and one eye of the gelatinous group did not complete the re-epithelization until the seventh day. The rate of re-epithelization between the first and third days, between the third and fifth days, and between the fifth and seventh days was 35.60 ± 12.90 mm2 x 34.72 ± 13.60 mm2, 2.56 ± 3.75 mm2 x 2.77 ± 5.17 mm2, and 0.50 ± 1.09 mm2 x 0.42 ± 1.45 mm2 in the hydrogel and gelatinous groups, respectively.
There is a tendency to faster re-epithelization in patients who used the silicone hydrogel lens. Further studies with more patients are needed to confirm these assessments.
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