Repository of Research and Investigative Information

Repository of Research and Investigative Information

Zahedan University of Medical Sciences

Masked comparison of two silicone hydrogel bandage contact lenses after photorefractive keratectomy

(2020) Masked comparison of two silicone hydrogel bandage contact lenses after photorefractive keratectomy. Contact lens & anterior eye : the journal of the British Contact Lens Association. ISSN 1476-5411 (Electronic) 1367-0484 (Linking)

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/32098716

Abstract

PURPOSE: To compare the efficiency and safety of two bandage contact lenses after photorefractive keratectomy (PRK). METHODS: In this double-blind study, 45 patients (90 eyes) received PRK in both eyes and wore bandage contact lenses (BCLs), PureVision (Bausch & Lomb, Rochester, NY, USA) in one eye and PureVision2 (Bausch & Lomb, Rochester, NY, USA) in the other eye, randomly assigned. The medication regimen after surgery was the same for both eyes. The epithelial defect's size, conjunctival hyperemia and lens centration were graded objectively using slit-lamp biomicroscopy on days 1, 3 and 5 after surgery. Also ocular symptoms of discomfort including tearing, photophobia, foreign body sensation and visual fluctuations were assessed subjectively at each visit. RESULTS: The mean epithelial defect size on the first day after operation was similar in eyes fitted with PureVision (30.08 +/- 5.30 mm(2)) and PureVision2 (30.25 +/- 5.72 mm(2)) lenses. (p = 0.79) Contact lens deposits and bulbar hyperaemia on days 1 and 3 after PRK were similar between the two eyes, but were significantly greater on day 5 for PureVision2 lenses. (p = 0.02; p = 0.04 respectively) There was no difference in contact lens decentration, and discomfort symptoms including pain, tearing, foreign body sensation, photophobia and visual fluctuations between the eyes fitted with PureVision and PureVision2. (p > 0.05) CONCLUSIONS: PureVision and PureVision2 contact lenses are equivalent as bandage lenses in important aspects such as corneal re-epithelialization and subjective comfort., although PureVision2 led to a higher incidence of contact lens deposits and conjunctival hyperemia early post-PRK.

Item Type: Article
Keywords: Balafilcon A Bandage contact lens Photorefractive keratectomy PRK Silicone hydrogel
Journal or Publication Title: Contact lens & anterior eye : the journal of the British Contact Lens Association
Journal Index: Pubmed
Identification Number: https://doi.org/10.1016/j.clae.2020.02.005
ISSN: 1476-5411 (Electronic) 1367-0484 (Linking)
Depositing User: خانم مهدیه رضائی پور
URI: http://eprints.zaums.ac.ir/id/eprint/3952

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