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Comparison Between Viscous Teardrops and Saline Solution to Fill Orthokeratology Contact Lenses Before Overnight Wear

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Carracedo Rodríguez, Juan Gonzalo and Villa Collar, César and Martín Gil, Alba and Serramito Blanco, María and Santamaría, Leticia (2018) Comparison Between Viscous Teardrops and Saline Solution to Fill Orthokeratology Contact Lenses Before Overnight Wear. Eye & Contact Lens: Science & Clinical Practice, 44 (5). S307-S311. ISSN 1542-2321

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Official URL: http://dx.doi.org/10.1097/ICL.0000000000000416




Abstract

Objective: To compare, in terms of efficacy, the differences between the use of saline solution and a viscous artificial tear to fill the lens during the first month of orthokeratology wear.
Methods: A pilot, double-masked, crossed, randomized, and prospective study was conducted. In this study, 20 subjects (14 males and 6 females) with a mean age of 16.29±6.22 years (range, 10–26) were fitted with orthokeratology contact lenses. For the study, nonpreserved 0.9% NaCl commercial saline solution (Avizor, Madrid, Spain) and nonpreserved artificial teardrops with 0.3% of hyaluronic acid (Ocudry 0.3%; Avizor, Madrid, Spain) were used. Corneal staining, tear break up time (TBUT), topography, refraction, visual acuity, and subjective comfort and vision with the visual analog scale (score from 0 to 10, being 10 better comfort and vision) were evaluated at 1 day, 1 week, and 1 month of contact lens wear.
Results: The corneal staining was statistically greater in the saline group than in the Ocudry group for the first day and during 1 week of wear (P<0.05). Comfort was found to be statistically better, with Ocudry 0.3% than saline solution, being 7.17±1.94 and 6.37±1.63, for the first day, and 8.78±0.43 and 8.15±0.62 for the day 28, respectively (P<0.05). However, no differences were found for subjective vision scores, TBUT, spherical equivalent, best-corrected visual acuity and uncorrected visual acuity, and mean keratometry between groups for any visit (P>0.05).
Conclusion: Viscous artificial tears improve the subjective comfort of patients and reduce the corneal staining, compared with saline solution during the orthokeratology lenses fitting process. However, no differences between solutions for the treatment efficacy, in vision and corneal topography, were found.


Item Type:Article
Additional Information:

Accepted July 11, 2017

Uncontrolled Keywords:Orthokeratology; Artificial tears; Corneal staining; Comfort; Visual quality
Subjects:Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Eyes anatomy
Medical sciences > Optics > Physiological optics
ID Code:51192
Deposited On:18 Feb 2019 16:35
Last Modified:19 Feb 2019 08:58

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