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http://dx.doi.org/10.14479/jkoos.2013.18.3.271

The Change of Corneal Refractive Power by Everted Silicone Hydrogel Contact Lens Wear  

Kim, Soo-Hyun (Dept. of Optometry, Konyang university)
Shin, Dong-Min (Dept. of Optometry, Konyang university)
Jeong, Ju-Hyun (Dept. of Optometry, Konyang university)
Publication Information
Journal of Korean Ophthalmic Optics Society / v.18, no.3, 2013 , pp. 271-277 More about this Journal
Abstract
Purpose: The purpose was to study the corneal refractive power changes associated with the wearing of everted silicone hydrogel soft lenses. Methods: The corneal refractive power and corneal astigmatism were measured using corneal topographer (CT-1000, Shin-nippon Co., Japan) for checking change of corneal refractive power and objective refractive error was measured by auto-refractometer (Natural vision-K 5001, Shin-nippon Co., Japan). We measured at baseline and 1 week after lens wearing. Results: The correcting of corneal refractive power could be effective in low myopia. It's more effective to the higher power of greatest meridian of cornea and the more corneal astigmatism. 73% of subjects' refractive error was decrease less than 1 D and 17% of the subjects had an reverse effect (increase) occurs. The reduction of objective refractive error was more effective when cornea refractive power was great or corneal astigmatism was much. Conclusions: Pressure which the everted silicone hydrogel lens to the cornea could be caused. It occurred as the degrees of corneal power, corneal astigmatism and objective refractive error differences. Selection of an appropriate subject is important considering difficulty of changing the parameters of the lens.
Keywords
Everted silicone hydrogel lens; Corneal refractive power change; Corneal topography; Orthokeratology;
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Times Cited By KSCI : 6  (Citation Analysis)
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