한국안광학회지 (Journal of Korean Ophthalmic Optics Society)

한국안광학회 (The Korean Ophthalmic Optics Society)
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역방향 실리콘 하이드로겔 렌즈 착용에 따른 각막 굴절력 변화

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

  • 김수현 (건양대학교 안경광학과) ;
  • 신동민 (건양대학교 안경광학과) ;
  • 정주현 (건양대학교 안경광학과)
  • 투고 : 2013.07.26
  • 심사 : 2013.09.14
  • 발행 : 2013.09.30
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초록

목적: 본 연구는 역방향(Everted) 실리콘 하이드로겔 렌즈 착용 후 각막 굴절력의 변화에 대하여 연구하였다. 방법: 각막 굴절력의 변화를 알아보기 위해 corneal topographer(CT-1000, Shin-nippon Co., Japan)를 이용하여 주경선 굴절력과 각막난시를 측정하였고, 굴절이상도 변화는 자동굴절검사기(Natural vision-K 5001, Shin-nippon Co., Japan)를 이용하여 타각적 굴절검사를 실시하였다. 렌즈 착용 전과 착용 1주일 후의 변화를 알아보았다. 결과: 각막 굴절력의 변화를 본 결과 경도 근시에서 보다 효과적으로 각막 굴절력을 교정할 수 있었고, 각막의 강주경선의 굴절력이 클수록, 각막난시가 많을수록 각막 눌림이 많았다. 대상자의 73%가 1 D이하의 타각적 굴절이상도 감소를 보였고, 17%가 굴절이상도가 증가하는 역효과가 나타났다. 타각적 굴절이상도의 감소는 각막 굴절력이 크고 각막난시가 많을 때 효과적이었다. 결론: 역방향 하이드로겔 렌즈에 의해 각막눌림이 야기될 수 있고, 이는 각막 굴절력과 각막난시, 타각적 굴절이상도에 따라 정도의 차이가 발생하였다. 렌즈의 파라미터를 변경하기 힘든 점을 고려하여 적정한 대상자의 선정이 중요할 것으로 사료된다.

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.

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참고문헌

  1. Briceno-Garbi EA. Variations in corneal curvature and refractive error in CAB gas-permeable contact lens wearers. J Am Optom Assoc 1984;55(3):217-219.
  2. Polse KA, Sarver MD, Kenyin E, Bonanno J. Gas permeable hard contact lens extended wear: ocular and visual responses to a 6-month period of wear. CLAO J. 1987; 13(1):31-38.
  3. Iskeleli G, Oral AY, Celikkol L. Changes in corneal radius and thickness in response to extended wear of rigid gas permeable contact lenses. CLAO J. 1996;22(2):133-135.
  4. Binder PS, May CH, Grant SC. An evaluation of orthokeratology. Ophthalmology 1980;87(8):729-744. https://doi.org/10.1016/S0161-6420(80)35171-3
  5. Soni PS, Nguyen TT, Bonanno JA. Overnight orthokeratology: visual and corneal change. Eye Contact Lens. 2003; 29(3):137-145. https://doi.org/10.1097/01.ICL.0000072831.13880.A0
  6. Alharbi A, Swarbrick HA. The effects of overnight orthokeratology lens wear on corneal thickness. Invest Ophthalmol Vis Sic. 2003;44(6):2518-2523. https://doi.org/10.1167/iovs.02-0680
  7. Szczotka LB, Aronsky M. Contact lenses after LASIK. J Am Optom Assoc. 1998;69(12):775-784.
  8. Shin DB, Yang KM, Lee SB, Kim MG, Lee JL. Effect of reverse geometry lens on correction of moderate-degree myopia and cornea. J Korean Ophthalmol Soc. 2003;44(8): 1748-1756.
  9. Mun MY, Lee KJ, Sun KH. Clinical assessments of the orthokeratology. Korean J Vis Sci. 2007;9(3):317-331.
  10. Park SH, Na KS, Kwon HG, Lee HS, Joo CK. The First Survey Report on the Current Trends in Prescription of Orthokeratologic Lenses in Korea. J Korean Ophthalmol Soc. 2009;50(4): 505-509. https://doi.org/10.3341/jkos.2009.50.4.505
  11. Choo JD, Caroline PJ, Holden BA, Evans SR, Ho A, Bergenske PD. Soft contact lenses can induce orthokeratology- like topographical changes. Invest Ophthalmol Vis Sci. 2005;46:E-Abstract 2062.
  12. Eger MW. Inadvertent corneal reshaping with silicone hydrogel lenses. Contact Lens Spectrum, 2005;September.
  13. Felmman M. A new device targets lens eversion. Contact Lens Spectrum, 2006;January.
  14. Caroline PJ, AndrMP. Corneal changes after everted hydrogel lens wear. Contact Lens Spectrum, 2006;May.
  15. Caroline PJ, AndrMP. Soft lens orthokeratology. Contact Lens Spectrum. 2007;June.
  16. Caroline PJ, AndrMP. Lessons in soft orthokeratology. Contact Lens Spectrum. 2010;August.
  17. Caroline PJ, AndrMP. Topographical changes after everted silicone hydrogel wear. Contact Lens Spectrum. 2005;June.
  18. Kinoshita BT, Lampa M, Caroline P. Unique applications for silicone hydrogel lenses. Contact Lens Spectrum. 2008;September.
  19. Kim SH, Jeong JH. Effect of everted(inside out) silicone hydrogel lens on corneal topographical changes. J Korean Oph Opt Soc. 2012;17(4):389-394.
  20. Mountford J. An analysis of the changes in corneal shape and refractive error induced by accelerated orthokeratology. ICLC. 1997;24(4):128-144.
  21. Moon MY, Lee GJ. The effect of long-term orthokeratology in different age groups. J Korean Oph Opt Soc. 2008; 13(4):65-73.
  22. Garkeet NL, Mountford JA, Carney LG. Predicting success with orthokeratology lens wear: a retrospective analysis of ocular characteristics. Optom Vis Sci. 1995;72(12): 892-898. https://doi.org/10.1097/00006324-199512000-00007
  23. Wie HY, Lee DH, Kim JM. The efficacy and safety of dream lens(TM) in school children. J Korean Ophthalmol Soc. 2004;45(6):913-919.
  24. Yoon MH, Lee KY. A Comparative study on the effects of wearing reverse geometry lenses by degrees of myopia. J Korean Oph Opt Soc. 2012;17(3):265-272.
  25. Kim SH, Lee JH, Kim CS. The influence of factors before wearing reverse-geometry lens on visual acuity after wearing reverse-geometry lens. J Korean Oph Opt Soc. 2010; 51(10):1305-1311. https://doi.org/10.3341/jkos.2010.51.10.1305
  26. Yoon MH, Park HJ. A study on change in ocular components after wearing reverse geometry lenses. Korean J Vis Sci. 2013;15(1):53-64.
  27. Jayakumar J, Swarbrick HA. The effect of age on shortterm orthokeratology. Optom Vis Sci 2005;82(6):505-511. https://doi.org/10.1097/01.opx.0000168583.17327.6d
  28. Na JH, Choi JH, Yang JW, Lee YC, Kim SY. The relationship between asphericity and visual acuity after wearing reverse-geometry lens. J Korean Oph Opt Soc. 2009; 50(5):670-676. https://doi.org/10.3341/jkos.2009.50.5.670
  29. Shin DB, Yang GM, Lee SB, KIM MG, LEE JL. Effect of reserve geometry lens on correction of moderate-degree myopia and cornea. J Korean Oph Opt Soc. 2003;44(8): 1748-1756.
  30. Wlodyga RJ, Bryla C. Corneal molding: the easy way. Contact lens spectrum. 1989;4(8):58-65.
  31. Cheung SW, Cho P. Subjective and objective assessments of the effect of orthokeratology - a cross-sectional study. Current Eye Research. 2004;28(2):121-127. https://doi.org/10.1076/ceyr.28.2.121.26236