한국안광학회지 (Journal of Korean Ophthalmic Optics Society)

한국안광학회 (The Korean Ophthalmic Optics Society)
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토릭소프트콘택트렌즈의 착용 후 축 정렬 상태의 변화 분석

Analysis of Axial Mis-alignment After Wearing of Toric Soft Contact Lenses

  • Kim, Sang-Yoeb (Dept. of Optometry, Kangwon National University) ;
  • Lee, Dong Yeol (Dept. of Ophthalmic Optics, Taegu Science University) ;
  • Lee, Sun-Haeng (Dept. of Ophthalmic Optics, Gimhae College University) ;
  • Kim, Kun-Kyu (Dept. of Optometry, Sunlin University) ;
  • Song, Sop (Vision Institutes of Song and Associates) ;
  • Cho, Hyun Gug (Dept. of Optometry, Kangwon National University)
  • 투고 : 2010.06.04
  • 심사 : 2010.09.18
  • 발행 : 2010.09.30
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초록

목적: 토릭소프트콘택트렌즈(TSCL) 최초 착용 후 발생한 축의 정렬상태 변화를 분석하여 추적검사에 의한 피팅의 필요성을 강조하고자 하였다. 방법: 근시성 난시 87안을 대상으로 시험콘택트렌즈를 1주일 간 착용시킨 후, 틈새 등현미경을 이용하여 시험렌즈에 표시된 축 표시의 정렬상태를 관찰하여 회전된 축을 LARS법에 따라 교정하였다. 최종 교정 후 축 정렬상태를 최초 처방값과 비교하여 변화된 축의 회전율, 회전 각도, 그리고 회전방향을 처방 렌즈의 원주굴절도와 구면굴절도에 따라 나누어 분석하였다. 결과: 원주굴절력이 클수록, (-)구면굴절력이 클수록 TSCL의 축 회전율은 높았으나 회전 각도는 평균 $10^{\circ}{\sim}13^{\circ}$로 굴절력 정도에 따른 차이가 없었다. 그리고 축 회전방향은 코쪽보다 귀쪽으로 회전한 비율이 더 높았다. 결론:TSCL 착용 후 축 회전은 시력저하를 유발하므로 반드시 추적검사 결과에 따라 축 정렬 조정을 실시하여야 한다.

Purpose: To emphasize the necessity of post-fitting by follow-up test, the mis-alignment was analyzed after initial wearing of toric soft contact lenses (TSCL). Methods: After trial contact lenses were worn to 87 eyes with myopic astigmatism for 1 week, we observed the alignment of axis mark on trial contact lenses using slit lamp and corrected the rotated axis by method of LARS. After final fitting, rotation ratio, rotation degree and rotation position were analyzed compared to initial prescription divided to amount of cylinderical and spherical powers. Results: Rotation ratio of TSCL's axis was increased as increment of both cylinderical powers and (-)spherical powers. An average of rotation degree was $10^{\circ}{\sim}13^{\circ}$ which was not related to amount of their powers. Rotation position of TSCL's axis was more to temporal than to nasal. Conclusions: Because mis-alignment of axis after TSCL wearing induce the poor sight, adjustment of axial alignment as a result of follow-up must be performed.

키워드

참고문헌

  1. Bennett E. S. and Weissman B. A., "Clinical contact lens practice", Lippincott Williams, Philadelphia, USA, pp.1-10(2005).
  2. Timberlake G. T., Doane M. G., and Bertera J. H., "Short-term, low-contrast visual acuity reduction associated with in vivo contact lens drying", Optom. Vis. Sci., 69:755-760(1992). https://doi.org/10.1097/00006324-199210000-00002
  3. Fonn D., Gauthier C. A., and Pritchard N., "Patient preferences and comparative ocular response to rigid and soft contact lenses", Optom. Vis. Sci., 72:857-863(1995). https://doi.org/10.1097/00006324-199512000-00003
  4. 이군자, 마기중, "콘택트렌즈", 대학서림, 서울, pp.270-272(1995).
  5. Lindsay R. G., Burce A.S., Brennan N. A., and Pianta M. J., "Determining axis misalignment and power errors of toric soft lenses", Int. Contact Lens Clin., 24(3):101-106(1997). https://doi.org/10.1016/S0892-8967(97)00035-7
  6. Watanabe R. K., "Clinical cases in contact lenses", Butterworth-Heinemann, NY, USA, pp.31-33(2002).
  7. Capone R. C., "Astigmatism, In: K. E. Brookman, Refractive Management of Ametropia", Butterworth-Heinemann, Boston, pp.78(1996).
  8. Kruse A. and Lofstrom T., "How much visual benefit does an astigmatism achieve being corrected with a toric correction?", ICLC., 23:59-65(1996).
  9. 김정희, 강수아, "난시안의 교정축 이탈과 교정시력과의 관계 연구", 한국안광학회지, 12(3):83-87(2007).
  10. Hanks A. J., Weisbarth R. E., and McNally J. J., "Clinical performance comparisons of toric soft contact lens designs", ICLC., 14:16-20(1987).
  11. Young G., "Toric lenses, gravity and other forces", Spectrum, January:39-40(2007).
  12. Hickson-Curran S., Veys J., and Dalton L., "A new dualthin zone disposable toric lens", Optician, 219:5736(2000).
  13. Snyder C., "A review and discussion of crossed cylinder effects and over-refractions with toric soft contact lenses", Int. Contact Lens Clin., 16(4):113-118(1989). https://doi.org/10.1016/S0892-8967(89)80029-X
  14. Watanabe R. K., "Managing the astigmatism with contact lenses", Contact Lens Spectrum, 14(8):42-47(1999).
  15. Dabkowski J. A., Roach M. P., and Begley C. G., "Softtoric versus spherical lenses in myopes with low astigmatism", TCLC., 19:252-255(1992).
  16. 이민아, 김현정, 김재민, "구면과 토릭 소프트 렌즈로 교정한 약도 난시안의 대비감도와 눈부심", 한국안광학회지, 14(1):39-45(2009).
  17. 박재관, 유근창, 김용근, "콘택트렌즈 착용자의 실태조사", 한국안광학회 추계학술대회, 47-48(2007).