한국안광학회지 (Journal of Korean Ophthalmic Optics Society)

한국안광학회 (The Korean Ophthalmic Optics Society)
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크로스실린더를 이용한 난시정밀검사에서 검사 전 최소착란원 위치에 따른 난시교정값의 변화

Changes of Corrective Astigmatism Values Depending on Position of Circle of Least Confusion in Astigmatic Refining Test Using Cross Cylinder

  • 김상엽 (강원대학교 안경광학과) ;
  • 이민재 (강원대학교 안경광학과) ;
  • 이강천 (강원대학교 안경광학과) ;
  • 이태희 (강원대학교 대학원 보건의료과학과) ;
  • 문병연 (강원대학교 안경광학과) ;
  • 조현국 (강원대학교 안경광학과)
  • Kim, Sang-Yeob (Dept. of Optometry, Kangwon National University) ;
  • Lee, Min Jae (Dept. of Optometry, Kangwon National University) ;
  • Lee, Kang Cheon (Dept. of Optometry, Kangwon National University) ;
  • Lee, Tae Hui (Dept. of Medical Health Science, Graduate School, Kangwon National University) ;
  • Moon, Byeong-Yeon (Dept. of Optometry, Kangwon National University) ;
  • Cho, Hyun Gug (Dept. of Optometry, Kangwon National University)
  • 투고 : 2015.08.01
  • 심사 : 2015.08.19
  • 발행 : 2015.09.30
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초록

목적: 크로스실린더를 이용한 난시정밀검사에서 망막 상의 최소착란원 위치가 난시교정값에 미치는 영향을 알아보고자 하였다. 방법: 평균나이 $22.24{\pm}2.48$세의 62명(115안)을 대상으로 검사하였다. 방사선시표를 이용한 난시검사 후 최대교정시력이 얻어진 구면굴절력(MPMVA) 상태에서 크로스실린더를 이용한 정밀검사를 실시하였다. 그런 다음 S+0.75 D, S+0.50 D, S+0.25 D, S-0.25 D, S-0.50 D, 그리고 S-0.75 D의 렌즈를 각각 더한 상태(최소착락원의 위치이동)에서 동일한 정밀검사를 실시하고, 얻어진 검사값을 MPMVA 상태에서 얻어진 검사값과 비교하였다. 결과: MPMVA 상태의 검사값과 비교하여 더해준 (+)구면렌즈와 (-)구면렌즈가 증가할수록 축 변화량은 증가하였다. 동일한 검사상태에서 난시굴절력이 높을수록 축 변화량은 감소하였다(p<0.05). MPMVA 상태의 검사값과 비교하여 더해준 (+)구면렌즈가 증가할수록 난시굴절력은 낮게 나타났고(p<0.05), (-)구면렌즈가 증가할수록 높게 나타났다. (+)구면렌즈를 더해준 경우, 동일한 검사상태에서 난시굴절력이 높을수록 검사값의 차이는 더 크게 나타났다. 결론: 올바른 난시교정값을 얻기 위해서 크로스실린더를 이용한 난시정밀검사 전 최소착락원 위치를 정확히 조정하여야 한다.

Purpose: To investigate the changes of corrective values of astigmatism caused by the position of circle of least confusion on retina in refining astigmatic test using cross cylinder. Methods: 62 subjects (115 eyes) aged $22.24{\pm}2.48$ years participated for this study. After astigmatic test using a radial chart, refining test was performed using a cross cylinder in a condition of maximum plus to maximum visual acuity (MPMVA). Astigmatic refining test was repeatedly performed in each condition of which S+0.75 D, S+0.50 D, S+0.25 D, S-0.25 D, S-0.50 D, and S-0.75 D are added to spherical lenses of MPMVA. The measured values were compared with the values in MPMVA condition. Results: As compared with values in condition of MPMVA, change of astigmatic axis was increased with add the power of (+) spherical lenses and (-) spherical lenses. In same spherical condition, change of astigmatic axis was decreased with increment of astigmatic power (p<0.05). The corrective power of astigmatism was reduced with increment of (+) spherical lenses (p<0.05), and was raised with increment of (-) spherical lenses compared with the power in MPMVA condition. In case of adding (+) spherical lenses, difference of astigmatic power increased with increment of corrective astigmatism power in same test condition. Conclusions: In order to obtain a proper values for corrective astigmatism, position of circle of least confusion should be accurately adjusted before the performing an astigmatism's refining test.

키워드

참고문헌

  1. Anderson P. Cross Cylinders. The Australasian Journal of Optometry. 1923;5(8):170-175. https://doi.org/10.1111/j.1444-0938.1923.tb02259.x
  2. Carlson NB, Kurtz D. Clinical procedures for ocular examination, 3rd Ed. New York: McGraw-Hill, 2003;101-103.
  3. Del Priore LV, Guyton DL. The jackson cross cylinder: A reappraisal. Ophthalmology. 1986;93(11):1461-1465. https://doi.org/10.1016/S0161-6420(86)33545-0
  4. O'leary DJ, Yang PH, Yeo CH. Effect of cross cylinder power on cylinder axis sensitivity. Am J Optom & Physiol Optics. 1987;64(5):367-369. https://doi.org/10.1097/00006324-198705000-00011
  5. Dill P. Cross-cylinder methods of measuring astigmatic errors. The Australasian Journal of Optometry. 1934;17(1):23-29.
  6. Von Noorden GK. Binocular vision and ocular motility, 5th Ed. St. Louis: Mosby. 1996;216-254.
  7. Bennet AG. An historical review of optometric principles and techniques. Ophthalmic Physiol Opt. 1986;6(1):3-21 https://doi.org/10.1111/j.1475-1313.1986.tb00696.x
  8. Benjamin WJ. Borish's Clinical Refraction, 2nd Ed. St. Louis: Butterworth-Heinemann, 2006; 812-830.
  9. Pascal JI. Cross cylinder test-Meridional balance technique. Optical Journal and Review of Optometry. 1950;87(18):31-33.
  10. Sung PJ. Optometry, 8th Ed. Seoul: Daihakseorim, 2013;369-372.
  11. Fairmaid JA. The constancy of corneal curvature. Br J Physiol Opt. 1959;16(1):2-23.
  12. Williamson-Noble FA. A possible fallacy in the use of the cross-cylinder. Br J Ophthalmol. 1943;27(1):1-12. https://doi.org/10.1136/bjo.27.1.1
  13. Lee HJ. A study on the accommodative astigmatism of near vision. J Korean Ophthalmic Opt Soc. 2011;16(3):327-331.
  14. Joo SH, Sim HS. A study for the change of astigmatism axis when the fixation point moved for distance to near distance. J Korean Ophthalmic Opt Soc. 2007;12(2):47-59.

피인용 문헌

  1. Effect of Visual acuity for Change of Astigmatism axis in Myopic astigmatism vol.13, pp.12, 2015, https://doi.org/10.14400/JDC.2015.13.12.285
  2. Effect of Undercorrected Astigmatism on Visual Acuity According to Essential Astigmatism Power vol.23, pp.4, 2018, https://doi.org/10.14479/jkoos.2018.23.4.415
  3. Study of Visual Function Changes According to the Induced Astigmatic Axis Error vol.25, pp.3, 2020, https://doi.org/10.14479/jkoos.2020.25.3.283