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Visual Performances of the Corrected Navarro Accommodation-Dependent Finite Model Eye

안구의 굴절능 조절을 고려한 수정된 Navarro 정밀모형안의 시성능 분석

  • Published : 2007.10.25

Abstract

In recent years, there has been rapid progress in different areas of vision science, such as refractive surgical procedures, contact lenses and spectacles, and near vision. This progress requires a highly accurate modeling of optical performance of the human eyes in different accommodation states. A new novel model-eye was designed using the Navarro accommodation-dependent finite model eye. For each of the vergence distances, ocular wavefront error, accommodative response, and visual acuity were calculated. Using the new model eye ocular wavefront error, accommodation dative response, and visual acuity are calculated for six vergence stimuli, -0.17D, 1D, 2D, 3D, 4D and -5D. Also, $3^{rd}\;and\;4^{th}$ order aberrations, modulation transfer function, and visual acuity of the accommodation-dependent model eye were analyzed. These results are well-matched to anatomical, biometric, and optical realities. Our corrected accommodation-dependent model-eye may provide a more accurate way to evaluate optical transfer functions and optical performances of the human eye.

모형안은 안구의 굴절력 교정 수술이나 콘택트렌즈, 안경 등 시력 보정을 위한 기구를 설계하는 등, 다양한 목적아래서 안구의 시성능을 최적모델링 하기 위해 발전해 왔다. 특히, 안구의 가변적인 굴절능 조절 과정을 내포하는 모형안을 세우고, 환경변화에 따른 모형안의 광학 성능을 정확하게 모델링하는 것은 매우 중요하다. 본 연구는 사람 안구가 단계적으로 굴절능 조절을 행할 때 기존의 해부학적 광학형상 변화를 포함하고 안구의 파면수차와 조절반응을 고려한 모형안을 제시하였다. 본 연구에서 제시된 모형안은 조절자극의 세기에 따른 조절반응 부족량, 3차와 4차 수차, 변조전달함수, 시력 등이 제시되었으며, 그 모형안을 바탕으로 계산한 결과 값은 실제 안구에서 측정한 값들을 만족하였다. 본 연구에서 제안된 모형안은 조절의 단계적 변화에 따른 안구의 광학적 성능과 변조저달 함수의 계산, 사람 눈의 시성능 변화를 보다 정확하게 예측하는데 좋은 도구를 제공할 것이다.

Keywords

References

  1. 김상기, '이론적 정밀모형안에 기초한 환산모형안의 광학상수,' 한국광학회지, 제15권 3호, pp. 268-273, 2004
  2. A. Gullstrand, Helmholtz' Treatise on Physiological Optics, (Optical Society of America, New York, 1924), pp. 226-376
  3. W. Lotmar, 'Theoretical eye model with aspherics,' J. Opt. Soc. Am., vol. 61, pp. 1522-1529, 1971 https://doi.org/10.1364/JOSA.61.001522
  4. A. C. Kooijman, 'Light distribution on the retina of a wide angle theoretical eye,' J. Opt. Soc. Am., vol. 73, pp. 1544- 1550, 1983 https://doi.org/10.1364/JOSA.73.001544
  5. R. Navarro, J. Santamaria, and J. Bescos, ' ccommodation dependent model of the human eye with aspherics,' J. Opt. Soc. Am. A, vol. 2, pp. 1273-1281, 1985 https://doi.org/10.1364/JOSAA.2.001273
  6. H-L. Liou and N. A. Brennan, 'Anatomically accurate, finite model eye for optical modeling,' J. Opt. Soc. Am. A, vol. 14, pp. 1684-1695, 1997 https://doi.org/10.1364/JOSAA.14.001684
  7. J. W. Blaker, 'Toward an adaptive model of the human eye,' J. Opt. Soc. Am., vol. 70, pp. 220-223, 1980 https://doi.org/10.1364/JOSA.70.000220
  8. Agnieszka Popiolek-Masajada and Henryk Kasprzak, 'Model of the optical system of the human eye during accommodation,' Ophthal. Physiol. Opt., vol. 22, pp. 201-208, 2002 https://doi.org/10.1046/j.1475-1313.2002.00024.x
  9. A. D. Atchison, Optics of the Human Eye, (Butterworth- Heinemann, Oxford, U. K., 2000) pp. 172
  10. Tobias Buehren and Michael J. Collins, ' ccommodation stimulus-response function and retinal image quality,' Vision Research, vol. 46, pp. 1633-1645, 2006 https://doi.org/10.1016/j.visres.2005.06.009
  11. J. C. He, 'Monochromatic aberrations in the accommodated human eye,' Vision Research, vol. 40, pp. 41-48, 2000 https://doi.org/10.1016/S0042-6989(99)00156-X
  12. D. A. Atchison, M. J. Collins, C. F. Wildsoet, J. Christensen, and M. D. Waterworth, 'Measurement of Monochromatic Ocular Aberrations of Human Eyes as a Function of Accommodation by the Howland Aberroscope Technique,' Vision research, vol. 35, no. 3, pp. 313-323, 1995 https://doi.org/10.1016/0042-6989(94)00139-D
  13. H. C. Howland and B. Howland, 'A subjective method for the measurement of monochromatic aberrations of the eye,' J. Opt. Soc. Am., vol. 67, pp. 1508-1518, 1977 https://doi.org/10.1364/JOSA.67.001508
  14. M. J. Collins, C. F. Wildsoet, and D. A. Atchison, 'Monochromatic Aberrations and Myopia,' Vision research, vol. 35, no. 9, pp. 1157-1163, 1994 https://doi.org/10.1016/0042-6989(94)00236-F
  15. 김상기, 박성찬, '대비감도함수와 변조전달함수를 이 용한 시기능 예측,' 한국광학회지, 제 15권, 5호, pp. 461-467, 2004
  16. N. Brown, 'The change in shape and internal form of the lens of the eye on accommodation,' Exp. Eye Res., vol. 15, no. 4, pp. 441-59, 1973 https://doi.org/10.1016/0014-4835(73)90136-X

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