Measurement of the single-pass modulation transfer function and simulation of the retinal image of the human eye with a newly developed point spread function analysis system

Katsuhiko Kobayashi, Masahiro Shibutani, Gaku Takeuchi, Kazuhiko Ohnuma, Yoichi Miyake, Kazuno Negishi, Kenji Ohno, Tohru Noda

Research output: Contribution to journalConference article

Abstract

We developed a new point spread function (PSF) analysis system (PSFAS) to study the optical system of the human eye. An infrared point light source is projected on the retina, then the single-pass modulation transfer function (MTF) is derived from the image of incoherent polarized reflection double-pass PSF measured by PSFAS: The retinal images and the contrast characteristics of various sized Landolt's rings then are simulated with the single-pass PSF calculated by the single-pass MTF. The visual acuity (VA) is predicted from the retinal images. The single-pass MTF and the contrast characteristics of aged subjects were clearly lower than those of a young subject in mid-frequency, though the cut-off frequency was similar in the two subjects. The predicted VA from the simulated retinal images agreed with the actual VA in normal subjects and in those with myopic astigmatism. This becomes a useful system for elucidating the optical characteristics of the human eye. In addition, the visual simulation obtained using this system is clinically useful for objectively evaluating visual function.

Original languageEnglish
Pages (from-to)112-119
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4951
DOIs
Publication statusPublished - 2003
EventPROGRESS IN BIOMEDICAL OPTICS AND IMAGING: Opthalmic Technologies XIII - San Jose, CA, United States
Duration: 2003 Jan 252003 Jan 26

Keywords

  • Contrast
  • Incoherent
  • MTF
  • Point spread function
  • Polarization
  • Retinal image

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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