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검안렌즈의 장착상태에 대한 연구

Study on Mounting Status of Trial Case Lenses

  • 조현국 (강원대학교 안경광학과) ;
  • 문병연 (강원대학교 안경광학과)
  • 투고 : 2013.11.01
  • 심사 : 2013.12.14
  • 발행 : 2013.12.31

초록

목적: 검안렌즈에서 렌즈마운트에 대한 렌즈의 장착상태를 알아보고자 하였다. 방법: 국내에서 유통되고 있는 임의의 검안렌즈에 대해 렌즈마운트의 기하중심과 렌즈의 광학중심사이 거리, 축 표시마크와 실제 축사이 각도의 차이를 조사하고 국제규격과 비교하였다. 결과: 일부 렌즈에서 렌즈마운트의 기하중심에서 발생되는 프리즘 굴절력, 원주렌즈의 축 표시마크와 실제 축사이 각도 차이가 국제규격의 허용오차를 초과하는 경우가 있었다. 결론: 정확한 시력검사를 위해 검안렌즈는 좀 더 정밀한 제조가 요구되며, 이를 위해 철저한 품질관리가 필요할 것으로 생각된다.

Purpose: In this study, the mounting status of trial case lens was investigated. Methods: We measured distances between geometric center of lens mount and optical center of lens and angle deviations between axis mark on lens and real axis using arbitrary trial case lens sets distributed in Korea, and then, compared those results with international standards. Results: In some of lenses, the prismatic power on geometric center of lens mount and the angle deviations between axis mark and real axis of cylindrical lens were out of tolerance according international standards. Conclusions: The more precise control of the manufacturing process and more thorough quality control for trial case lenses will be required to offer an accurate vision test.

키워드

참고문헌

  1. Sung PJ. Optometry, 6th Ed. Seoul: Daihak publishing company, 2008;391-394.
  2. KS P 4402: Test lens set, Korean Industrial Standards Committee, Seoul, 2002.
  3. ISO 9801: Ophthalmic instruments-Trial case lenses, International Organization for Standardization, Geneva, 1997.
  4. JIS T4402: Ophthalmic instruments -Trial case lenses, Japanese Industrial Standards Committee, Tokyo, 2002.
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피인용 문헌

  1. Evaluation of Reliability for Spectacles Prescription Using Auto Phoropter and Trial Lens vol.24, pp.1, 2013, https://doi.org/10.14479/jkoos.2019.24.1.61