An automatic holographic adaptive phoropter

Babak Amirsolaimani, N. Peyghambarian, Jim Schwiegerling, Arkady Bablumyan, Nickolaos Savidis, Gholam Peyman

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Phoropters are the most common instrument used to detect refractive errors. During a refractive exam, lenses are flipped in front of the patient who looks at the eye chart and tries to read the symbols. The procedure is fully dependent on the cooperation of the patient to read the eye chart, provides only a subjective measurement of visual acuity, and can at best provide a rough estimate of the patient's vision. Phoropters are difficult to use for mass screenings requiring a skilled examiner, and it is hard to screen young children and the elderly etc. We have developed a simplified, lightweight automatic phoropter that can measure the optical error of the eye objectively without requiring the patient's input. The automatic holographic adaptive phoropter is based on a Shack-Hartmann wave front sensor and three computercontrolled fluidic lenses. The fluidic lens system is designed to be able to provide power and astigmatic corrections over a large range of corrections without the need for verbal feedback from the patient in less than 20 seconds.

Original languageEnglish (US)
Title of host publicationBiosensing and Nanomedicine X
EditorsManijeh Razeghi, Massoud H. Agahi, Massoud H. Agahi, Hooman Mohseni
ISBN (Electronic)9781510611610
StatePublished - 2017
EventBiosensing and Nanomedicine X 2017 - San Diego, United States
Duration: Aug 6 2017Aug 7 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherBiosensing and Nanomedicine X 2017
Country/TerritoryUnited States
CitySan Diego


  • Fluidic lens
  • Holographic Optical Element
  • Phoropter

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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