Retinoscopic measurement of the refractive state of the rat

Donald O. Mutti, Karla Zadnik, Chris A. Johnson, Howard C. Howland, Christopher J Murphy

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Using retinoscopy, we measured the refractive state of 96 eyes of three different strains of rats: albino Sprague-Dawley, Royal College of Surgeons (RCS) with and without inherited retinal dystrophy, and lean and obese varieties of Zucker rats. Contrary to previous reports, we do not find consistent high hyperopia in the rat, but rather refractions that range from near emmetropia (-0.12D) to extreme hyperopia (+18.95D). This range of refractive errors suggests a poorly developed emmetropization mechanism in the rat, and that individual refractions should be performed on animals utilized in experiments where refractive state is critical.

Original languageEnglish (US)
Pages (from-to)583-586
Number of pages4
JournalVision Research
Issue number3
StatePublished - 1992
Externally publishedYes


  • Artifact of retinoscopy
  • Emmetropization
  • Optics
  • Rat
  • Refractive error
  • Retinoscopy

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems


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