Real Depth vs Randot Stereotests

David A. Leske, Eileen E. Birch, Jonathan M. Holmes

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


Purpose: To compare the performance of real depth and Randot stereotests in strabismic and nonstrabismic patients. Design: Observational case series. Methods: Stereoacuity was tested in 182 patients with a variety of strabismic conditions, using the Frisby-Davis 2 (FD2) distance stereotest, the near Frisby (nF) (both real depth tests), the Preschool Randot (nR), and Distance Randot (dR) tests (both based on Polaroid vectographs). Results: Patients appreciated finer disparities with the nF test than the nR test at near and with the FD2 test than the dR test at distance. Conclusions: The type of stereotest influences measurable thresholds, and the results from different tests are not interchangeable. The choice of test should depend on the question being asked; nF and FD2 would be appropriate for determining presence or absence of stereopsis and best measurable stereopsis. The more rigorous Randot tests would be appropriate for determining subtle changes.

Original languageEnglish (US)
Pages (from-to)699-701
Number of pages3
JournalAmerican Journal of Ophthalmology
Issue number4
StatePublished - Oct 2006
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology


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