Normative Values for Near and Distance Clinical Tests of Stereoacuity
- 1 October 2016
- journal article
- research article
- Published by Taylor & Francis Ltd in Strabismus
- Vol. 24 (4), 169-172
- https://doi.org/10.1080/09273972.2016.1242636
Abstract
Purpose: Extensive literature exists on normative stereoacuity values for younger children, but there is less information about normative stereoacuity in older children/adults. Individual stereotests cannot be used interchangeably—knowing the upper limit of normality for each test is important. This report details normative stereoacuity values for 5 near/distance stereotests drawn from a large sample of participants aged 16-40 years, across 3 studies. Methods: Participants (n=206, mean age 22.18±5.31 years) were administered the following stereotests: TNO, Preschool Randot, Frisby, Distance Randot, and Frisby-Davis 2. Medians and upper limits were calculated for each test. Results: Upper limits for each stereotest were as follows: TNO (n=127, upper limit=120” arc), Preschool Randot (PSR, n=206, upper limit=70” arc), Frisby (n=206, upper limit=40” arc), Distance Randot (n=127, upper limit=160” arc), and Frisby-Davis 2 (n=109, upper limit=25” arc). Conclusions: Normative values for each stereotest are identified and discussed with respect to other studies. Potential sources of variation between tests, within testing distances, are also discussed.Keywords
Funding Information
- Chief Scientist Office (ETM\375)
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