Normative Values for Near and Distance Clinical Tests of Stereoacuity



Piano, Marianne EF, Tidbury, Laurence P and O'Connor, Anna R ORCID: 0000-0002-0376-9670
(2016) Normative Values for Near and Distance Clinical Tests of Stereoacuity. STRABISMUS, 24 (4). pp. 169-172.

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Abstract

<h4>Purpose</h4>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.<h4>Methods</h4>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.<h4>Results</h4>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).<h4>Conclusions</h4>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.

Item Type: Article
Uncontrolled Keywords: Normative, stereopsis, stereotest
Depositing User: Symplectic Admin
Date Deposited: 24 Apr 2017 06:52
Last Modified: 19 Jan 2023 07:05
DOI: 10.1080/09273972.2016.1242636
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007093