Computerized method of visual acuity testing

Adaptation of the Amblyopia Treatment Study visual acuity testing protocol

Pamela S. Moke, Andrew H. Turpin, Roy W. Beck, Jonathan M Holmes, Michael X. Repka, Eileen E. Birch, Richard W. Hertle, Raymond T. Kraker, Joseph M. Miller, Chris A. Johnson

Research output: Contribution to journalArticle

166 Citations (Scopus)

Abstract

PURPOSE: To report a computerized method for determining visual acuity in children using the Amblyopia Treatment Study visual acuity testing protocol. METHODS: A computerized visual acuity tester was developed that uses a programmed handheld device that uses the Palm operating system (Palm, Inc, Santa Clara, California). The handheld device communicates with a personal computer running a Linux operating system and 17-inch monitor. At a test distance of 3 m, single letters can be displayed from 20/800 to 20/12. A C program on the handheld device runs the Amblyopia Treatment Study visual acuity testing protocol. Using this method, visual acuity was tested in both the right and left eyes, and then the testing was repeated in 156 children age 3 to 7 years at four clinical sites. RESULTS: Test-retest reliability was high (r = .92 and 0.95 for and right and left eyes, respectively), with 88% of right eye retests and 94% of left eye retests within 0.1 logarithm of minimal angle of resolution (logMAR) units of the initial test. The 95% confidence interval for an acuity score was calculated to be the score ± 0.13 logMAR units. For a change between two acuity scores, the 95% confidence interval was the difference ± 0.19 logMAR units. CONCLUSIONS: We have developed a computerized method for measurement of visual acuity. Automation of the Amblyopia Treatment Study visual acuity testing protocol is an effective method of testing visual acuity in children 3 to 7 years of age.

Original languageEnglish (US)
Pages (from-to)903-909
Number of pages7
JournalAmerican Journal of Ophthalmology
Volume132
Issue number6
DOIs
StatePublished - 2001

Fingerprint

Amblyopia
Visual Acuity
Therapeutics
Equipment and Supplies
Confidence Intervals
Automation
Microcomputers
Reproducibility of Results

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Computerized method of visual acuity testing : Adaptation of the Amblyopia Treatment Study visual acuity testing protocol. / Moke, Pamela S.; Turpin, Andrew H.; Beck, Roy W.; Holmes, Jonathan M; Repka, Michael X.; Birch, Eileen E.; Hertle, Richard W.; Kraker, Raymond T.; Miller, Joseph M.; Johnson, Chris A.

In: American Journal of Ophthalmology, Vol. 132, No. 6, 2001, p. 903-909.

Research output: Contribution to journalArticle

Moke, PS, Turpin, AH, Beck, RW, Holmes, JM, Repka, MX, Birch, EE, Hertle, RW, Kraker, RT, Miller, JM & Johnson, CA 2001, 'Computerized method of visual acuity testing: Adaptation of the Amblyopia Treatment Study visual acuity testing protocol', American Journal of Ophthalmology, vol. 132, no. 6, pp. 903-909. https://doi.org/10.1016/S0002-9394(01)01256-9
Moke, Pamela S. ; Turpin, Andrew H. ; Beck, Roy W. ; Holmes, Jonathan M ; Repka, Michael X. ; Birch, Eileen E. ; Hertle, Richard W. ; Kraker, Raymond T. ; Miller, Joseph M. ; Johnson, Chris A. / Computerized method of visual acuity testing : Adaptation of the Amblyopia Treatment Study visual acuity testing protocol. In: American Journal of Ophthalmology. 2001 ; Vol. 132, No. 6. pp. 903-909.
@article{6d33c0ba676c43fbb03bc04cdc6c7256,
title = "Computerized method of visual acuity testing: Adaptation of the Amblyopia Treatment Study visual acuity testing protocol",
abstract = "PURPOSE: To report a computerized method for determining visual acuity in children using the Amblyopia Treatment Study visual acuity testing protocol. METHODS: A computerized visual acuity tester was developed that uses a programmed handheld device that uses the Palm operating system (Palm, Inc, Santa Clara, California). The handheld device communicates with a personal computer running a Linux operating system and 17-inch monitor. At a test distance of 3 m, single letters can be displayed from 20/800 to 20/12. A C program on the handheld device runs the Amblyopia Treatment Study visual acuity testing protocol. Using this method, visual acuity was tested in both the right and left eyes, and then the testing was repeated in 156 children age 3 to 7 years at four clinical sites. RESULTS: Test-retest reliability was high (r = .92 and 0.95 for and right and left eyes, respectively), with 88{\%} of right eye retests and 94{\%} of left eye retests within 0.1 logarithm of minimal angle of resolution (logMAR) units of the initial test. The 95{\%} confidence interval for an acuity score was calculated to be the score ± 0.13 logMAR units. For a change between two acuity scores, the 95{\%} confidence interval was the difference ± 0.19 logMAR units. CONCLUSIONS: We have developed a computerized method for measurement of visual acuity. Automation of the Amblyopia Treatment Study visual acuity testing protocol is an effective method of testing visual acuity in children 3 to 7 years of age.",
author = "Moke, {Pamela S.} and Turpin, {Andrew H.} and Beck, {Roy W.} and Holmes, {Jonathan M} and Repka, {Michael X.} and Birch, {Eileen E.} and Hertle, {Richard W.} and Kraker, {Raymond T.} and Miller, {Joseph M.} and Johnson, {Chris A.}",
year = "2001",
doi = "10.1016/S0002-9394(01)01256-9",
language = "English (US)",
volume = "132",
pages = "903--909",
journal = "American Journal of Ophthalmology",
issn = "0002-9394",
publisher = "Elsevier USA",
number = "6",

}

TY - JOUR

T1 - Computerized method of visual acuity testing

T2 - Adaptation of the Amblyopia Treatment Study visual acuity testing protocol

AU - Moke, Pamela S.

AU - Turpin, Andrew H.

AU - Beck, Roy W.

AU - Holmes, Jonathan M

AU - Repka, Michael X.

AU - Birch, Eileen E.

AU - Hertle, Richard W.

AU - Kraker, Raymond T.

AU - Miller, Joseph M.

AU - Johnson, Chris A.

PY - 2001

Y1 - 2001

N2 - PURPOSE: To report a computerized method for determining visual acuity in children using the Amblyopia Treatment Study visual acuity testing protocol. METHODS: A computerized visual acuity tester was developed that uses a programmed handheld device that uses the Palm operating system (Palm, Inc, Santa Clara, California). The handheld device communicates with a personal computer running a Linux operating system and 17-inch monitor. At a test distance of 3 m, single letters can be displayed from 20/800 to 20/12. A C program on the handheld device runs the Amblyopia Treatment Study visual acuity testing protocol. Using this method, visual acuity was tested in both the right and left eyes, and then the testing was repeated in 156 children age 3 to 7 years at four clinical sites. RESULTS: Test-retest reliability was high (r = .92 and 0.95 for and right and left eyes, respectively), with 88% of right eye retests and 94% of left eye retests within 0.1 logarithm of minimal angle of resolution (logMAR) units of the initial test. The 95% confidence interval for an acuity score was calculated to be the score ± 0.13 logMAR units. For a change between two acuity scores, the 95% confidence interval was the difference ± 0.19 logMAR units. CONCLUSIONS: We have developed a computerized method for measurement of visual acuity. Automation of the Amblyopia Treatment Study visual acuity testing protocol is an effective method of testing visual acuity in children 3 to 7 years of age.

AB - PURPOSE: To report a computerized method for determining visual acuity in children using the Amblyopia Treatment Study visual acuity testing protocol. METHODS: A computerized visual acuity tester was developed that uses a programmed handheld device that uses the Palm operating system (Palm, Inc, Santa Clara, California). The handheld device communicates with a personal computer running a Linux operating system and 17-inch monitor. At a test distance of 3 m, single letters can be displayed from 20/800 to 20/12. A C program on the handheld device runs the Amblyopia Treatment Study visual acuity testing protocol. Using this method, visual acuity was tested in both the right and left eyes, and then the testing was repeated in 156 children age 3 to 7 years at four clinical sites. RESULTS: Test-retest reliability was high (r = .92 and 0.95 for and right and left eyes, respectively), with 88% of right eye retests and 94% of left eye retests within 0.1 logarithm of minimal angle of resolution (logMAR) units of the initial test. The 95% confidence interval for an acuity score was calculated to be the score ± 0.13 logMAR units. For a change between two acuity scores, the 95% confidence interval was the difference ± 0.19 logMAR units. CONCLUSIONS: We have developed a computerized method for measurement of visual acuity. Automation of the Amblyopia Treatment Study visual acuity testing protocol is an effective method of testing visual acuity in children 3 to 7 years of age.

UR - http://www.scopus.com/inward/record.url?scp=0035209268&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035209268&partnerID=8YFLogxK

U2 - 10.1016/S0002-9394(01)01256-9

DO - 10.1016/S0002-9394(01)01256-9

M3 - Article

VL - 132

SP - 903

EP - 909

JO - American Journal of Ophthalmology

JF - American Journal of Ophthalmology

SN - 0002-9394

IS - 6

ER -