Performance of amblyopic children on printed contrast sensitivity test charts

Helen Glover, Suzanne Bird, Keng Hung Maurice Yap

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Forty consecutive amblyopic patients between the ages of 3 and 12 years attending the Orthoptic Clinic for assessment and treatment were tested on the AO Contrast Sensitivity System [Arden grating test (AGT)] and the VISTECH Contrast Sensitivity Charts. Recordings were unsuccessful in more than 50% of these patients on both test systems. Of those who could successfully complete the AGT, false negative results were noted in 62.5% of the amblyopic eyes and false positive results were found in 25% of the normal fellow eyes. On the near VISTECH chart, all normal and amblyopic eyes produced results that were outside the specified limit of normality. On the distance VISTECH chart, 25% of the normal fellow eyes gave false positive results and 25% of the amblyopic eyes gave false negative results. From these findings, it is doubtful whether either test system has a role in the routine clinical assessment of amblyopia.
Original languageEnglish
Pages (from-to)361-366
Number of pages6
JournalOptometry and Vision Science
Issue number5
Publication statusPublished - 1 Jan 1987
Externally publishedYes


  • Amblyopic children
  • Printed contrast sensitivity charts

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry

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