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BMMR. 2009; 12(4): 143-146


Comparison of TNO and titmus stereoacuity tests in healthy children

Dogan Ceyhan,Tarkan Mumcuoglu,Fatih M. Mutlu, H. Ibrahim Altinsoy.

Abstract
We purposed to evaluate the results of TNO and Titmus stereoacuity tests in ophthalmo- logically healthy children. Methods: Sixty-two chil- dren between 4 and 14 years of age, with no ocular pathology were prospectively assessed using Titmus and TNO stereoacuity tests. Results: Fourteen of 62 patients (% 22) were found to be stereo negative with TNO test. Of those 14 chil- dren, the mean stereoacuity score was 110.71 secs of arc (between 40 and 400 secs of arc) with Titmus test. Forty-eight children answering the TNO test have an average stereoacuity level of 153.75 secs of arc with TNO and a stereoacuity of 46.67 secs of arc with Titmus test. All children responded to the Titmus test and their average stereoacuity score was 61.13 secs of arc. Conclusions: Titmus test was easier to apply to children and seems more efficient to show the existence of stereopsis in healthy chil- dren than the TNO test. Any clinician, delivering stereoacuity tests should establish the standard conditions for his/her examination and should seek for a more efficient and practical stereoacuity test or still better, tests.

Key words: Amblyopia, stereoacuity, titmus, TNO, visual screening



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