本文收集台大眼科自民國七十七年元月至十二月一年間,共一千名兒童接受Titmus和TNO立體測試圖檢查的結果。年齡自二歲至七歲不等,其中正常組300人、斜弱視組500人、屈光異常組200人。正常組的幼童對TNO測試圖的反應比Titmus和一般測視力表檢查較感興趣。三百名內斜視患者的立體感均不良,但若內斜角度不大,而兩眼視力都不錯者,則Titmus測試圖所測出來的秒數比TNO測試圖所得者好很多。間歇性外斜視和兩眼不等視弱視的TNO與Titmus可看到之秒數差不多。影響近距離視力的高度屈折異常,會影響TNO與Titmus的判讀。
We collected the data of 1000 children who received TNO, Titmus and visual acuity examination in the past one year. Their ages were from 2 years old to 7 years old. They were divided into three groups. The first group was normal group consisting of 300 children. The second group consisted of 500 children who had amblyopia or strabismus. The last group of 200 children had significant refractive errors. We found that the children preferred TNO test to Titmus by being cooperative more frequently on the TNO test than on the Titmus test, particularly in the lower age range. Failure to pass the TNO test at the 240 seconds of arc disparity level yielded an excellent screening criterion. The TNO test appears not a reliable screening test for intermittent exotropia, esophoria or exophoria, slight amblyopia and low refractive errors.