Miwa T, Tokoro T
Department of Ophthalmology, Tsuchiura Kyodo General Hospital, Japan.
Acta Ophthalmol (Copenh). 1993 Dec;71(6):819-24. doi: 10.1111/j.1755-3768.1993.tb08606.x.
We evaluated the dark focus of accommodation, referred to as tonic accommodation, in 60 young hyperopic subjects, 20 with and 20 without accommodative esotropia, and 20 with hyperopic anisometropia. We measured the distance, dark, and cycloplegic refractive errors by the Nidek Autorefractometer AR1600. The difference between dark and cycloplegic refractive errors was defined as the dark focus. The dark focus was significantly larger in esotropic eyes than in non-esotropic eyes, despite similar cycloplegic refractive errors in both types of eyes, suggesting that tonic accommodation may be associated with ocular position. The dark focus was similar in eyes of the same subjects with hyperopic anisometropia and also in normal and amblyopic eyes, suggesting that tonic accommodation is similar in both eyes in subjects with anisometropia and amblyopia.
我们评估了60名年轻远视受试者的调节暗焦点（即张力性调节），其中20名患有调节性内斜视，20名未患调节性内斜视，20名患有远视性屈光参差。我们使用尼德克自动验光仪AR1600测量了远距离、暗环境及睫状肌麻痹下的屈光不正。暗环境下与睫状肌麻痹下屈光不正的差值定义为暗焦点。尽管两类眼睛的睫状肌麻痹屈光不正相似，但内斜视眼的暗焦点明显大于非内斜视眼，这表明张力性调节可能与眼位有关。患有远视性屈光参差的同一受试者的双眼暗焦点相似，正常眼和弱视眼的暗焦点也相似，这表明屈光参差和弱视受试者双眼的张力性调节相似。
