Larson W L
School of Optometry, University of Montreal, Quebec, Canada.
Optom Vis Sci. 1990 Mar;67(3):196-200. doi: 10.1097/00006324-199003000-00009.
The assumption that vergence adaptation to a prism could only take place during single binocular vision was investigated by having subjects wear a prism while fusion was dissociated. Adaptation was evaluated by its effect on lateral heterophoria. Dissociation and measurement of heterophoria were by means of an automated version of Duane's screen and parallax test. A preliminary investigation with 37 subjects fixating at 6 m while wearing 4 delta base-out and with 33 other subjects fixating at 50 cm while wearing 3 delta base-in showed that at least 25% adapted to the prism. Results of an investigation with 2 subjects fixating at 6 m (4 delta base-out and base-in) and with 3 subjects fixating at 50 cm (3 delta base-in) are presented as evidence that prism adaptation can take place. It was also found that the power of the added prism could just as well be provided by the phoria test's variable prism. In other words, there is a possibility that adaptation will occur when heterophoria is measured with a variable prism.
通过让受试者在融合分离时佩戴棱镜，研究了聚散适应棱镜只能在单眼双眼视觉期间发生的假设。通过其对水平隐斜的影响来评估适应情况。隐斜的分离和测量采用了杜安氏屏和视差测试的自动化版本。对37名受试者在佩戴4△底向外棱镜时注视6米处，以及另外33名受试者在佩戴3△底向内棱镜时注视50厘米处进行的初步调查表明，至少25%的人适应了棱镜。给出了对2名受试者注视6米处（4△底向外和底向内）以及3名受试者注视50厘米处（3△底向内）的调查结果，作为棱镜适应可以发生的证据。还发现，附加棱镜的屈光力也可以由隐斜测试的可变棱镜提供。换句话说，当用可变棱镜测量隐斜时，有可能发生适应。
