McGill E, Erickson P
Professional Products Division, Bausch & Lomb, Inc., Rochester, New York.
Am J Optom Physiol Opt. 1988 Aug;65(8):619-26. doi: 10.1097/00006324-198808000-00005.
One of the advantages suggested for contact lens bifocals over monovision treatment of presbyopia is that there may be less impairment of binocular function. We evaluated nearpoint stereoposis on the Titmus stereotest for 10 presbyopic patients. Testing was done under five conditions; monovision and binocular correction with each of four marketed simultaneous bifocal contact lenses. Simultaneous vision bifocals tested produced at least as much reduction in stereopsis as monovision compared to baseline spectacle correction. Repeat testing of bifocal stereopsis with best near over-refraction suggested that a substantial portion of the stereo reduction could be attributed to insufficient effective adds with the bifocal contacts.
与老视的单眼视治疗相比，角膜接触镜双焦点镜片的一个优势在于，其对双眼功能的损害可能更小。我们对10名老视患者进行了Titmus立体视测试，以评估近点立体视。测试在五种条件下进行：单眼视以及使用四种市售同步双焦点角膜接触镜分别进行双眼矫正。与基线框架眼镜矫正相比，测试的同步视双焦点镜片产生的立体视降低程度至少与单眼视一样多。用最佳近附加验光对双焦点立体视进行重复测试表明，立体视降低的很大一部分可归因于双焦点角膜接触镜的有效附加度数不足。
