Rosenfield M, Ciuffreda K J, Rosen J
Department of Vision Sciences, SUNY/State College of Optometry, NY 10010.
J Am Optom Assoc. 1992 Sep;63(9):614-8.
The control of accommodation is an essential requirement during the clinical optometric assessment of distance vision. Accordingly, the aim of the present study was to examine the steady-state accommodative response during a number of conventional clinical procedures carried out at a viewing distance of 6m (20 feet). Accommodation was measured subjectively to Snellen letters using a Hartinger coincidence optometer during distance viewing, simulated retinoscopy and following the introduction of cylindrical and prismatic lenses in 13 visually-normal, young adults. No significant change in the mean accommodative response was induced by any of the techniques described, with subjects exhibiting a lead of accommodation of approximately 0.25D for all conditions. The results demonstrate the robustness of accommodation to apparently substantial changes in stimulus conditions.
在临床验光评估远视力时，调节控制是一项基本要求。因此，本研究的目的是在6米（20英尺）视距下进行的一些传统临床检查过程中，检测稳态调节反应。在13名视力正常的年轻成年人进行远距视力检查、模拟检影以及引入柱面镜和棱镜后，使用哈廷格重合式验光仪对斯内伦视力表字母进行主观调节测量。所描述的任何技术均未引起平均调节反应的显著变化，所有情况下受试者的调节超前约为0.25D。结果表明，调节对刺激条件的明显大幅变化具有稳健性。
