Daw N W
Department of Ophthalmology and Visual Science, Yale University Medical School, New Haven, Conn, USA.
Arch Ophthalmol. 1998 Apr;116(4):502-5. doi: 10.1001/archopht.116.4.502.
During the past 20 years, basic science has shown that there are different critical periods for different visual functions during the development of the visual system. Visual functions processed at higher anatomical levels within the system have a later critical period than functions processed at lower levels. This general principle suggests that treatments for amblyopia should be followed in a logical sequence, with treatment for each visual function to be started before its critical period is over. However, critical periods for some visual functions, such as stereopsis, are not yet fully determined, and the optimal treatment is, therefore, unknown. This article summarizes the current extent of our knowledge and points to the gaps that need to be filled.
在过去20年里，基础科学研究表明，视觉系统发育过程中，不同的视觉功能存在不同的关键期。该系统中在较高解剖水平处理的视觉功能，其关键期比在较低水平处理的功能要晚。这一普遍原则表明，弱视治疗应按合理顺序进行，每种视觉功能的治疗应在其关键期结束前开始。然而，一些视觉功能（如立体视觉）的关键期尚未完全确定，因此最佳治疗方法也未知。本文总结了我们目前的知识范围，并指出了有待填补的空白。
