Timms Chris
Am Orthopt J. 2006;56:180-3. doi: 10.3368/aoj.56.1.180.
The Lees screen is a modification of the Hess screen. It is used to obtain the same information about incomitant strabismus, but using a different method of dissociation. Red and green complementary color dissociation is replaced with a double-sided mirror. The mirror prevents both eyes viewing the same screen simultaneously, although the patient perceives both images seen by the fovea of each eye as if they are projected straight ahead.
李氏屏是对赫氏屏的一种改良。它用于获取有关非共同性斜视的相同信息，但采用了不同的分离方法。红色和绿色互补色分离被双面镜所取代。该镜子可防止双眼同时观看同一个屏幕，尽管患者会将每只眼睛中央凹看到的两个图像都视为好像是直接投射在正前方一样。
