Moidell B, Steinbach M J, Ono H
Hospital for Sick Children, Toronto, Ontario, Canada.
Invest Ophthalmol Vis Sci. 1988 Aug;29(8):1348-51.
In normal binocular vision the origin of judgments of visual direction is the egocenter located on the median plane of the head, midway between the two eyes. For children enucleated at an early age there is abrupt cessation of binocular input to the visual cortex. We evaluated the effect of early removal of one eye on the location of the egocenter, comparing the results in enucleated children to normal binocular children tested monocularly. We found a significant shift of the egocenter towards the remaining eye of the enucleates that was unrelated to the age at enucleation. At least up to 4 years of age, egocenter location is plastic and can be modified by the complete monocularity imposed by enucleation.
在正常的双眼视觉中，视觉方向判断的原点是位于头部正中平面、两眼中间的自我中心。对于幼年摘除眼球的儿童，视觉皮层的双眼输入会突然停止。我们评估了早期摘除一只眼睛对自我中心位置的影响，将摘除眼球儿童的结果与单眼测试的正常双眼儿童的结果进行比较。我们发现，自我中心显著向摘除眼球儿童的另一只眼睛偏移，且这与摘除眼球时的年龄无关。至少在4岁之前，自我中心位置具有可塑性，可因摘除眼球导致的完全单眼视觉而改变。
