Yap Y L, Bedell H E, Abplanalp P L
Am J Optom Physiol Opt. 1986 Apr;63(4):259-64.
Normal subjects were trained to look to the side of a small, flickering target in order to make this target disappear within the physiological blind spot of the right eye. Subsequently, subjects aimed the eye more eccentrically when the target was nearer and less eccentrically when the target was farther than when it was at the training distance of 1.5 m. Thus, the eccentric eye aiming of our subjects represented a compromise between looking to the side of the target by a constant visual angle and by a constant lateral extent. We propose that patients who lose central vision bilaterally may similarly err in trying to aim the diseased macula to one side of targets by a constant visual angle, impeding their ability to use a single, nonfoveal region effectively.
正常受试者接受训练，看向一个小的闪烁目标的一侧，以使该目标在右眼的生理盲点内消失。随后，当目标较近时，受试者将眼睛瞄准得更偏离中心；当目标较远时，瞄准得较不偏离中心，而不是在1.5米的训练距离时那样。因此，我们受试者的偏离中心的眼睛瞄准代表了在以恒定视角和以恒定横向范围看向目标一侧之间的一种折衷。我们提出，双侧失去中心视力的患者在试图以恒定视角将患病的黄斑瞄准目标的一侧时可能同样会出错，从而妨碍他们有效利用单个非中央凹区域的能力。
