SUPPRESSION OF FIXATIONAL SACCADES IN STRABISMIC AND ANISOMETROPIC AMBLYOPIA
SUPPRESSION OF FIXATIONAL SACCADES IN STRABISMIC AND ANISOMETROPIC AMBLYOPIA
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DOI：
10.1159/000264983
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发表时间：
1979-01-01
影响因子：
2.1
通讯作者：
STARK, L
中科院分区：
文献类型：
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作者：
CIUFFREDA, KJ;KENYON, RV;STARK, L
患有斜视的个体在弱视眼在光中的单眼注视期间经常表现出大的注视扫视对（扫视侵入）。有两种情况下，扫视入侵频率可以显着降低。当被指示在光中存在可见目标时“保持眼睛稳定”时，扫视侵入被抑制，眼睛位置保持在目标的几度内。弱视眼显然利用矫正漂移来帮助保持位置。当被要求在完全黑暗的环境中“注视”时，这种侵入性的模式被一种类似于眼球震颤的模式所取代。弱视眼的扫视侵入需要存在可见的目标来产生，此外，在这种情况下，“视网膜外信号”参与了眼睛位置的维持。无斜视的弱视或持续性斜视弱视伴间歇性急跳性眼球震颤的患者在灯光下执行“保持"指令时，眼跳也会受到抑制。
Individuals with strabismus frequently exhibit large fixational saccadic pairs (saccadic intrusions) during monocular fixation with the amblyopic eye in the light. Two conditions were found in which the saccadic intrusion frequency could be markedly reduced. When instructed to ''hold the eye steady'' in the presence of a visible target in the light, saccadic intrusions were suppressed and eye position maintained within a few degrees of the target. Corrective drift was apparently used by the amblyopic eye to aid in position maintenance. When instructed to ''fixate'' in complete darkness, the intrusive pattern was replaced by a jerk nystagmus-like pattern. Saccadic intrusions in amblyopic eyes require the presence of a visible target for their generation, and additionally, that ''extraretinal signals'' were involved in maintenance of eye position under this condition. Saccades could also be suppressed during the ''hold'' command in the light by patients having amblyopia without strabismus or constant strabismus amblyopia with intermittent jerk nystagmus.