Restoring vision at the fovea.

Restoring vision at the fovea.
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恢复中央凹的视力。

DOI:
10.1016/j.cobeha.2019.10.003
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发表时间:
2019-12
影响因子:
5
通讯作者:
McGregor JE
McGregor JE
中科院分区:
心理学2区
文献类型:
--
作者:
McGregor JE

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在人类中,高质量、高敏锐度的视觉体验是由中央凹介导的,中央凹是包含注视点的视网膜的微小的、专门的补丁。尽管如此,视力恢复策略通常在没有中央凹的动物模型中开发。虽然电子假肢已经获得监管机构的批准,但它们还未能恢复患者的高质量,高敏锐度视力。临床前开发的方法包括再生细胞疗法、光遗传学和化学光敏剂。所有的视网膜视力恢复治疗都需要重新激活已经失去感光细胞输入的内层视网膜,并且可以在行为水平上解释恢复的信号。更加重视在中央凹处解决这些挑战可能会加速高质量视力恢复的进展。
In humans high quality, high acuity visual experience is mediated by the fovea, a tiny, specialized patch of retina containing the locus of fixation. Despite this, vision restoration strategies are typically developed in animal models without a fovea. While electrical prostheses have been approved by regulators, as yet they have failed to restore high quality, high acuity vision in patients. Approaches under pre-clinical development include regenerative cell therapies, optogenetics and chemical photosensitizers. All retinal vision restoration therapies require reactivation of inner retina that has lost photoreceptor input and that the restored signals can be interpreted at a behavioural level. A greater emphasis on tackling these challenges at the fovea may accelerate progress toward high quality vision restoration.
视网膜下假体中的支柱电极的优化,以增强靶向神经元的邻近性。
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