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使用视觉搜索测量对比度增加和减少处理在已确定的青光眼中.

Vanessa Thien Sze Tang1,2, Andrew Turpin2,3, William Huxley Morgan2,4

  • 1Department of Optometry and Vision Science, School of Allied Health, The University of Western Australia, Perth, Western Australia, Australia.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)
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PubMed
概括
此摘要是机器生成的。

这项研究发现,随着视野损失的进展,光瘤患者的视觉通路的开启和关闭都显示出类似的性能下降. 晚期玻璃眼和中部视力丧失对这两种途径的响应时间显著减慢.

关键词:
在上下路径上/下路径.对比度下降,对比度下降.对比度的增加,对比度的增加.玻璃眼 glaucoma 玻璃眼 玻璃眼 玻璃眼 玻璃眼视觉功能 视觉功能 视觉功能视觉搜索 视觉搜索 视觉搜索

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科学领域:

  • 眼科医生 眼科 眼科
  • 神经科学是一个神经科学.
  • 视觉科学 视觉科学

背景情况:

  • 视觉处理依赖于启动和关闭视网膜质细胞 (RGCs) 来获得明暗信息.
  • 实验性玻璃眼模型表明,OFF RGCs具有选择性的脆弱性.
  • 这项研究调查了人类玻璃眼的差异性通路性能.

研究的目的:

  • 为了确定视觉通路的开启和关闭是否表现出不同速度的性能下降,而视觉场的严重程度在绿眼中增加.
  • 评估青光眼严重程度和视野损失模式对视觉处理速度的影响.

主要方法:

  • 106名患有青光眼的参与者在iPad上执行了视觉搜索任务.
  • 测量了对比度增加和减少的响应时间.
  • 使用标准周边测量 (指南针周边测量,ZEST-Fast策略) 来评估视野.

主要成果:

  • 较慢的响应时间与较大的视野损失相关.
  • 开启和关闭通路的响应时间随着视野平均偏差的恶化,以相似的速度下降.
  • 与中央节省缺陷相比,对ON和OFF刺激的中心视野损失与显著较慢的响应时间有关.

结论:

  • 这些发现不支持在人类绿眼中选择性OFF RGC损失.
  • 青光眼的严重程度和中部视力丧失明显影响视觉处理速度.
  • 无论是ON还是OFF路径,都显示出在晚期青光瘤中同等的性能降低.