| 单词 | 视网膜上 |
| 释义 | 〔astigmatism〕A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.乱视，像散：一种视力缺陷，眼球表示面一点或多点折射时屈光不均，通常为角膜，使光线不能清晰地在视网膜上聚为一个焦点，从而导致视力模糊不清〔myopia〕A visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than on it; nearsightedness. Also called short sight 近视：一种视觉缺陷，由于它们的图象在视网膜前聚焦而不是在视网膜上，所以远处物体看起来模糊不清的 也作 short sight〔visual〕a visual organ; visual receptors on the retina.视觉器官；视网膜上的视觉感受器 |
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