| 单词 | 视力缺陷 |
| 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〔eyestrain〕Pain and fatigue of the eyes, often accompanied by headache, resulting from prolonged use of the eyes, uncorrected defects of vision, or an imbalance of the eye muscles.眼下疲劳：眼睛的疼痛和疲乏，常伴有头痛，长久使用眼睛所致，或因未矫正的视力缺陷或眼肌的不平衡〔optometrist〕A person who is professionally trained and licensed to examine the eyes for visual defects, diagnose problems or impairments, and prescribe corrective lenses or provide other types of treatment.验光师，配镜师：经过专业训练并领取执照以专门从事对眼睛的视力缺陷、疑难杂症 或损害情况进行检查的人，他还负责提供有助视力改善的眼镜或其他类型的治疗手段 |
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