op.tom.e.trist
n.（名词）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
