视光学；视力与眼保健的技艺和科学。
视光学；视力与眼保健的技艺和科学。；验光配镜(法)；[医] 视力测定法
视光学；视力与眼保健的技艺和科学。
The art and science of vision and eye care.
验光师的实践活动
the practice of an optometrist
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