Eye test using the Snellen chart. The visual acuity (sharpness of vision) of each eye is checked by reading letters of different sizes from the same distance. Refraction testing (using lenses of different strengths) may be carried out to determine what glasses or contact lenses are needed.
| px | px | dpi | = | cm | x | cm | = | MB |
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Creative#:
TOP10205523
Source:
達志影像
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RM
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須由TPG 完整授權
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No
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