| 摘要 |
The present invention contemplates a refraction system to integrate the objective and subjective measurement into a single instrument. The present invention also contemplates a refraction system with open-field and binocular viewing to overcome instrument myopia and to mimic viewing experience of a phoropter. The present invention further contemplates a refraction system employing a pair of optical trombones to eliminate the need of flipping plurality sets of trial lenses for defocus power correction.
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