发明授权
US4728183A Ophthalmic lens for observing the fundus of the eye 失效
用于观察眼底的眼镜

Ophthalmic lens for observing the fundus of the eye
摘要:
An ophthalmic lens utilized for observing the fundus of an eye using through the lens illumination and for delivering a focused laser beam to the fundus includes a contact lens and an aspheric entry lens. In combination, the lenses provide an aerial image of the fundus anterior to the entry lens.
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