| 摘要 |
A corneal lens (1) is provided with a measurement electrode (4), a portion of which being flush with the concave surface of the lens or protruding from said surface, in such a manner to be in service position directly in contact with the cornea of the eye. The convex surface of the lens comprises pins (2) to maintain open the eyelids. This device allows to obtain without any inconvenient for the subject an electroretinogram usable for the ophthalmologist's diagnostic.
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