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A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
A61B3/125—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes with contact lenses