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Publication of GEU2000683YpublicationCriticalpatent/GEU2000683Y/en
1. Technical Result Increase in efficiency. 2. Essence A device comprises a body and a test-object, whereas, the test-object is made in the form of a figure formed with four symmetrically contacting curved lines, the longitudinal axes of which are perpendicular. 3. Field of Application Ophthalmology. Figures: 1
GEAU19990008051998-12-221999-12-15Device for Training of Eyesight
GEU2000683Y
(en)