Late 19th century ophthalmoscopy tool. Ophthalmoscopic tools are used to examine the interior of the eye and measure its optical properties. This is a phoropter dating from 1880. Designed by the French ophthalmologist Emile Javal (1839-1907),this instrument is used to measure refraction within the eye and compare different lenses used during sight testing to determine a patient's optical prescription. This instrument was made by the French Roulot company | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Thomas, Mark |
Bildgröße: | 6144 px × 4096 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |