Couper's Ophthalmoscope
 Catalogue Number: 1137 Couper's Ophthalmoscope Category: Equipment Sub-Category: Ophthalmoscope Designer/inventor: John Couper Year Of Publication/Manufacture: c1880 Time Period: 19th C Place Of Publication/Manufacture: London, UK Publisher/Manufacturer: Curry & Paxton Description Of Item: Non-illuminated ophthalmoscope, direct & indirect, with +13 DS condensing lens, in case. Imprinted: COUPER'S OPHTHALMOSCOPE/ CURRY & PAXTON/ LONDON. L: 225 mm (inc handle) x W: 34 mm. Case: 149 x 59 x 22 mm. Historical Significance: A common problem of early ophthalmoscopes, with the light source to the side of the patient, was the need to tilt the mirror at an angle to the line of observation.The observer could only view the fundus obliquely through the correcting lens. With higher powers this produced a reduction in vision and a shifting of the image. In 1875, John Couper of the Royal London Ophthalmic Hospital, overcame this problem by separating the round disc of lenses from a tiltable mirror. The observer could thus look through the centre of the lenses perpendicularly. How Acquired: Donated by Keith Holdsworth, formerly property of Roy Holdsworth, early 20th C Melbourne optometrist Condition: Very good, but one mirror missing Location: Archive Office. Cabinet One Drawer 8 |