Fundus camera
A fundus camera , also known as a retinal camera , is an ophthalmological device with which photographic recordings of the back of the eye ( retina ) are made.
The photos support ophthalmological diagnostics and serve to make pathological changes visible and to document them. In the conventional examination of the fundus using slit lamp microscopy or ophthalmoscopy , the pupil of the eye usually had to be enlarged up to 50–60 ° with appropriate medication ( mydriasis ) in order to obtain an unobstructed view. Newer devices, on the other hand, work with infrared lighting, so that dilating the pupils is usually unnecessary.
A fundus camera is equipped with a commercially available digital reflex camera and a ring flash , which enables high-resolution images that can be stored in a digital patient file or printed out on the index card. In contrast to examinations using a slit lamp or ophthalmoscope, this enables a later assessment by third parties or a control of the course of the disease.
Fundus photos show the fundus typically orange-reddish. Due to their high degree of specialization, the cameras required are only offered by a few manufacturers, for example Topcon , Nidek , Carl Zeiss , Meditec , Canon or Kōwa .
Fundus cameras are manufactured in accordance with the DIN EN ISO 10940 standard. They are available as a desktop or portable handheld device. They can also be attached to a slit lamp as additional equipment .
Individual evidence
- ^ Albert J. Augustin: Ophthalmology. 3rd, completely revised and expanded edition. Springer, Berlin a. a 2007, ISBN 978-3-540-30454-8 .
- ↑ Examples of retinal diagnostics
- ↑ Precision Mechanics and Optics Standards Committee (NAFuO): DIN NA 027 Ophthalmic Instruments - Fundus Cameras, DIN EN ISO 10940.
