Abstract

P 249

Clinical application of the digital 200°-ultra-widefield-angiography system Optomap® fa

Eva Jakob, Maria Sanchez, Stefan Dithmar
Universitäts-Augenklinik Heidelberg

Objective
The Optomap® fa system features a 200° retina laser scanner generating fundus images and an ultra-widefield-angiography function (resolution of 14µm). Both modes offer an additional setting for central 100° fundus images with a resolution of 11µm. The technology is based on a green (532nm) and a red (633nm) laser for the scanning function and a blue one (488nm) for angiography. 200° widefield images are possible in miosis where a pupil size of 2mm is sufficient.
Methods
Patients with various pathologies of the peripheral and central retina were examined with the Optomap® system.
Results
The system offers a user friendly menu navigation. The examination requires a position very close to the machine which is not easy. The examiner must be well trained and the patient must be quite cooperative to obtain good results. The examination is difficult in patients who are unable to fixate or have a narrow palpebral fissure. The 200°-widefield system provides a good illustration of the whole fundus including central and peripheral areas on one picture. We did not find a difference in quality between examinations in miosis and mydriasis. Fundus images are often diplayed miscolored.
Widefield angiography images show peripheral as well as central retinal areas at once. Creation of composite-images is not necessary with the Optomap system. The resolution is comparable to the resolution of other angiography devices.
The Optomap® fa system does not yet offer autofluorescence or indocyaningreen images.
Conclusions
The 200°-widefield-angiography system Optomap® fa offers central and peripheral fundus imaging and fundus fluorescein angiography in high resolution. The system is suitable especially for angiographic diagnostics and monitoring of peripheral retinal diseases.

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