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Impressum
The Retinal Camera - new aspects of a well-known device
1Nagel E., 2Vilser W., 3Riemer T., 3Münch C., 2Tornow R.
1Private ophthalmic practice Rudolstadt, 2Technical University Ilmenau, 3IMEDOS GmbH Weimar
Purpose: To expand the using possibilities of retinal cameras
for diagnostic and documentation by optional hard- and software tools.
Methods: The imaging system Visualis (IMEDOS GmbH Weimar) and a
retinal camera FF 450 (Zeiss Germany) were combined with additional optical
filters and various CCD- matrices. The digital images were optimized and
analysed by special software for ophthalmic images.
Results: There were given examples of following applications: 1.
subretinal image in the near infrared wavelength (retinal pigment epithelium,
choroidal structures - vasosclerosis?) 2. autofluorescence images of the
retina in combination with subretinal images to document dry AMD. 3. digital
subtraction of images to compare fluorescein leakage before and after
PDT or Argon-Laser-coagulation of the wet AMD.4. automatical analysis
of the diameter of retinal vessel segments in single images.
Conclusion: Additional tools for the retinal camera are an interesting
and low cost alternative to scanning laser systems with various wavelengths.
The value of spectral images for differential diagnosis and prognosis
of dry AMD should be examined.