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Updated: May 11, 2026
07:22
Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases
Published on: March 11, 2016
Autofluorescence Images with Carl Zeiss versus Topcon Eye Fundus Camera: A Comparative Study
Juan M Muñoz1, Rosa M Coco, M Rosa Sanabria
1Instituto de Oftalmobiologia Aplicada (IOBA), Universidad de Valladolid, Spain ; Consultorio 225, Consultorios América, Vía España, Panamá, Panama.
Journal of Ophthalmology
|May 28, 2013
Summary
The Carl Zeiss fundus camera offers superior contrast for autofluorescence imaging compared to Topcon. Objective parameters were developed to quantify these differences in fundus autofluorescence images.
Area of Science:
- Ophthalmology
- Medical Imaging
Background:
- Fundus autofluorescence (FAF) imaging is crucial for diagnosing retinal diseases.
- Comparing imaging devices like Zeiss and Topcon fundus cameras is essential for accurate diagnosis.
Purpose of the Study:
- To compare the autofluorescence imaging capabilities of Zeiss and Topcon fundus cameras.
- To establish objective quantification methods for FAF images.
Main Methods:
- Utilized IMAGEJ software for quantitative analysis.
- Determined thresholds for darkest veins and peripapillary ring.
- Calculated contrast levels and suprathreshold areas from FAF images.
Main Results:
- Carl Zeiss cameras demonstrated higher contrast values than Topcon.
- Topcon contrast declined with increasing suprathreshold area.
- Zeiss contrast remained consistent regardless of suprathreshold area.
Conclusions:
- Carl Zeiss cameras exhibit superior contrast in FAF imaging over Topcon.
- Developed objective parameters for comparing and monitoring FAF images.
- These parameters can aid in assessing hyper- and hypofluorescence changes.
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