The Cup-to-Disc Ratio (CDR) measures the ratio between the areas of the cup and the disc of the optic nerve, aiding in the identification of glaucoma-related alterations. To utilize this feature:

1. Select the desired image for analysis from the gallery
2. Next, click on the editing icon located at the top right corner of the screen
3. Select the CDR option on the bottom menu
4. Move the circles to encompass the areas of interest and use the locks to keep their position while the other is altered
-> Green circle should be moved to Disk.
-> Purple circle should be moved to Cup.
5. Click in the “Check icon” to save the edit.

Along with the CDR measurement this feature also generates a dynamic graph showing the thickness of parts of the optic nerve, measured in micromete

Usually, healthy eyes follow the rule Inferior ≥ Superior ≥ Nasal ≥ Temporal.

Usually, healthy eyes follow the rule Inferior ≥ Superior ≥ Nasal ≥ Temporal.

Along with the CDR measurement this feature also generates a dynamic graph showing the thickness of parts of the optic nerve, measured in micrometers (μm).