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Wratten filter

How to use the Wratten tool

The AOS Wratten tool enhances details within the image analysis when using NaFl (Sodium Fluorescein). 

Step 1: Select a fluorescein image from the media gallery on the left, Figure 1. 

Figure 1

Step 2: To activate the filter click on Wratten. The image will be automatically enhanced, as shown in Figure 2.

Figure 2

 Step 3: To deactivate the filter simply click the Wratten button again. 


  • Please take into account that the Staining function (Area, Corneal Grid, Thickness) cannot be applied over the Wratten filter, as well as the other filters (Red Free, Enhance). 

  • Additional tools like Annotate, Draw, and Ruler can be used while the Wratten filter is applied. 

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