# Retina layers annotation

**URL:** <https://discourse.slicer.org/t/retina-layers-annotation/29491>\
**Category:** Support\
**Tags:** segmentation, annotations\
**Created:** [May 16, 2023, 11:29am UTC](https://discourse.slicer.org/t/retina-layers-annotation/29491 "2023-05-16T11:29:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![aliyavar1374](https://avatars.discourse-cdn.com/v4/letter/a/b9e5f3/32.png) [@aliyavar1374](https://discourse.slicer.org/u/aliyavar1374)\
**Post date:** [May 16, 2023, 11:29am UTC](https://discourse.slicer.org/t/retina-layers-annotation/29491/1 "2023-05-16T11:29:19Z")

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Dear All,  
I hope you are doing well.

I am a PhD student working on segmenting oct images. In the first phase of my work, I am investigating tools to annotate our data. I have recently used the Slicer, and I would be grateful if you could ask my questions about utilizing it for my work:

1. Good annotation objects to annotate curves and layers of the retina. To be exact, creating thin (narrow) lines on the layers (or curves). I have tried some objects, such as thresholding, painter, draw tube , …, but none of them is exactly what I need 2) Carrying the annotations over other B-Scans to avoid repeating doctors’ annotation and allowing them to edit the result.  
Thanks a lot.  
Best,  
Ali