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    Signal strength important factor when analyzing OCT scans

    Segmentation failure, blocked signal other features to consider for glaucoma assessment


    Blocked signal

    Clinicians should also stay aware of the possibility of a blocked signal, which can come from a variety of sources, Dr. Budenz said.

    “You might catch the edge of the pupil if you’re doing OCTs undilated, or even a smudged lens can cause blocked signals,” he said.

    In patients with moderate to high myopia, optic disc parameters show fewer false positives than RNFL thickness, ganglion cell layer measurements, or total retinal thickness measurements.

    For this reason, he said, the optic disc parameters may be better to use when analyzing OCTs in these patients.


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