Case #21 – The Disc at Risk

The Disc at Risk – Page 27 of 47

High Resolution OCT Images OD and  OS High resolution OCT sections through the fovea shows all layers of the retina are present and appear normal. The normal PIL under the fovea reflects normal photoreceptors and a 20/20 VA, if the rest of the visual pathway is intact.

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Optovue RTVue OCT Images OS (1/22/10) An intact Photoreceptor Integrity Line (PIL) is shown by the OCT section through the macula.

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Optovue RTVue OCT 3D Macula Peel Video OS The 3D peel of the posterior pole reveals a normal Photoreceptor Integrity Line (PIL) throughout OS.

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Optovue RTVue OCT Images OS (1/22/10) The OCT section shows an intact Photoreceptor Integrity Line (PIL) under the fovea OD.

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The Disc at Risk – Page 23 of 47

Optovue RTVue OCT 3D Macula Peel Video OD  (1/22/10) The 3D peel of the posterior pole surrounding the fovea reveals a normal Photoreceptor Integrity Line (PIL) throughout.

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The Disc at Risk – Page 22 of 47

Histological Section as Compared to the OCT Image  Although the photoreceptor integrity line, or the PIL (defined as the junction between the inner and outer segments) is barely visible in most histological sections, it is highly prominent in normal SD OCTs. The PIL, as shown above, should be continuous throughout the entire scan in

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Optovue RTVue OCT 3D Thickness Map OD and OS (1/22/10) Disc vessels do demonstrate subtle elevation in normal eyes, shown in the right eye.

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Optovue RTVue OCT 3D Image Comparison OD and OS (1/22/10) Another comparison of the right and left eye optic discs.

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The Disc at Risk – Page 18 of 47

Optovue RTVue OCT 3D Image Comparison OD and OS (1/22/10) In comparison of OD and OS, note the dramatic difference of optic nerve elevation and swelling of the inner retina, primarily the RNFL.

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