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During AAO 2019, two posters pertaining to the use of optical coherence tomography (OCT) were discussed.The first poster, &ldquo;Filigree Vascular Pattern in Combined Hamartoma of Retina and RPE on OCT-A,&rdquo; assessed the vascular structure comprising combination retina hamartoma and retinal pigment epithelium (CHRRPE) lesions using OCT angiography (OCT-A). The study included 20 eyes diagnosed with CHRRPE, which underwent color fundus photographs, OCT, and OCT-A. The primary outcome measure was the density of flow signals&rsquo; &ldquo;filigree&rdquo; vascular pattern via OCT-A analyzed at deep capillary plexus graded as high (&gt; 20), intermediate (10-20), or low (&lt; 10). The most common location was peripapillary (n = 11), followed by macular (n = 8); one was located at the equatorial. Of the peripapillary CHRRPE lesions with full-thickness retinal involvement, 10 presented a high density of filigree vascular pattern. Most of the macular lesions with partial-thickness retinal involvement and preretinal fibrosis (n = 7/8) exhibited a low density of filigree pattern.The second poster presented data from a retrospective study that examined the use of ultrawide-field OCT (UWF-OCT), which offers high-resolution images of posterior fundi, in posterior vitreous in myopic macular retinoschisis (MRS) patients. Data were available on 150 highly myopic eyes. Twelve radial scans of UWF-OCT identified posterior vitreous. Researchers compared the vitreal tractions onto the fovea and retinal vessels in eyes with and without MRS. Overall, 33% of eyes (n = 49/150) presented MRS. Compared to those without MRS, eyes with MRS were more likely to have complicated staphyloma (P = 0.04) and vitreal adhesion onto retinal vessels (P = 0.04). Adhesion onto the fovea did not largely differ between the two groups. The authors concluded that foveal adhesion may not be as significant for MRS development than pathological vitreal adhesion.

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Optical Coherence Tomography in CHRRPE and MRS Eyes

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During AAO 2019, two posters pertaining to the use of optical coherence tomography (OCT) were discussed. ...

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