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Case 2: Topcon Fundus and OCT Images OU As in case 1, the PIL is demonstrated to be attenuated in the eye with the medullation. An attenuated PIL indicates a structural photoreceptor abnormality. Prognosis for visual acuity improvement with patching and vision training is poorer in eyes with an abnormal PIL than in
Case 1: Topcon Fundus and OCT Images OS
Case 1 Topcon Fundus and OCT Images OS
Case 1: Topcon Fundus and OCT Images OS The horizontal OCT section above the macula as shown reveals a hyperreflective RNFL which is so thick that the underlying structures are "shadowed" or "masked" by the medullated fibers.
Case 1: OCT Images OU Contrast the normal PIL in the right eye to the quite attenuated PIL in the left eye. Also note that the retinal pigment epithelium is thinner in the left eye than in the right eye. The external limiting membrane appears essentially equal in both eyes. The posterior hyaloid
Case 1: Topcon Fundus and OCT Images OS
Case 1: Color Fundus Images OS The medullation is most profound superior temporally but spares the macula. Medullation is typically congenital and non-progressive.
In the left eye, note that medullation (or myelination) surrounds the optic nerve head but does not extend into macula.
