Optic Nerve Head Segmentation

Automated Segmentation of the Optic Nerve Head for Glaucoma Diagnosis

Optic Nerve Head Segmentation Using Hough Transform and Active Contours

Optic nerve head is part of the retina where ganglion cell axons exit the eye to form the optic nerve. Glaucomatous changes related to loss of the nerve fibers decrease the neuroretinal rim and expand the area and volume of the cup. Therefore optic nerve head evaluation is important for early diagnosis of glaucoma. This study implements the detection of the optic nerve head in retinal fundus im...

Optic nerve head drusen.

Optic disc drusen are congenital and developmental anomalies of the optic nerve head seen commonly in clinical practice, often as an incidental ophthalmologic finding during routine exams. Optic disc drusen are a form of calcific degeneration in some of the axons of the optic nerve. Visual acuity is often not affected but the visual fields of these patients can be abnormal and deteriorate over ...

Optic Nerve Head Drusen Mimicking Optic Nerve Tumor

1. Castiblanco CP, Adelman RA. Sympathetic ophthalmia. Graefes Arch Clin Exp Ophthalmol 2009;247:289-302. 2. Cha DM, Woo SJ, Ahn J, Park KH. A case of sympathetic ophthalmia presenting with extraocular symptoms and conjunctival pigmentation after repeated 23-gauge vitrectomy. Ocul Immunol Inflamm 2010;18:265-7. 3. Haruta M, Mukuno H, Nishijima K, et al. Sympathetic ophthalmia after 23-gauge tra...

Gap junctions between optic nerve head astrocytes

From The Wilmer Institute, W. K. Kellogg Foundation Laboratories, The Johns Hopkins University School of Medicine, Baltimore, Md. This investigation was conducted under a Post-Doctoral Research Fellowship supported by a Bob Hope-Fight For Sight Award of the National Council to Combat Blindness, Inc., New York, N. Y. Submitted for publication Nov. 30, 1976. Reprint requests: Dr. Roger C. Wales, ...