Archive | December 2010

You are browsing the site archives by date.

Chapter 138 – Choroidal Hemorrhage

Chapter 138 – Choroidal Hemorrhage   MICHAEL A. KAPUSTA PEDRO F. LOPEZ           DEFINITION • A hemorrhage in the suprachoroidal space that occurs spontaneously, intraoperatively, or traumatically, or is associated with intraocular vascular anomalies.   KEY FEATURES • One or more dome-shaped choroidal protrusions. • Forward movement of the iris, lens, […]

Chapter 137 – Serous Detachment of the Neural Retina

Chapter 137 – Serous Detachment of the Neural Retina   RAJIV ANAND           DEFINITION • An elevation of the neural retina due to the accumulation of subretinal fluid in the absence of a retinal break or significant preretinal traction.   KEY FEATURES • Dependent subretinal fluid that shifts with change in […]

Chapter 136 – Rhegmatogenous Retinal Detachment

Chapter 136 – Rhegmatogenous Retinal Detachment   CHARLES P. WILKINSON           DEFINITION • A condition in which fluid from the vitreous cavity passes through a full-thickness retinal defect into the subretinal space to cause separation of the neural retina from the underlying retinal pigment epithelium (RPE).   KEY FEATURES • Seen […]

Chapter 135 – Retinal Breaks

Chapter 135 – Retinal Breaks   CRAIG M. GREVEN           DEFINITION • A full-thickness defect in the neural retina.   KEY FEATURES • A round, oval, or horseshoe-shaped defect. • Typical location near the vitreous base, but can occur anywhere. • Subcategories are holes, tears, or dialyses.   ASSOCIATED FEATURES • […]

Chapter 134 – Peripheral Retinal Lesions

Chapter 134 – Peripheral Retinal Lesions   WILLIAM S. TASMAN           DEFINITION AND KEY FEATURES • A heterogeneous group of anatomical variations, degenerative changes, and pathological processes that can be observed ophthalmoscopically in the anterior neural retina and ora serrata region.   ASSOCIATED FEATURES • Best observed with indirect ophthalmoscopy and […]

Chapter 133 – Angioid Streaks

Chapter 133 – Angioid Streaks   JAMES F. VANDER           DEFINITION • Irregular, jagged breaks in an abnormal, calcified Bruch’s membrane.   KEY FEATURES • Narrow, jagged lines deep to the retina. • Radiating out from the optic disc in a fashion similar to the retinal vessels.   ASSOCIATED FEATURES • […]

Chapter 132 – Coexistent Optic Nerve and Macular Abnormalities

Chapter 132 – Coexistent Optic Nerve and Macular Abnormalities   GARY C. BROWN MELISSA M. BROWN           DEFINITION • A heterogeneous group of optic nerve disorders that have secondary pathological effects on the macular retina.   KEY FEATURES • Structural changes of the optic nerve. • Secondary retinal detachment, retinoschisis, or […]

Chapter 131 – Cystoid Macular Edema

Chapter 131 – Cystoid Macular Edema ARTHUR FU IRMA AHMED EVERETT AI DEFINITION • A pathological response consisting of fluid accumulation in the outer plexiform layer of the central macula that results in the formation of visible cystic spaces. KEY FEATURES • Serous fluid accumulation in multiple cystoid spaces. • Thickening of the central macula. […]

Chapter 130 – Vitreomacular Traction Syndrome

Chapter 130 – Vitreomacular Traction Syndrome   WILLIAM E. SMIDDY           DEFINITION • Incomplete posterior vitreous separation with preretinal tissue proliferation and associated macular traction distributed in the zone of persistent vitreous attachment.   KEY FEATURES • Prominent vitreoretinal attachment at the posterior pole. • Peripheral vitreous detachment. • Epiretinal membrane […]

Chapter 129 – Epiretinal Membrane

Chapter 129 – Epiretinal Membrane MARK W. JOHNSON DEFINITION • An avascular, fibrocellular membrane that proliferates on the inner surface of the retina to produce various degrees of macular dysfunction KEY FEATURES • Transparent, translucent, opaque, or pigmented membrane on the inner retinal surface • Tangential traction on the macula • Partial or complete posterior […]