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Ophthalmology and Visual Sciences

Subconjunctival prolapse of orbital fat

Subconjunctival prolapse of orbital fat

Category(ies): Cornea, External Disease, Oculoplastics
Contributor: Jesse Vislisel, MD
Photographer: Toni Venckus, CRA

Intraconal orbital fat can herniate into the subconjunctival space when Tenon's capsule is violated spontaneously or after trauma or surgery. This process appears as a unilateral or bilateral, elevated, compressible, yellow-orange mass with visible lipid globules. It is most commonly located in the superotemporal quadrant of the globe in elderly, obese men.

prolapsed orbital fat
Orbital fat that prolapsed
 bilateral orbital fat prolapse in a different patient.
Orbital fat that prolapsed spontaneously, resulting in adjacent subconjunctival hemorrhage
Reference(s):
  1. Schmack I, Patel RM, Folpe AL, Wojno T, Zaldivar RA, Balzer B, Kang SJ, Weiss SW, Grossniklaus HE. Subconjunctival herniated orbital fat: A benign adipocytic lesion that may mimic pleomorphic lipoma and atypical lipomatous tumor. Am J Surg Pathol. 2007 Feb;31(2):193-8.

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