Chapter 10 Vitreous INTRODUCTION The vitreous is a gel composed of collagen fibrils, mucopolysaccharides, and water (98%). It is normally optically transparent. It maintains the shape of the eye and aids in keeping the retina opposed to the underlying layers. Pathologically it may be affected by changes associated with aging (asteroid hyalosis); liquefaction (syneresis), which often accompanies inflammation of the uvea and retina; degeneration; and the deposition of various chemical and cellular infiltrates (inflammatory and neoplastic cells), blood, or cholesterol (synchysis scintillans). Figure 10-1 Persistent hyaloid remnant in an Old English sheepdog. The hyaloid artery supplies blood to the developing eye in utero. Around the time of birth, it normally atrophies and disappears. The hyaloid remnant in this figure remains attached axially to the posterior lens capsule. It is not patent. (Courtesy Dr. E. Dan Wolf.)< div class='tao-gold-member'> Only gold members can continue reading. Log In or Register to continue Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Related posts: Conjunctiva Orbit Glaucoma Eyelid Stay updated, free articles. Join our Telegram channel Join Tags: Color Atlas of Canine and Feline Ophthalmology Jul 31, 2016 | Posted by admin in INTERNAL MEDICINE | Comments Off on Vitreous Full access? Get Clinical Tree
Chapter 10 Vitreous INTRODUCTION The vitreous is a gel composed of collagen fibrils, mucopolysaccharides, and water (98%). It is normally optically transparent. It maintains the shape of the eye and aids in keeping the retina opposed to the underlying layers. Pathologically it may be affected by changes associated with aging (asteroid hyalosis); liquefaction (syneresis), which often accompanies inflammation of the uvea and retina; degeneration; and the deposition of various chemical and cellular infiltrates (inflammatory and neoplastic cells), blood, or cholesterol (synchysis scintillans). Figure 10-1 Persistent hyaloid remnant in an Old English sheepdog. The hyaloid artery supplies blood to the developing eye in utero. Around the time of birth, it normally atrophies and disappears. The hyaloid remnant in this figure remains attached axially to the posterior lens capsule. It is not patent. (Courtesy Dr. E. Dan Wolf.)< div class='tao-gold-member'> Only gold members can continue reading. Log In or Register to continue Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Related posts: Conjunctiva Orbit Glaucoma Eyelid Stay updated, free articles. Join our Telegram channel Join
