secondary vitreous


secondary vitreous
embryonic vitreous composed of densely packed fine fibrils formed around the primary vitreous by the inner layer of the optic cup.

Medical dictionary. 2011.

Look at other dictionaries:

  • Vitreous — A clear, jelly like substance that fills the middle of the eye. Also called the vitreous humor, humor in medicine referring to a fluid (or semifluid) substance. * * * 1. Glassy; resembling glass. 2. SYN: v. body. [L. vitreus, glassy, fr. vitrum,… …   Medical dictionary

  • Vitreous sponge — Sponge Sponge (sp[u^]nj), n. [OF. esponge, F. [ e]ponge, L. spongia, Gr. spoggia , spo ggos. Cf. {Fungus}, {Spunk}.] [Formerly written also {spunge}.] 1. (Zo[ o]l.) Any one of numerous species of Spongi[ae], or Porifera. See Illust. and Note… …   The Collaborative International Dictionary of English

  • primary vitreous — the earliest vitreous in the embryo, formed from a mass of ectodermal and mesodermal fibrils between the optic cup and the lens vesicle and vascularized by the proliferating hyaloid system. It ceases to be formed when the lens capsule is formed,… …   Medical dictionary

  • vítreo secundario — Eng. Secondary vitreous Esbozo no vascularizado del humor vítreo que sustituye al vítreo primaro desde la sexta semana de vida embrionaria …   Diccionario de oftalmología

  • syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

  • eye disease — Introduction  any of the diseases or disorders that affect the human eye (eye, human).       This article briefly describes the more common diseases of the eye and its associated structures, the methods used in examination and diagnosis, and the… …   Universalium

  • Ectopia lentis — Classification and external resources ICD 10 H27.1, Q12.1 ICD 9 …   Wikipedia

  • Proliferative vitreoretinopathy — Proliferative Vitreo Retinopathy (PVR) is a disease that develops as a complication, secondary to rhegmatogenous retinal detachment. PVR occurs in about 8–10% of patients undergoing primary retinal detachment surgery and prevents the successful… …   Wikipedia

  • Hyaluronan — Identifiers CAS number 9004 61 9  …   Wikipedia

  • List of dog diseases — This list of dog diseases is a continuously updated selection of diseases and other conditions found in the dog. Some of these diseases are unique to dogs or closely related species, while others are found in other animals, including humans. Not… …   Wikipedia


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