vitreous


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vitreous

 [vit´re-us]
1. glasslike or hyaline.
2. the vitreous body.
persistent hyperplastic vitreous a congenital anomaly, usually unilateral, due to persistence of embryonic remnants of the fibromuscular tunic of the eye and part of the hyaloid vascular system. Clinically, there is a white pupil, elongated ciliary processes, and often microphthalmia; the lens, although clear initially, may become completely opaque.

vit·re·ous

(vit'rē-ŭs),
1. Glassy; resembling glass.
2. Synonym(s): vitreous body
[L. vitreus, glassy, fr. vitrum, glass]

vitreous

/vit·re·ous/ (vit´re-us)
1. glasslike or hyaline.

primary persistent hyperplastic vitreous  a congenital anomaly, usually unilateral, due to persistence of embryonic remnants of the fibromuscular tunic of the eye and part of the hyaloid vascular system. Clinically, there is a white pupil, elongated ciliary processes, and often microphthalmia; the lens, although clear initially, may become completely opaque.

vitreous

(vĭt′rē-əs)
adj.
1. Of, relating to, resembling, or having the nature of glass; glassy.
2. Obtained or made from glass.
3. Of or relating to the vitreous humor.
n.
The vitreous humor.

vit′re·os′i·ty (-ŏs′ĭ-tē), vit′re·ous·ness (-əs-nĭs) n.

vitreous

[vit′rē·əs]
Etymology: L, vitreus, glassy
pertaining to the vitreous body of the eye located in the posterior chamber of the eye.

vitreous

adjective Hyalinoid, glass-like.
 
noun
(1) Vitreous body; corpus vitreum [NA6].
(2) Vitreous humour; humour vitreus [NA6].

vit·re·ous

(vit'rē-ŭs)
1. Glassy; resembling glass.
2. Synonym(s): vitreous body.
[L. vitreus, glassy, fr. vitrum, glass]

Vitreous

The transparent gel that fills the back part of the eye.
Mentioned in: Retinoblastoma

vitreous

1. glasslike or hyaline.
2. the vitreous body.

vitreous body
see vitreous body.
vitreous flare
an opacity of the vitreous which occurs with uveitis.
vitreous floater
a small opacity in the vitreous which may stimulate the retina and cause abnormal behavior patterns such as 'fly-biting'.
vitreous humor
1. vitreous body.
2. the watery substance contained within the interstices of the stroma in the vitreous body.
peripapillary vitreous
that adjacent to the optic disk.
persistent hyperplastic vitreous
a congenital anomaly, usually unilateral, due to persistence of embryonic remnants of the fibromuscular tunic of the eye and part of the hyaloid vascular system. Clinically, there is a white pupil, elongated ciliary processes, and often microphthalmia; the lens, although clear initially, may become completely opaque.
vitreous membrane
1. Descemet's membrane.
2. hyaline membrane (1).
3. Bruch's membrane.
4. a delicate boundary layer investing the vitreous body.
primary vitreous
the first stage in development of the vitreous; it persists in the adult as Cloquet's canal.
vitreous removal
vitrectomy.
secondary vitreous
the secondary stage in development of the vitreous; an avascular mass secreted by the retinal ectoderm.
tertiary vitreous
the third and final stage of development of the vitreous; it is secreted by the ciliary epithelium and persists in the adult as the suspensory ligament of the lens.
vitreous veils
curtain-like opacities seen in a normal vitreous.
References in periodicals archive ?
Cytologic features in vitreous preparations of patients with suspicion of intraocular lymphoma.
When patient was seen after 2nd session, there was total exudative retinal detachment with severe activity in the vitreous and finally the eye had to be enucleated.
Extra foveal vitreous traction associated with diabetic diffuse macular edema.
4, 5 Among the major causes of visual impairment in patients of PDR, vitreous hemorrhage (VH) is the foremost cause of sudden visual loss.
In four cases, total retinal detachment & in five cases foreign bodies were located along with vitreous haemorrhage.
Key Words: Diabetic retinopathy, Vitreous hemorrhage, Pars plana vitrectomy
Skin and vitreous humor specimens were positive for Neisseria meningitidis serogroup C DNA by real-time PCR at Wadsworth Center (2).
The Vitreo-Retinal Manifestations of Persistent Hyperplastic Primary Vitreous (PHPV) and Their Management.
A 3-layer antenna was initially designed and simulated by the author for the purpose of implantation inside the Vitreous Humor.
In patients with VMA, the vitreous (jelly-like substance in the center of the eye that is surrounded by a membrane) adheres in an abnormally strong way to the retina (light-sensitive layer of tissue at the back of the eye), which can lead to traction ('pulling') on the retina, causing symptoms including impaired vision.
In ruminant animals, Vitreous of the eye is transparent environment and has a specific jelly building.
This reference on surgical techniques and technology in vitreous microsurgery offers detailed, high-quality, computer-aided color illustrations of surgical steps, plus color photos of equipment used in vitreous microsurgery.