Vitreous

vitreous /vit·re·ous/ (vit´re-us)

1. glasslike or hyaline.

2. vitreous body.

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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.

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vit·re·ous (vtr-s)

adj.

1. Of, relating to, resembling, or having the nature of glass; glassy.

2. Of or relating to the vitreous body.

n.

The vitreous body.

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Vitreous

The transparent gel that fills the back part of the eye.

Mentioned in: Retinoblastoma

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vitreous

1. glasslike or hyaline.

2. the vitreous body.

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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.