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The vitreous fluid is not present at birth (the eye being filled with only the gel-like vitreous body), but found after age 4-5, and increases in size thereafter. [1] Produced by cells in the non-pigmented portion of the ciliary body, the vitreous humour is derived from embryonic mesenchyme cells, which degenerate after birth. [1]
Vitreous body, a clear gel that fills the space between the lens and the retina in vertebrate eyes Vitreous membrane , a layer of collagen separating the vitreous body from the rest of the eye See also
Hyalocytes, also known as vitreous cells, are cells of the vitreous body, which is the clear gel that fills the space between the lens and the retina of the eye. Hyalocytes occur in the peripheral part of the vitreous body, and may produce hyaluronic acid and collagen fibrils , [ 1 ] [ 2 ] Hyalocytes are star-shaped (stellate) cells with oval ...
Tiếng Việt; 中文; Edit links ... Vitreous chamber; Vitreous body; Vitreous membrane; Z. Zonule of Zinn This page was last edited on 23 June 2022, at 21:23 (UTC ...
Bruch's membrane thickens with age, slowing the transport of metabolites. This may lead to the formation of drusen in age-related macular degeneration. [4] There is also a buildup of deposits (Basal Linear Deposits or BLinD and Basal Lamellar Deposits BLamD) on and within the membrane, primarily consisting of phospholipids.
The ciliary muscle is an intrinsic muscle of the eye formed as a ring of smooth muscle [3] [4] in the eye's middle layer, the uvea (vascular layer).It controls accommodation for viewing objects at varying distances and regulates the flow of aqueous humor into Schlemm's canal.
Vitrification is the progressive partial fusion of a clay, or of a body, as a result of a firing process. As vitrification proceeds, the proportion of glassy bond increases and the apparent porosity of the fired product becomes progressively lower. [3] [10] Vitreous bodies have open porosity, and may be either opaque or translucent. In this ...
The degree of vitritis is graded on a 1 to 4 scale depending upon how limited the view of the retinal structures is (i.e., 1 + = few cells with mild obscuration of the retina; 2 + = nerve and vessels visible; 3 + = only nerve and large vessels visible; 4 + = nerve and vessels not visible).