The term "vitreous lamella" refers to a thin layer of glassy substance found in the eye. The word "vitreous" is spelled /ˈvɪtriəs/ using the IPA phonetic transcription. The "v" is pronounced like a "v" in "vase," followed by "i" as in "sit," "t" as in "tap," "r" as in "run," "i" again as in "sit," "ə" as in the first vowel sound in "wonder," and "s" as in "soul." The word "lamella" is spelled /ləˈmɛlə/, with the emphasis on the second syllable. The "l" is pronounced like an "l" in "lion," followed by "ə" as in "wonder," "m" as in "mom," "ɛ"
A vitreous lamella is a term commonly used in ophthalmology and anatomy to describe a thin, flat structure within the eye. Specifically, it refers to a layer or sheet-like formation found in the vitreous humor of the eye, which is the clear, gel-like substance that fills the space between the lens and retina.
The vitreous lamella is composed of collagen fibers, which are tightly arranged and provide structural support to the eye. This lamella helps maintain the shape of the vitreous humor and contributes to the overall stability of the eye.
Due to its thin and delicate nature, the vitreous lamella can be prone to degenerative changes and age-related alterations. Over time, the lamella may become less organized and can develop abnormalities such as breaks, detachments, or vitreous opacities. These changes can potentially impact vision and may require medical intervention.
In ophthalmic surgeries, the vitreous lamella can also be a point of focus. Procedures such as vitrectomy involve removing or dissecting the vitreous lamella to access the retina for repair or other treatments.
Overall, the vitreous lamella is an integral component of the eye's structure, playing a significant role in the stabilization and functionality of the vitreous humor. Its precise organization and health are vital for maintaining optimal visual outcomes.
Lamina basalis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "vitreous" is derived from the Latin word "vitreus", which means "made of glass" or "transparent". It is closely related to the Latin word "vitrum", which specifically refers to glass.
The term "lamella" comes from the Latin word "lamella", which means "a small, thin plate" or "scale". It is also related to the Latin word "lamina", which means "a thin layer".
Therefore, "vitreous lamella" combines these two terms to refer to a thin, glass-like plate or layer. The term is often used in scientific or medical contexts to describe structures or tissues that have a glassy or translucent appearance.