Drusen
Drusen
Drusen (/ˈdruːzən/; singular: druse) are tiny yellow or white deposits that form in a layer of the retina called Bruch's membrane. They are commonly found in the eyes of older adults and are often a normal part of aging. However, a high number of drusen in the eye can be a risk factor for certain eye diseases, including age-related macular degeneration (AMD).
Etymology
The term "drusen" is derived from the German word "Druse," which means "geode." This term was chosen due to the geode-like appearance of these deposits in the eye.
Types of Drusen
There are two main types of drusen: hard drusen and soft drusen.
- Hard drusen are small, round, and clearly defined. They are often scattered throughout the retina and are usually not associated with vision loss.
- Soft drusen are larger and less defined. They often cluster together and are associated with a higher risk of developing AMD.
Related Terms
- Bruch's membrane: The part of the eye where drusen form.
- Age-related macular degeneration: A medical condition which can be associated with a high number of drusen.
- Retina: The layer of the eye where light-sensitive cells are located.
See Also
External links
- Medical encyclopedia article on Drusen
- Wikipedia's article - Drusen
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