Drusen – Know the Difference Between Hard and Soft Drusen
January 25th, 2012Macular drusen are simply small yellow or white deposits of lipid (a fatty compound) and calcium that build up in the Bruch’s membrane of the eye. The Bruch’s Membrane is a layer of tissue underneath the retina.
My husband, who has a strong family history, went for his yearly eye exam this week, and we wanted to know if any of these little, yellow deposits had developed in the past year. Thankfully, not yet.
Well, why is this important to know? And if I have some of these deposits should I be concerned? It may depend on what type you have.
There are two main types:
1) Hard and
2) Soft
Hard Drusen
This type of deposit is the less harmful form. They are characterized by:
round shape
distinct, well defined borders
and are quite small.
They are:
1) Very common with age and are
2) Very often seen in those 40 and older
3) Not an indication of the development of macular degeneration
4) May develop into the soft kind
5) Made up of lipids and calcium
Soft Drusen
This type is considered to be an early indicator of macular degeneration, although some people with this type do not develop macular degeneration.
The soft form are characterized by:
pale yellow
ill-defined borders
larger than the hard form
vary in size and shape.
Soft Deposits:
1) Are more often associated with loss of vision
2) May cause the retinal pigment epithelium (RPE) to separate from the other retinal layers.
If you have a family history of macular degeneration it is especially important to know if you are forming these deposits.
Once they have been detected in your eye exam, it is time to take note and make some changes in your diet and lifestyle.