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Friday, April 1, 2011

The Good News and the Bad News About Eye Floaters

The Good News

I've always been a good news first type of guy. Well, here it is: If the vitreous humor has already pulled off of the back of the eye safely, it won't be under tension and will not pull the retina off the back of the eye. So, no retinal detachment. This is called a Pvd (posterior vitreous detachment).

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You can think of the interface in the middle of the vitreous and retina like plastic wrap: it's clingy. If it's already pulled away from its general position where it pushes the retina flat, it won't rip or tear holes at it starts to shrink. This type of pulling causes a base health in the Erm, or epi-retinal membrane, which can tear in the town of the retina's vision, creating a 'Macular hole.' I'm sure you perceive you don't want a hole in the middle of your vision. It is inherent to self-monitor for this by using an Amsler Grid. The wrinkling that occurs where the retina and vitreous interface causes scar tissue to form. To get an idea of how this occurs mechanically in the eye, just lift up your sleeve and consideration how it wrinkles.

The Bad News

Now we're on to the bad news. That is, if you have a posterior vitreous detachment (Pvd), the floaters in your eyes are more noticeable. In general, eye floaters are more descriptive in a keen background which has a lot of contrast.

The most base posterior vitreous detachments form a ring over the head of the optic nerve. This is called a Weiss's ring. The shape of the ring is caused by the issue of attachments at the rim of the optic nerve head. This ring is often critical visually, and is far larger and more condensed than your first-rate floaters. The more first-rate type of eye floaters are stringy with undefined shapes. Also, a typical eye floater is more often mobile than the ring-shaped one. In general, a someone who has a posterior vitreous detachment has greater risk for retinal detachment (Rd) - this is because they are experiencing changes in vitreous humor already.

The Good News and the Bad News About Eye Floaters

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