Tuesday, March 24, 2009

how does a tear form in the retina?

The cavity of the eye is filled with vitreous gel.  The vitreous slowly becomes liquified in all people.  As a result...the gel portion of the vitreous becomes mobile...and starts to collapse and move towards the front of the eye.  In some people...the gel is very strongly attached to the retina in the back of the eye.  As the gel collapses and  moves forward...sometimes strong pulling occurs on the retina...this can sometimes lead to a tearing of the retina.  Fluid from the cavity of the eye can then collect underneath the retina...creating a retinal detachment.

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