Retinal detachments are caused by a host of conditions in the eye,
- Rhegmatogenous detachment – caused by retinal tears or breaks (dehiscence in the retina)
- Tractional detachment – caused by tractional bands (due to fibrous tissue growth on the surface of retina)
- Exudative detachment – caused by injury to or inflammation in the eye (when the retina is lifted by fluid accumulation behind it)
Of these Rhegmatogenous detachment is the most common type.
The vitreous is a gel like substance filling the eye behind the lens and in front of the retina. It is an optically clear viscous medium. The vitreous can be become opaque due to bleeding in the eye due to injury/ diabetes mellitus etc.