vitreous opacities
Last reviewed 01/2018
- floaters ( entopsia)
- are formed due to images shed on the retina by opacities in the vitreous
- can be caused by different types
of vitreous opacities like (1)
- red blood cells
- inflammatory cells
- tumor cells
- amyloid
- they may cause a localised and faint impediment to sight
- present as fine dots,cobwebs,veils,strings or clouds (2)
- their perception depends on the following characteristics:
- size of the opacities
- optical density
- distance from the retina
- pupil size
- background (1)
- may be
perceived to move as the opacities move within the vitreous
- e.g ocular movements
- they may occasionally be the prelude to a retinal detachment
Reference: