Non-rhegmatogenous Retinal Detachment or secondary Retinal Detachment.

Secondary or Non-Rhegmatogenous Retinal Detachment.

It is always secondary to retinal disease or pathology, unlike primary retinal detachment which is caused by trauma or mechanical force.

Mechanism Of Detachment.
1. Retina being pushed away from its bed by the accumulation of blood for example as in case of choroidal haemorrhage or exudate as in case of exudative choroiditis or retinopathy. Neoplasms or tumours of the choroid may also push the retina away from its bed.
2. The retina is pulled away from its bed for example as in case of contraction of fibrous tissue bands in the vitreous for example as in plastic cyclitis, proliferative retinopathy or retrolental fibroplasia...

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