In tractional retinal detachment, the retina can be pulled away by the contraction of fibrous bands in the vitreous. Photopsiae and floaters are usually absent but a slowly progressive visual field defect is noticeable. The detached retina is usually concave and immobile.
Advanced proliferative diabetic retinopathy can be complicated by tractional retinal detachment of the retina when a contracting band tents up the retina by direct traction. Not infrequently such a diabetic patient experiences further sudden loss of vision in the eye, when the traction exerted by the contracting vitreous pulls a hole in the area of tractional retinal detachment, resulting in a combined rhegmatogenous and tractional retinal detachment.
Was this article helpful?