The simple way of ptosis classification is as follows: Simple ptosis Ptosis associated with deformities of lids and blepharophimosis Ptosis associated with varying degrees of external ophthalmoplegia Ptosis associated with synkinetic movements of jaw and lids synkinetic Ptosis sympathetic Ptosis associated with congenital sympathetic palsy periodic Ptosis associated with cyclic oculomotor spasm intermittent Pseudoptosis associated with D R Syndrome