Ankyloblepharon filiforme adnatum affecting identical twins.

In this rare congenital abnormality, first described by Hasner (I88i), single or multiple fine strands of tissue join together parts of the upper and lower eyelid margins. These bands arise from the 'grey line', posterior to the cilia but in front of the orifices of the meibomian glands; this is in contradistinction to other forms of developmental ankyloblepharon, in which sheets of tissue that are continuous with the eyelid skin form broad adhesions between the lids. This communication gives the first description of this developmental defect affecting identical twins, and includes a brief note on the spontaneous regression and final resolution of the adhesions which occurred during the first few months of life.