<unk>  is caused by a loss of elasticity in the connective tissue supporting the structure of the front portion of the eyelid. Normally, in Caucasians, the orbicularis muscle and overlying skin form a crease near the tarsal border. In<unk> , the excess tissues hangs down, over the front edge of the eyelid. The excess tissue can sometimes obstruct the visual field, especially the superior visual field. In severe cases, it may obstruct as much as 50 percent of the superior visual field.
Dermatochalasis
Conjunctivochalasis
Blepharochalasis
Diabetic bulla
Blepharophimosis
Capillaritis
Trichostasis spinulosa
Actinic cheilitis