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Abstract
Toxic anterior segment syndrome
(TASS) is a sterile postoperative inflammatory reaction caused by a noninfectious substance e.g. intraocular solutions; preservatives; denatured ophthalmic viscosurgical devices; enzymatic detergents; bacterial endotoxin; oxidized metal deposits and residues; that enters the anterior segment, resulting in toxic damage to intraocular tissues. The process typically starts 12 to 48 hours after cataract/anterior segment surgery, usually improves with steroid treatment.