Toxic anterior segment syndrome

摘要

In this paper I will present a case of toxic anterior segment syndrome which has influenced my use of intraocular lidocaine. Toxic anterior segment syndrome (TASS) is characterized and distinguished from endophthalmitis by early onset, profound corneal edema, a fixed dilated pupil, significant iris atrophy, intraocular inflammation with possible hypopyon and elevated intraocular pressure (Fig. 1). A number of possible factors and agents have been associated with TASS, for example: intraocular lenses, contaminated BSS, intraocular antibiotics, bacterial endotoxins and residue found on intra-operative instruments.