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Purpose: Antiglaucoma drugs may induce ocular surface changes due to the presence of benzalkonium chloride (BAC). The purpose of this study was to compare the effect on ocular surface of carteolol and timolol preserved with a different concentration of BAC (0.004% and 0.01%, respectively). Methods: Seventy-nine
Purpose: this effect was to compare present effect on ocular surface of cartolol and timolol preserved with a different concentration of BAC (0.004% and 0.01% , respectively). Methods: Seventy-nine