Aqueous humor concentrations of topical fluoroquinolones alone or in combination with a steroid.

Purpose: To compare the aqueous humor (AH) concentrations of moxifloxacin 0.5% and gatifloxacin 0.3% solutions alone or when treatment was combined with steroids, and to correlate these concentrations with the minimum inhibitory concentrations (MIC) for the most common endophthalmitis-causing organisms.

Analysis of corneal esthesia in patients undergoing photorefractive keratectomy.

Purpose: To quantitatively analyze corneal esthesia in patients undergoing photorefractive keratectomy (PRK) surgery.

Methods: Forty-five patients selected for PRK in one eye underwent corneal esthesia using a Cochet-Bonnet esthesiometer preoperatively and 30 and 90 days postoperatively. Patients with a refractive diopter error of 4 or greater received intraoperative 0.

[Ocular surface and hepatitis C].

Purpose: To evaluate the outcomes of the tests used for dry eye diagnosis in patients with hepatitis C virus, and to verify if there is any relationship between the duration of illness and intensity of ocular surface changes.

Methods: 25 patients with hepatitis C virus without treatment, and 29 patients with negative serologic tests for hepatitis C virus were selected. Biomicroscopy, tear film crystallization test, tear film break-up time, evaluation of the corneal staining with 1% fluorescein sodium, Schirmer I test, ocular surface staining with 1% rose bengal and esthesiometry were performed in both groups.