Refractive changes and visual quality in patients with corneal edema after cataract surgery.

Background: To assess visual quality and stabilization of refractive changes in corneal edema patients after cataract surgery, using visual acuity (VA) and contrast sensitivity measurements.

Methods: Sixty-one eyes were analysed, twenty-three with and thirty-eight without corneal edema. Uncorrected and corrected distance VA (UDVA and CDVA) were determined with an EDTRS chart, the contrast sensitivity function (CSF) under photopic and mesopic illumination conditions with a CVS-1000e chart, clinical refraction, and corneal topography.

Evaluation of Intraocular Pressure and Other Biomechanical Parameters to Distinguish between Subclinical Keratoconus and Healthy Corneas.

(1) Purpose: To assess the main corneal response differences between normal and subclinical keratoconus (SCKC) with a Corvis ST device. (2) Material and Methods: We selected 183 eyes of normal patients, of a mean age of 33 ± 9 years and 16 eyes of patients with SCKC of a similar mean age. We measured best corrected visual acuity (BCVA) and corneal topography with a Pentacam HD device to select the SCKC group.

Optical quality after instillation of eyedrops in dry-eye syndrome.

Purpose: To study the effect of eyedrop instillation on the optical quality of the air-tear film interface at the anterior cornea in cases of dry eye.

Setting: University of Valencia, Valencia, Spain.

Methods: Corneal aberrations (total, spherical-like, and coma-like) were determined from corneal elevation maps and purpose-designed software in cases of dry eye before, immediately after, and 10 minutes after lubricating eyedrop instillation (Blink Intensive Tears).

Relevance of pupil size in the clinical determination of retinal straylight on young healthy human eyes.

Purpose: To determine the impact of pupil size in the psychometric determination of intraocular straylight determined by the compensation comparison method in a population of young healthy adults.

Methods: Straylight was measured in 21 eyes from 11 young healthy subjects using the C-Quant (Oculus, Germany). Subjects were dilated with Phenylephrine 5%, and varying pupil size was simulated using three different diaphragms of 3, 5 and 6 mm in diameter.