Purpose To measure the refractive properties of the healthy human eye during acute hyperglycemia by means of Scheimpflug imaging and Hartmann-Shack aberrometry. Methods Acute hyperglycemia was induced in five healthy subjects (two males, three females, mean age ±SD 24.8 years ± 4.6) by means

was 71.7 ± 10.4 years. We quantitatively evaluated the objective scattering index (OSI) using the double-pass instrument (OQAS II, Visiometrics) and corneal HOAs using Hartmann-Shack aberrometry (KR-9000PW, Topcon) 3 months postoperatively. Results The mean OSI, corneal HOAs, and logMAR BSCVA 3 months

the Hartmann-Shack wavefront sensor, laser ray tracing, spatially resolved refractometer or the corneal aberrations. This technology has been used to advance our understanding on several visual mechanisms, ocular conditions, and corrective methods. Applications include accommodation, myopia, aging, myopia

PURPOSE. To evaluate the stability of clinical monochromatic aberrometry measurements over a wide range of time scales. METHODS. Monochromatic aberrations in four normal eyes were measured with a clinical Shack-Hartmann aberrometer. A chin rest or a supplemental bite bar attachment was used

A Shack-Hartmann aberrometer was used to assess the optical performances of eyes corrected with rigid or soft contact lenses compared to spectacles. Metrics of optical quality derived from the measured wave aberrations were consistent with the subjective rating by subjects of visual clarity

of actual human subjects, and demonstrates those methods on sample images. First, a subject’s optical system is measured by a Shack-Hartmann wavefront aberrometry device. This device outputs a measured wavefront which is sampled to calculate an object space point spread function (OSPSF). The OSPSF

of reference norms. J Cataract Refract Surg 2006; 32:2064–2074 Q 2006 ASCRS and ESCRS Shack-Hartmann aberrometry is the most popular method for measuring monochromatic higher-order aberrations (HOAs) of the eye. It provides objective, accurate,1–6 high-resolution data needed for wavefront-guided correc

We introduce the concept of vision-realistic rendering–the generation of images that incorporate characteristics of a particular individual’s optical system. We then describe a pipeline for creating vision-realistic images. First, a subject’s optical system is measured by a Shack-Hartmann wavefront

cycloplegia using Shack-Hartmann aberrometry. HOAs were analyzed over a 3-mm and 5-mm pupil using Zernike polynomials from third-sixth order. Optical quality was explored using Visual Strehl ratios (VSX) and equivalent defocus values. RESULTS. HOAs were measured successfully from 68% of the DS group and 95