Analysis of Four Aberrometers for Evaluating Lower and Higher Order Aberrations
نویسندگان
چکیده
منابع مشابه
Analysis of Four Aberrometers for Evaluating Lower and Higher Order Aberrations
PURPOSE To compare the measurements of lower and higher order aberrations (HOA) of 4 commonly used aberrometers. SETTING Massachusetts Eye & Ear Infirmary, Boston, USA. DESIGN Prospective, cross-sectional study, in a controlled, single-blinded fashion. METHODS Multiple readings were obtained in 42 eyes of 21 healthy volunteers, at a single visit, with each of the following aberrometers: A...
متن کاملPrecision and agreement of higher order aberrations measured with ray tracing and Hartmann-Shack aberrometers
BACKGROUND To assess the precision and agreement of measurements of higher order aberrations (HOAs) obtained with a ray tracing aberrometer (iTrace) and a Hartmann-Shack aberrometer (Topcon KR-1 W). METHODS Prospective evaluation of the diagnostic test. Data from the right eyes of 92 normal subjects obtained using the two devices were included in this study. Two observers performed 3 consecut...
متن کاملThe Lower- and Higher-Order Aberrations of the Eye
Keratoconus causes a reduction in the optical quality of the eye as a result of corneal distortion, corneal scarring and higher-order aberrations. The correction of these optical aberrations would significantly improve the visual performance of keratoconic eyes. However the first step would be to measure the optical flaws in keratoconus accurately, which in itself presents a challenge. This pap...
متن کاملProgression of lower and higher-order aberrations: a longitudinal study
BACKGROUND The aim of the present study was to investigate the effect of near-work on lower and higher-order aberrations, and its progression over a 9-month period during the school year. METHODS Data from 24 young-adult myopic eyes, and 24 non-myopic eyes were used in this investigation. The lower-order aberrations, coma, spherical aberration (SA), and total root mean square (RMS) of higher ...
متن کاملAnalysis of higher-order aberrations in a large clinical population.
PURPOSE To use a large wave-front database of a clinical population to investigate relationships between refractions and higher-order aberrations and between aberrations of right and left eyes. METHODS Third- and fourth-order aberration coefficients and higher-order root-mean-squared aberrations (HO RMS), scaled to a pupil size of 4.5-mm diameter, were analyzed in a population of approximatel...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PLoS ONE
سال: 2013
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0054990