Results 201 to 210 of about 15,938,885 (242)

Higher-order Aberrations in Children

American Journal of Ophthalmology, 2006
To quantify and characterize higher order aberrations in children and to investigate the influence of refractive error and cycloplegia.Observational cross-sectional study.setting: Clinical practice. patients: One hundred sixty-two eyes of 82 children were examined. The mean age of the children was 6.7 years (range, 4 to 14 years), and the mean manifest
Caitriona, Kirwan, Michael, O'Keefe, Hansjorg, Soeldner   +2 more
openaire   +2 more sources

A pitfall in the calculation of higher order aberrations

Ultramicroscopy, 2008
When calculating aberration coefficients of secondary and higher order, there is a danger of misinterpreting the result. An example is given for a homogenous magnetic field and the source of the difficulty is described.
Bohumila, Lencová, Michal, Lenc, Peter W, Hawkes   +2 more
openaire   +2 more sources

Corneal higher-order aberrations in phlyctenular keratitis

Japanese Journal of Ophthalmology, 2020
To characterize tomographic patterns and quantify corneal higher-order aberrations (HOAs) in eyes with corneal scar due to phlyctenular keratitis.Retrospective consecutive case series.This study included 51 eyes of 38 patients (24 women; 14 men) with corneal scar due to phlyctenular keratitis. HOAs of the total cornea, and of the anterior and posterior
Taiichiro Katayama, Yukari Yagi-Yaguchi, Osama Ibrahim, Jun Shimazaki, Takefumi Yamaguchi   +4 more
openaire   +2 more sources

Higher-order aberrations of lenticular opacities

Journal of Cataract and Refractive Surgery, 2004
To measure and quantify higher-order aberrations induced by different types of lenticular opacities.Department of Ophthalmology, University of Auckland, and Department of Ophthalmology, Auckland Public Hospital, Auckland, New Zealand.Patients with lenticular opacities were recruited from outpatient clinics of a major tertiary referral center for ...
Nisha, Sachdev, Susan E, Ormonde, Trevor, Sherwin, Charles N J, McGhee   +3 more
openaire   +2 more sources

Higher Order Aberrations in Children With Amblyopia

Journal of Pediatric Ophthalmology & Strabismus, 2008
Purpose To quantify and characterize higher order aberrations in eyes of children with amblyopia. Methods Higher order aberrations were measured in a group of children using the iTrace Visual Function Analyzer (Tracey Technologies, Houston, TX).
Caitriona, Kirwan, Michael, O'Keefe
openaire   +2 more sources

Higher‐Order Wavefront Aberrations in Retinitis Pigmentosa

Optometry and Vision Science, 2005
ABSTRACT: Purpose. The purpose of this study was to characterize higher‐order wavefront aberrations associated with posterior subcapsular (PSC) cataracts in patients with retinitis pigmentosa (RP). Methods.
Aruna S, Rajagopalan, Mahnaz, Shahidi, Kenneth R, Alexander, Gerald A, Fishman, Ruth, Zelkha   +4 more
openaire   +2 more sources

Association between amblyopia and higher-order aberrations

Journal of Cataract and Refractive Surgery, 2007
We report a case with asymmetric higher-order aberrations and wavefront profiles possibly leading to unilateral amblyopia. Stimulus deprivation, strabismus, substantially unequal refractive error, microtropia, and organic causes were ruled out. Keratographic assessment was similar bilaterally, but there was a between-eye difference by wavefront ...
Gaurav, Prakash, Namrata, Sharma, Vandana, Chowdhary, Jeewan Singh, Titiyal   +3 more
openaire   +2 more sources

Corneal Higher-Order Aberrations in Infectious Keratitis

American Journal of Ophthalmology, 2017
To characterize the corneal higher-order aberrations (HOAs) in eyes with Acanthamoeba keratitis (AK), bacterial keratitis (BK), and fungal keratitis (FK).Retrospective consecutive case series.This retrospective study includes 18 normal subjects and 63 eyes of 62 consecutive patients with corneal scarring due to AK (20 eyes), BK (35 eyes), and FK (8 ...
Eisuke Shimizu, Takefumi Yamaguchi, Yukari Yagi-Yaguchi, Murat Dogru, Yoshiyuki Satake, Kazuo Tsubota, Jun Shimazaki   +6 more
openaire   +2 more sources

Effects of epiblepharon surgery on higher-order aberrations

Journal of American Association for Pediatric Ophthalmology and Strabismus, 2016
To quantify and compare higher-order aberrations (HOAs) in children after epiblepharon surgery.The medical records of children (mean age, 7.3 years [range, 2-13 years]) who underwent surgery for epiblepharon were reviewed retrospectively. Aberrometry was conducted before surgery and at 1 month's and 3 months' follow-up using the Wavefront Analyzer KR ...
Hwa, Lee, Sungmin, Jang, Minsoo, Park, Jinhwan, Park, Sehyun, Baek   +4 more
openaire   +2 more sources

Higher-order aberrations in keratoconus suspect

Sudanese Journal of Ophthalmology, 2020
Purpose: The aim of this study was to assess the pattern of higher-order aberrations (HOAs) in keratoconus suspect (KCS) eyes using Scheimpflug–Placido topography (Sirius, CSO, Italy) and also to detect the sensitivity and specificity of all parameters to discriminate subclinical keratoconus (KC), and normal eye was investigated.
EngyMohamed Mostafa, Mariam Vector, Ismail Moussa, Mohamed Anber   +3 more
openaire   +1 more source