A5018877146- Corneal surgery and disorders
- Ophthalmology and Visual Impairment Studies
- Intraocular Surgery and Lenses
- Retinal Diseases and Treatments
- Glaucoma and retinal disorders
- Ocular Surface and Contact Lens
- Leaf Properties and Growth Measurement
- Retinopathy of Prematurity Studies
- Adaptive optics and wavefront sensing
Queensland University of Technology
2019-2025
Purpose: Axial length increases during accommodation in adults and children; however, refractive error group differences are conflicting have not been explored pediatric populations. This study aimed to evaluate accommodation-induced axial elongation between myopic nonmyopic children. Methods: A range of ocular biometric measurements were captured brief tasks (0, 3, 6, 9 D) using a Badal optometer mounted noncontact optical biometer (Zeiss IOLMaster 700). Reliable for 15 age- sex-matched The...
Abstract Purpose To examine the influence of aperture size (corneoscleral data coverage) on extrapolated scleral sagittal height generated by Pentacam HR derived from Corneo Scleral Profile (CSP) software, comparing measurements obtained during natural and retracted eyelid positions. Methods Corneoscleral topography left eye 20 young (age: 22 [3] years) healthy adults with normal corneas was measured using CSP eyelids in their primary gaze resting position retraction a wire speculum. The...
Low concentration atropine is an effective treatment to slow myopia progression and axial elongation also reduces accommodation. On-axis ocular dimensions of the eye change during accommodation; hence, this study aimed quantify effect 0.025% drops on accommodation-induced changes in biometry. Twenty-eight myopic participants with a mean (SD) age 17.0 (6.0) years (range: 8.0-25.5 years) spherical equivalent refraction (SER) -2.03 (1.05) D -0.75 -4.38 D) were enrolled. Baseline biometry...
Abstract Purpose Near work has been linked with myopia development; however, the underlying mechanism remains unclear. Small increases in axial length during accommodation have previously reported adults, and therefore, this study aimed to examine if accommodation‐induced changes ocular biometry also occur school‐aged children. Methods A range of biometric measurements were captured brief tasks at four demands (0, 3, 6, 9 D), a group 87 non‐myopic, children using Badal optometer mounted...
This study examined anterior corneal, internal ocular, and total ocular higher order aberrations (HOA’s), retinal image quality in a non-myopic, paediatric cohort. Anterior corneal were derived from topography data captured using Placido disk videokeratoscope (E300, Medmont International), whole eye HOA’s measured Hartmann-Shack wavefront sensor (COAS-HD, Wavefront Sciences). The associations between age, sex, refractive error, axial length explored correlation analyses. Data for 84 children...
Abstract Introduction Despite the known associations between near work and myopia, retinal image quality eye growth, accommodation‐induced changes in higher order aberrations (HOA's) children with different refractive errors are poorly understood. Methods Ocular HOA's were measured using a Hartmann‐Shack wavefront sensor (COAS‐HD, Wavefront Sciences) 18 myopic age‐ sex‐matched non‐myopic during short‐term accommodation tasks (four demands of 0, 3, 6 9 D) presented Badal optometer. Eighth...
Abstract Purpose This study compared in vivo crystalline lens shape measurements using B‐scan images from the IOLMaster 700 with phakometry. Methods Twenty‐four young adult participants underwent and phakometry under cycloplegia (1% cyclopentolate). The generated along six meridians 30° increments, which were analysed custom MATLAB software to determine surface radii of curvature. Phakometry obtained Purkinje reflected surfaces. Results image analysis method yielded a lower mean anterior...
Background: In adults, higher order aberrations (HOAs) vary during accommodation [1] which reduces retinal image quality [2]. These changes may provide a mechanism linking near work and myopia development [3], however little is known about HOAs in children. Methodology: of 90 children (mean age spherical equivalent refraction: 8.2 ± 1.8 years; +0.63 0.34 D) were measured at four demands (0, 3, 6 9 using Hartmann-Shack aberrometer (COAS-HD). Individual Zernike term coefficients up to...