A5035894302- Ophthalmology and Visual Impairment Studies
- Visual perception and processing mechanisms
- Retinal Diseases and Treatments
- Glaucoma and retinal disorders
- Tactile and Sensory Interactions
- Intraocular Surgery and Lenses
- Corneal surgery and disorders
- Neonatal and fetal brain pathology
- Retinal Imaging and Analysis
- Retinopathy of Prematurity Studies
- Ophthalmology and Visual Health Research
- Hyperglycemia and glycemic control in critically ill and hospitalized patients
- Ocular Surface and Contact Lens
- Sleep and Wakefulness Research
- Ocular and Laser Science Research
- Prenatal Substance Exposure Effects
- Global Health Workforce Issues
- Motor Control and Adaptation
- Retinal and Macular Surgery
- Ergonomics and Musculoskeletal Disorders
- Circadian rhythm and melatonin
- Global Health and Surgery
- Infant Development and Preterm Care
- Sleep and related disorders
- Tea Polyphenols and Effects
Flinders University
2021-2024
University of Auckland
2012-2021
University of Canberra
2018-2020
ACT Government
2018-2019
New Zealand Christians in Science
2018
Manukau Institute of Technology
2012
Neonatal hypoglycemia is common and can cause neurologic impairment, but evidence supporting thresholds for intervention limited.We performed a prospective cohort study involving 528 neonates with gestational age of at least 35 weeks who were considered to be risk hypoglycemia; all treated maintain blood glucose concentration 47 mg per deciliter (2.6 mmol liter). We intermittently measured up 7 days. continuously monitored interstitial concentrations, which masked clinical staff. Assessment...
Hypoglycemia is common during neonatal transition and may cause permanent neurological impairment, but optimal intervention thresholds are unknown.To test the hypothesis that neurodevelopment at 4.5 years related to severity frequency of hypoglycemia.The Children With Their Later Development (CHYLD) Study a prospective cohort investigation moderate late preterm term infants born risk hypoglycemia. Clinicians were masked interstitial glucose concentrations; outcome assessors glycemic status....
Abstract Purpose Optical treatment alone can improve visual acuity ( VA ) in children with amblyopia, thus clinical trials investigating additional amblyopia therapies (such as patching or videogames) for require a preceding optical phase. Emerging adult patients are entering trials. It is unknown whether effective adults and an correction phase required involving adults. Methods We examined participants who underwent the Binocular Treatment Amblyopia using Videogames BRAVO trial ANZCTR ID :...
Today's students have increased expectations for flexible learning options and evidence-based practice resources to be available support curricular activities. We investigated: (i) the suitability of a static website teaching ocular anatomy physiology an interactive version with quiz self-assessment activities (ii) usefulness blended online in-lab environment teach in Optometry. administered survey compare responses optometry who had access website, those from previous year used version....
Abstract Study Objectives This study investigated the differences in melatonin circadian timing and output, sleep characteristics, cognitive function myopic non-myopic (or emmetropic) children, aged 8–15 years. Methods Twenty-six myopes (refractive error [mean ± standard mean] −2.06 0.23 diopters) 19 emmetropes (−0.06 0.04 diopters), 11.74 2.31 years were recruited. Circadian was assessed using salivary dim-light onset (DLMO), collected half-hourly for 7 hours, beginning 5 hours before...
Children may be tested with a variety of visual acuity (VA) charts during their ophthalmic care and differences between can complicate the interpretation VA measurements. This study compared measurements across four pediatric Sloan letters identified chart design features that contributed to inter-chart in VA.VA was determined for right eyes 25 adults 17 children (4-9 years age) using Crowded Kay Pictures, linear Lea Symbols, Keeler logMAR, HOTV Early Treatment Diabetic Retinopathy Study...
We developed and validated a technique for measuring global motion perception in 2-year-old children, assessed the relationship between other measures of visual function.Random dot kinematogram (RDK) stimuli were used to measure coherence thresholds 366 children at risk neurodevelopmental problems 24 ± 1 months age. RDKs variable presented eye movements analyzed offline grade direction optokinetic reflex (OKR) each trial. Motion calculated by fitting psychometric functions resulting...
When measuring recognition acuity in a research setting, the most widely used symbols are Early Treatment of Diabetic Retinopathy Study (ETDRS) set 10 Sloan letters. However, not appropriate for patients unfamiliar with letters, and individual letters is variable. Alternative pictogram sets available, but generally comprised fewer items. We out to develop an open-access pictograms that would elicit more consistent estimates across items than ETDRS from visually normal adults. measured...
Objectives To assess the accuracy of preschool vision screening in a large, ethnically diverse, urban population South Auckland, New Zealand. Design Retrospective longitudinal study. Methods B4 School Check records (n=5572) were compared with hospital eye department data for children referred from due to impaired acuity one or both eyes who attended referral appointment (n=556). False positive screens identified by comparing that failed data. Estimation false negative rates relied on passed...
Access to culturally safe health services is a basic human right, however through the lasting effects of colonisation, oppression, and systemic racism, individual community Indigenous peoples in Australia Aotearoa New Zealand have been severely impacted. The Aboriginal Torres Strait Islander Health Cultural Safety Strategy Australian Practitioners Regulation Agency, Standards Competence Optometrists Dispensing Opticians Board Zealand, recognise importance access care for Aboriginal, Māori...
Abstract Prenatal exposure to recreational drugs impairs motor and cognitive development; however it is currently unknown whether visual brain areas are affected. To address this question, we investigated the effect of prenatal drug on global motion perception, a behavioural measure processing within dorsal extrastriate cortex that thought be particularly vulnerable abnormal neurodevelopment. Global perception was measured in one hundred forty-five 4.5-year-old children who had been exposed...
Convergence insufficiency, the most common binocular vision anomaly, is characterised by a receded near point of convergence and an exophoria which at least 4 prism dioptres (Δ) larger than distance. However, repeatability standard heterophoria measures are poorly understood. This study assessed ability four tests to detect differences 4Δ evaluating inter- intra-examiner variability selected techniques. Distance horizontal heterophorias 20 visually-normal adults were measured with...
Background: Limited data are available on the causes of visual impairment in preschool children New Zealand. We aimed to review demographic and parameters referred Ophthalmology Department, Manukau Super Clinic from vision screening programs South Auckland.Methods: Retrospective medical record 131 children, aged three five years, community‐based Department for further assessment. Medical records were reviewed determine: reason referral; findings ophthalmic assessments; treatment received;...
The New Zealand Ministry of Health provides funding for the delivery health care across regions via 20 District Boards. Funding includes subsidisation therapeutic pharmaceutical agents/drugs. distribution optometrists and ophthalmologists was investigated to understand accessibility eye in Zealand. Changes made optometrists' scope practice 2005 2014 increased range drugs that suitably qualified could prescribe. Therefore, authorised prescribe those not also investigated.Information from...
Levodopa has been investigated as a therapeutic solution for ocular disorders involving dysregulation of the dopaminergic system, especially in context myopia. However, given critical role dopamine plays normal vision, this phase I trial examined whether levodopa/carbidopa eye drops induce any regional changes retinal structure and function.
Purpose: Suppression in amblyopia may be an unequal form of normal interocular suppression or a distinct pathophysiology. To explore this issue, we examined the orientation tuning and contrast dependence continuous flash (CFS) adults with visually controls. Methods: Nine patients (mean age, 26.9 ± SD 4.7 years) 11 controls 24.8 5.3 participated. In CFS paradigm, spatially one-dimensional noise refreshing at 10 Hz was displayed one eye to induce other eye, strength measured by using grating...
Abstract Purpose Although vanishing optotype preferential‐looking tasks are commonly used to measure visual acuity ( VA ), the relative sensitivity of these tests refractive error is not well understood. To address this issue, we determined effect spherical and astigmatic simulated errors on adult measures obtained using optotypes, picture optotypes Sloan letters. Methods was uniocularly for adults under conditions (0.0–3.0 DS ; n = 23) DC at 90° 180°; 20) defocus Cardiff Acuity Test...