Publications by authors named "McKelvie J"

Background: Ophthalmic clinic non-attendance in New Zealand is associated with poorer health outcomes, marked inequities and costs NZD$30 million per annum. Initiatives to improve attendance typically involve expensive and ineffective brute-force strategies. The aim was to develop machine learning models to accurately predict ophthalmic clinic non-attendance.

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Purpose: To evaluate the agreement between two biometry devices, the Heidelberg Anterion and the Galilei G6 Lens Professional.

Methods: Eyes were scanned with both biometry devices. Analysis of inter-device agreement was conducted for the following metrics: flat (K1), steep (K2) and mean K (Km) for anterior, posterior and total cornea, lens thickness (LT), central corneal thickness (CCT), anterior chamber depth (ACD), white to white (WTW) and axial length (AL).

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Ocular surface squamous neoplasia (OSSN) has a high incidence in the southern hemisphere. This prospective study evaluated the incidence of OSSN in the Waikato region of New Zealand. All patients presenting with pterygium or conjunctival lesions in the Waikato region in 2020 were included.

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Background: Surgical intervention rates (SIR) provide a proxy measure of disease burden, surgical capacity, and the relative risk-benefit ratio of surgery. The current study assessed decade trends in ophthalmic surgery and calculated SIRs for all major classes of commonly performed ophthalmic procedures in New Zealand.

Methods: Retrospective population-based analysis of all ophthalmic surgical procedures performed in New Zealand from 2009 to 2018.

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Cataract surgery is a highly cost-effective treatment, but the surgical intervention rate in New Zealand ranks poorly compared with other high-income countries. The combination of a growing and ageing population, lost operating time due to the COVID-19 pandemic, and geographical disparities, is driving up an unmet demand for cataract surgery. We present several evidence-based strategies with overlapping benefits in access, equity, efficiency and sustainability.

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Aims: The 'Impact on Life' (IoL) questionnaire is a patient reported quality-of-life assessment tool used to prioritise cataract surgery in New Zealand (NZ). This study evaluated the association between ethnicity and IoL questionnaire responses.

Methods: This is a retrospective cohort study of patients prioritised for public-funded cataract surgery between November 2014 and March 2019 in New Zealand.

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Objective: Peripheral ulcerative keratitis (PUK) can cause significant ocular morbidity and mortality. This study aimed to review the effects of systemic immunosuppression on visual outcomes.

Methods: A state-wide, retrospective case series based in Queensland, Australia, was performed.

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Purpose: To assess the agreement between 2 swept-source optical coherence tomography biometry devices, Anterion and IOLMaster 700.

Setting: Tertiary referral center, Brisbane, Australia.

Design: Prospective comparative study.

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The diagnostic utility of neuroradiologic signs associated with idiopathic intracranial hypertension (IIH) for the evaluation of patients presenting with papilloedema remains yet to be elucidated. This multicentre retrospective cohort study assessed consecutive patients presenting with suspected papilloedema to Auckland District Health Board (NZ) and Stanford University Medical Centre (US), between 2005 and 2019, undergoing magnetic resonance imaging and venography (MRI/MRV) or computed tomography and venography (CT/CTV) prior to lumbar puncture assessment for diagnostic suspicion of IIH. Data were collected regarding demographic, clinical, radiologic, and lumbar puncture parameters, and the diagnosis of IIH was determined according to the Friedman criteria for primary pseudotumor cerebri syndrome.

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Phosphatidyl inositol (4,5)-bisphosphate (PI(4,5)P) plays several key roles in human biology and the lipid kinase that produces PI(4,5)P, PIP5K, has been hypothesized to provide a potential therapeutic target of interest in the treatment of cancers. To better understand and explore the role of PIP5K in human cancers there remains an urgent need for potent and specific PIP5K inhibitor molecules. Following a high throughput screen of the AstraZeneca collection, a novel, moderately potent and selective inhibitor of PIP5K, 1, was discovered.

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Purpose/aim: To evaluate the visual outcomes, refractive outcomes and rotational stability of a toric piggyback intraocular lens (1stQ AddOn, GmbH, Mannheim, Germany) for astigmatic refractive error in pseudophakic eyes.

Materials And Methods: Visual and refractive outcomes were assessed based on the standard graphs for reporting refractive surgery outcomes. Rotational stability was assessed according to the Intraocular Lens (IOL) standards of the International Organisation for Standards.

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Purpose: To report the visual, refractive and tomographic outcomes following the implantation of intrastromal corneal ring segments (ICRS) (Ferrara rings, AJL Ophthalmics, Miñano, Spain) in eyes with a history of keratoconus and corneal cross-linking using the Ferrara ring nomogram.

Methods: Retrospective, interventional case series performed at the Corneoplastics Unit, Queen Victoria Hospital, East Grinstead, United Kingdom.

Results: 21 eyes of 19 patients with a history of keratoconus and prior corneal collagen cross-linking had Ferrara Intrastromal Corneal Ring Segments implanted between December 2015 and October 2017.

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Pregnancy influences ocular changes which may exacerbate existing or develop new pathology. This review summarises the existing evidence on the association between pregnancy and progressive keratoconus or iatrogenic keratectasia. Ten online databases were searched systematically.

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Background: Ocular surface squamous neoplasia (OSSN) is a relatively rare disease with a low mortality and highly variable incidence. Despite a high incidence of OSSN in the Southern hemisphere, there is limited epidemiological data for New Zealand. The current study aims to assess the incidence, demographics, and histological grade of OSSN in the Waikato region of New Zealand, home to ~10% of the population of New Zealand.

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Aim: This cross-sectional study aimed to investigate whether presenting visual acuity or patient demographic variables were associated with geographic proximity to primary and secondary ophthalmic services.

Methods: Demographics for all patients referred within the Waikato District between October 2017 and March 2019 that met the threshold for publicly funded cataract surgery were analysed. GPS coordinates for all patient and optometrist addresses were obtained.

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There is an international shortage of donor corneas for transplantation to treat the 1.5-2.0 million new cases of blindness secondary to corneal disease.

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