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2577 results found

Mapping areas to target location of vision screening services

In this study, the authors analysed data from a community vision screening program to determine the efficiency of vision screening in reaching lower income populations. The study used ArcGIS (Esri) mapping software to develop a visual representation of areas needing...

Patients prefer vision from lasik than from smile in a contralateral-eye trial

This prospective, randomised, single surgeon, contralateral-eye clinical trial compared the results in myopic patients undergoing wavefront-guided femtosecond laser in situ keratomileusis (LASIK) in one eye and small-incision lenticule extraction (SMILE) in the fellow eye. The patient-reported outcomes with laser in...

Effective contrast ratio as a measure of binocular visual perception

The authors used a binocular phase combination paradigm to quantitatively evaluate and compare the binocular visual perception of normal individuals and patients with different types of strabismus to understand the binocular visual perception of patients with strabismus and evaluate whether...

Changes in C:D ratio of premature infants with enlarged C:D ratios

This retrospective observational study examined the longitudinal alterations in cup to disc ratio (CDR) among premature infants exhibiting enlarged CDR and normal intraocular pressure (IOP) up to two years. Among the 283 infants, 13.4% manifested an enlarged CDR. In this...

Comparison between findings in ‘active’ or ‘healed’ giant cell arteritis

Giant cell arteritis (GCA) is the most common systemic vasculitis in older people and can cause devastating sight loss if untreated. Temporal artery biopsy is often relied upon for diagnosis by ophthalmologists, with a positive biopsy result indicating whether the...

Contrast sensitivity comparisons for Pelli Robson, Hiding Heidi and Double Happy tests

The authors aimed to compare contrast thresholds and measure agreement across current paediatric assessment of contrast sensitivity with Hiding Heidi and Double Happy contrast sensitivity tests vs. the gold-standard Pelli Robson chart. Reduced contrast levels were similar under different light...

MPH treatment effect in ADHD on choroidal vascular index

In this study the authors aimed to investigate the choroidal vascular index (CVI) in treatment-free children with ADHD, children regularly taking methylphenidate (MPH) and healthy controls. This was a prospective cross-sectional study of 52 patients with newly diagnosed ADHD, 46...

Normative reference values for optic nerve sheath diameter in children

The purpose of this study was to measure optic nerve sheath diameter (ONSD) in paediatric patients without pathology using brain CT performed for various reasons and to provide normal tomographic reference values. This was a retrospective study of CT scans...

Stargardt disease in a Turkish cohort

The authors present a study of 27 Turkish patients who were seen in a single centre over a five-year period. All patients had macular optical coherence tomography (OCT), colour fundus photography and 30-2 Humphery visual fields performed, along with clinical...

Impact of solar eclipses on vision

Solar retinopathy occurs as a result of mechanical and photochemical damage to the retina caused by exposure to excessive light. The authors presented the optical coherence tomography (OCT) and OCT-angiography findings of five patients who looked at the solar eclipse...

Re-evaluation of virtual reality visual field testing

This study evaluated an updated testing algorithm to determine its dynamic range, and to assess if this produced a suitable central hill of vision, and to evaluate test-retest reproducibility in healthy children. This was a prospective study of children with...

QuickSee Free autorefractor results in outreach settings

The Gambia screening project was launched in 2022 to provide vision screening for school-aged children. Within this screening programme, the refractive error measurements of the QuickSee Free autorefractor were compared to cycloplegic refraction in this outreach setting. Six rural schools...