You searched for "visual acuity"

116 results found

Smartphone based visual acuity

Smartphone technology is becoming widely available to all age groups and settings. Apps using Snellen acuity charts are widely available and this study evaluated the equivalence of a smartphone-based visual acuity chart with a standard 6m Snellen visual acuity (6SVA)...

E-Dobson card for visual acuity

The authors assessed the utility of an electronic Dobson acuity card which can be altered for spatial frequency. Thirty-six infants and toddlers aged 5-36.7 months were recruited – equal females and males. Fourteen had high refractive error. The card is...

Computerised visual acuity measurements in AMD

The aims of this study were to investigate whether half-letter width spacing in COMPlog algorithms had an adverse effect on agreement in patients with AMD with the ETDRS chart. Fifty adult participants with AMD took part with a median age...

Visual acuity conversion to digital acuity

The author proposes a basic set of evidence-based digital acuities for alpha vision to facilitate formatting of visual acuity data uniformly. This work was informed by a review of the literature. A full table provides US and international classification of...

Visual acuity after cataract surgery in AMD patients

The data from this study are obtained from the Age-Related Eye Disease Study (AREDS) 2 and analysed to evaluate if cataract surgery benefits patients with concurrent age-related macular degeneration (AMD). The AREDS 2 was a five year, prospective, multi-centre randomised...

Comparing visual acuity to visual demand levels in classrooms

This study investigated the actual logMAR and contrast sensitivity demands in a cross-sectional sample of kindergarten through grade 12 classrooms in New York city. This was done to consider the potential benefit in optimising the specificity of visual acuity-based screening...

Comparison of visual acuity testing in clinic versus at home

The authors present a prospective cohort study including children aged three to 12-years-old with and without ocular pathology. Visual acuity was assessed using both an M&S Smart System in clinic, using different protocols depending on the age of the child....

Improvement of visual acuity with dichoptic training for amblyopia

This study evaluated the effectiveness of dichoptic amblyopia treatment using the Bynocs AmblyGo programme in reversing various types of amblyopia in a retrospective cohort. At recruitment, all patients had demonstration of the treatment. Patients continued treatment at home via internet-connected...

Children’s visual acuity test without professional supervision

With increasing outpatient demand there has been an innovative shift to involve patients managing their own condition. This article compares visual testing carried out by an orthoptist with usual clinical methods, an orthoptist using the iSIGHT Test Pro and a...

Retinal thickness and visual acuity change correlations after amblyopia occlusion therapy

This prospective study aimed to assess change in retinal nerve fibre layer (RNFL) and macular thickness, and clinical correlations with visual outcomes, after amblyopia treatment in 30 children with moderate to severe amblyopia. Mean age of children was 5.26 ±1.65...

Visual acuity improvement in amblyopic eyes following fellow eye vision loss

The authors present a systematic review with the aim of reporting how frequently and to what extent amblyopia recovers following the loss of vision in the fellow eye and identify any potential clinical predictors. Studies including adults with amblyopia and...

More sensitive visual acuity test for age-related macular degeneration

Age-related macular degeneration (AMD) is the leading cause of blindness in the developed world. Primarily associated with ageing, genetic factors and lifestyle choices such as smoking also play a contributory role. Patients with early AMD, characterised by the development of...