You searched for "visual acuity"
Development of testing protocols for high and low contrast visual acuity
Dysfunction of the afferent visual system, characterised by impairments in high-contrast visual acuity (HCVA) and low-contrast visual acuity (LCVA) have been demonstrated in some neurological conditions such as multiple sclerosis and Parkinson’s disease. HCVA and LCVA are also potential quantitative...
Prognostic factors for visual acuity in patients with LHON after gene therapy
This retrospective study investigates prognostic factors affecting the visual acuity after a single intravitreal injection of rAAV2-ND4 gene therapy in 53 patients with Leber’s hereditary optic neuropathy (LHON) with mutation at site 11 778. Patients were reviewed one and three...
Visual acuity outcomes in Coat’s disease by classification stage
This is a retrospective study of 160 consecutive patients with Coat’s disease under the Shields classification, with Snellen visual acuity (VA) pre and post treatment. Affected eyes were categorised based on the Shields classification: Stage 1: retinal telangiectasia onlyStage 2a:...
Comparison of two visual acuity test versions for different distances in a paediatric population
The authors present the findings of a study which aimed to determine whether using 2 metre and 4 metre retro-illuminated ETDRS charts are comparable in children. Order of testing was standardised (right eye, left eye, binocular), however different charts were...
Home testing versus in-person visual acuity test results
This retrospective review compared visual acuity findings by parents / carers during telehealth consultations compared with their subsequent in-person tests. Parents were given an information pack with testing instructions for home tests. The study included 43 patients (86 eyes) with...
Testing near or distance visual acuity for change during amblyopia therapy
In this study, the authors aimed to determine if any differences occurred between near and distance visual acuity (VA) in a cohort of childhood untreated amblyopia. They recruited 54 patients with mean age 4.9 years, SD 0.44. Mean VA in...
Predicting outcome for visual acuity in optic neuritis associated with multiple sclerosis
The authors present a retrospective cohort study to evaluate key predictors of long-term high-contrast visual acuity following optic neuritis associated with multiple sclerosis. All patients coded as optic neuropathy and assessed by a neuro-ophthalmologist over a 10-year period were screened...How to examine the visual system Part 1: visual acuity, visual fields and eye movements
Asking candidates to perform an examination of the visual system, either as part of a full cranial nerve exam or as an individual entity, is a common station in practical examinations during medical school. It is important to practise for...
How does a tablet based stereoacuity test perform in children with normal and abnormal visual acuity?
The authors present a prospective cross-sectional comparison study at a single centre. Paediatric patients attending an ophthalmology outpatient clinic and likely to be cooperative were approached to participate. Participants underwent stereoacuity assessment using the ASTEROID and Titmus tests, usually in...
