Refractive errors, amblyopia risk factors and vision screening in children aged 7-10 years in Aotearoa New Zealand.

Clinical Relevance: Vision screening is important for detecting undiagnosed vision conditions that are common in school-aged children. However, current vision screening protocols are poor at detecting vision conditions that are most common in the Aotearoa New Zealand paediatric population.

Background: Uncorrected refractive error and amblyopia are the most common causes of visual impairment in children.

Automated visual acuity estimation by optokinetic nystagmus using a stepped sweep stimulus.

Purpose: To describe an automatic system for objective measurement of visual acuity (VA) using optokinetic nystagmus (OKN). This pilot study tested the system's sensitivity and specificity for detecting reduced VA in healthy adults by comparing VA-OKN to VA with an Early Treatment of Diabetic Retinopathy Study (ETDRS) chart (VA-ETDRS).

Methods: Adult participants (age 30 ± 12 years) with either reduced VA (n = 11, VA-ETDRS > 0.

Eye care following pre-school vision screening: Data from the Growing Up in New Zealand study.

Aim: This study aimed to determine adherence with follow-up from the New Zealand pre-school vision screening programme. The study also examined associations between pre-school vision screening outcomes and cognitive measures assessed at the 54-month follow-up in the Growing Up in New Zealand study cohort.

Methods: A cross-sectional retrospective record review of pre-school vision screening outcomes and hospital ophthalmology records with linkage to Growing Up in New Zealand cohort study data.

OKN-Fast: Objective visual acuity threshold measurement using the optokinetic response.

Visual acuity (VA) is the gold-standard measure for the assessment of visual function, but it is challenging to obtain in non-verbal adults and young children. We present OKN-Fast, an objective, automated method for estimation of VA using a reflexive eye movement called optokinetic nystagmus (OKN) that does not require a verbal response from the patient (VA-OKN). We tested the method in a cohort of healthy adults (n=12) with good vision, who were also blurred using a lens.

The Winchcombe meteorite, a unique and pristine witness from the outer solar system.

Direct links between carbonaceous chondrites and their parent bodies in the solar system are rare. The Winchcombe meteorite is the most accurately recorded carbonaceous chondrite fall. Its pre-atmospheric orbit and cosmic-ray exposure age confirm that it arrived on Earth shortly after ejection from a primitive asteroid.