You searched for "Refraction"

2926 results found

Macular characteristics in unilateral idiopathic FTMH and fellow eyes

This retrospective observational study, conducted at a single site, aimed to compare characteristics of the macular structure and foveal pit in unilateral full-thickness macular hole (FTMH) and healthy fellow eyes. Full-thickness macular holes were further classified into three categories: (1)...

The ocular manifestations of COVID-19: an overview of current literature

Although respiratory symptoms are the most frequent manifestation of COVID-19, multi-organ involvement has been demonstrated, including ocular manifestations. The author investigates how the eye can be affected. The SARS-CoV-2 virus responsible for the COVID-19 pandemic has presented a significant public...

Blind veterans continue hillwalking passion thanks to power of VR

Imagine being a keen hillwalker who loves the outdoors but then being unable to enjoy it because of sight loss. Fortunately, many veterans of the Armed Forces who have visual impairment can climb their favourite mountains again, thanks to Sight Scotland Veterans.

The Global Vision Database

The overall goal of the Global Vision Database (GVD) [1] is to develop and deploy new and improved evidence on the prevalence of blindness and vision impairment (VI) globally. It is a repository which allows us to assess the causes...

Envision Glasses – A different take on a sight impairment wearable (part 2)

This is the second part of the review of the Envision Glasses (see Part 1 here), a wearable piece of assistive technology. Features From the main menu four feature modes can be chosen: Read, Identify, Find and Call. The Glasses...

General population perceptions of severity of strabismus vs. angle of deviation and gender

The authors investigate whether the potential bias of gender, type of deviation, or size of deviation affected how strabismus was perceived among a general adult population. Eight photos were generated (head shots) of white people aged 25–30 years – purposive...

Retinal traction during ERM peeling

This prospective study aimed to quantify the retinal thickening induced by epiretinal membrane (ERM) peeling and to correlate this thickening with postoperative retinal function. Twenty-five patients who required surgery for idiopathic ERM were included in the study. The authors performed...

Corneal hysteresis: An emerging biomarker in the management of glaucoma

Corneal hysteresis (CH) is gaining recognition as a valuable parameter in the management of glaucoma. Corneal hysteresis is defined as the difference between the inward and outward pressure responses of the cornea during deformation. This measurement reflects the viscoelastic properties...

ARN in North Africa

Acute retinal necrosis (ARN) is a rare cause of uveitis. This paper aims to outline the clinical features of 12 patients with ARN in a referral centre in Tunisia, North Africa. A retrospective review of case notes was carried out....

Reliability of kinetic perimetry in children and young adults

This study reports on normative visual field area, feasibility and repeatability of testing for a large sample size of healthy children and young adults, using Octopus semi-automated kinetic perimetry. Sample included 221 healthy volunteers aged 5-22 years. The study was...

Biodegradable plates in lateral orbitotomy surgery

This is a description of a new method for fixating the bone flap during a lateral orbitotomy. The technique involves the use of an absorbable lactide plate. This is warmed in a water bath to allow trimming and moulding to...

Effect of alcohol dependency on visual function

The purpose of this study was to evaluate visual function, attention and psychological profiles in consumer and abstainer alcohol dependency syndrome (ADS) patients in a Portuguese population. The study was a quantitative, descriptive, cross-sectional and correlational study over a one-year...