You searched for "correction"

3128 results found

Contrast sensitivity in myopic eyes

A classification system has been proposed for myopic maculopathy: grade 0 (no myopic retinal lesions), grade 1 (tessellated fundus), grade 2 (diffuse chorioretinal atrophy (CRA)), grade 3 (patchy CRA), and grade 4 (macular atrophy). Tessellated fundus is defined as the...

Treatment of progressive keratoconus

This study aimed to analyse the clinical results of accelerated iontophoresis-assisted epithelium corneal cross-linking (i-ON CXL) to evaluate the risk factors for keratoconus progression after treatment, and the safety and efficacy of re-treatment using epithelium-off CXL protocol in paediatric patients....

Using modified staging criteria to determine optic nerve invasion in retinoblastoma

This paper reports the use of a modified staging criteria for optic nerve invasion in extraocular retinoblastoma and its correlation with treatment outcomes in 21 patients. The average age at presentation was 41 months (7–120) and there were 14 unilateral...

Amblyopia information provided by chatbots – how readable and understandable is this?

The purpose of this study was to evaluate the understandability, actionability and readability of responses to frequently asked questions about amblyopia provided by ChatGPT-3.5, Bing Chat, Bard and the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) website, along with...

Feasibility and acceptability of virtual reality visual field testing compared to standard perimetry

The authors present a prospective pilot study which aimed to assess the feasibility and performance of the vivid vision perimeter (VVP). The VVP is a piece of software which can be used with off-the-shelf virtual reality (VR) headsets. Recruitment took...

What plane should be used for ultrasound measurement of the optic nerve sheath diameter?

This prospective observational study aimed to evaluate the differences between optic nerve sheath diameter (ONSD) between the patients’ two eyes and different ultrasound planes (transverse and sagittal). Participants were recruited over a two-year period from a single neurosurgical department. To...

What you learn after performing 10,000 cataracts

What do you do when the anterior chamber shallows, or the zonules give way? How do you handle the stubborn epinuclear plate? Raymond Radford shares the benefit of his experience when dealing with tricky cataract surgery. Firstly, you realise you...

Sutureless 27-gauge needle intrascleral intraocular lens implantation

The authors report on a prospective, non-comparative, interventional case series of patients undergoing sutureless intrascleral fixation of a posterior chamber three piece intraocular lens (IOL) using a 27-gauge needle for docking. Sutureless techniques have the advantage of not having complex...

Gemini Untwined: treating craniopagus conjoined twins

The authors discuss the successful separation of craniopagus conjoined twins at Great Ormond Street Hospital and the role of the ophthalmologist in such cases. Craniopagus conjoined twins are extraordinarily rare, occurring in only one in 2.5 million births and representing...

Two centuries later, braille is still as important as ever, says teenage sight loss campaigner

Braille, the system of raised dots that has enabled blind people to read and write, is as vital as ever, and has adapted to the advances of new technology, says RNIB, Scotland's leading sight loss charity.

Nerve head in healthy humans using OCT-angiography

Optical coherence tomography angiography (OCT-A) is a recent, dyeless, and noninvasive imaging technique for evaluating depth-resolved vascular status by capturing the dynamic motion of the erythrocytes. It provides the flow map of major vessels and capillary plexuses separately in different...

Effect of syringe-filling technique and risk for endophthalmitis after intravitreal injection of anti-VEGF agents

In this retrospective study the authors compare the risk for post-injection endophthalmitis between different anti-vascular endothelial growth factor (VEGF) agents and syringe preparation technique. This multicentre study included 197,402 injections. The drugs included in this study were three Anti-VEGF agents...