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The refractive index in the eye lens – implications for clinical practice and optical design

The eye may appear to be a comparatively simple organ and yet its optical system is complex and continues to be a source of investigation and research. The major optical elements are considered to be the cornea and the lens...

Ocular manifestations of multiple sclerosis: an overview

Multiple sclerosis (MS) is an autoimmune demyelinating disease of the central nervous system (CNS), in which there is dissemination of lesions in time (two or more clinical events) and space (multiple lesions seen on brain and spinal imaging). The pathophysiology...

Blinking blepharitis has a lot to answer for…

Never ignore the small things’…someone once said. There is no doubt blepharitis is one of the most common eye conditions encountered daily, but with the typical pressures of a busy outpatient department, the management of more obvious, sight-threatening conditions necessarily...

The future of binocular viewing systems?

I recently had the pleasure to visit Vision Engineering’s headquarters and manufacturing facility in Woking, UK. Vision Engineering have built an international reputation for engineering microscopes that provide 3D visualisation without the use of traditional optical eyepieces. Although the company...

Blame the lens – not its position – in refractive surprise

Aetiology of postoperative refractive surprise Weber coined the term “wrong eye, wrong intraocular lens, wrong patient” in 2008 as an aide memoir of major factors believed to underlie refractive surprise – defined as a significant unintended difference between dioptric refraction...

A rare case of endogenous panophthalmitis: Nidus from an E. coli urinary tract infection

Endogenous bacterial endophthalmitis (EBE) is a form of severe inflammation caused by haematogenous spread of a virulent bacterium from a nidus elsewhere in the body to intraocular tissues. It is a rare occurrence and only constitutes around 2–8% of all...

ABDO College and bookshop at 100% Optical

At 100% Optical, ABDO College will be offering attendees the chance to learn more about ABDO College courses, from the popular optical assistant course through to ophthalmic dispensing and contact lenses optician qualifications.

Headaches in ophthalmology (part 2)

Ophthalmologists see a large number of patients with headaches or facial pain in the ophthalmic outpatient clinics or in emergency clinics. Over two articles, I will discuss several causes of headaches, ocular manifestations and proposed management and referral options. It...

What's trending Jun/Jul 2019

A round-up of the eye related hot topics that have been trending on social media over the last few weeks. #beeping #EasterEgg Beeping Easter eggs allow blind and visually impaired children to participate in the quintessential Easter activity for children...

How the development of Glaucoma Guidelines, Glaucoma Toolkit and GLASS training and the Glaucoma nurse training can effect change in Nigeria

In July 2024, a combined training, led by Fatima Kyari, was run in Abuja, Nigeria to facilitate a multifaceted upskilling in glaucoma management. The first week comprised of inviting 36 doctors practising glaucoma from around Nigeria’s 36 states, including the...

Corneal dystrophies simplified

Based on biomicroscopic and histopathologic features, corneal dystrophies can be broadly classified into epithelial, Bowman’s layer / anterior stromal, stromal, and endothelial dystrophies. Corneal dystrophies are a group of inherited, bilateral, gradually progressing, non- inflammatory conditions caused by accumulation of...

The fragile p-value

Abdus Samad Ansari explores the limitation of the p-value and the application of the fragility index in clinical trials. Clinical trials and tribulations? The restoration of vision or more purely the gift of sight is an aspect of care that...