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

1 August 2016 | | EYE - Cataract, EYE - Cornea, EYE - Glaucoma, EYE - Imaging, EYE - Neuro-ophthalmology, EYE - Oculoplastic, EYE - Oncology, EYE - Orbit, EYE - Paediatrics, EYE - Pathology, EYE - Refractive, EYE - Strabismus, EYE - Vitreo-Retinal
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...

Headache: the clue is in the eyes

1 October 2021 | | EYE - Neuro-ophthalmology, EYE - Imaging, EYE - General
A worrying cause of headache is raised intracranial pressure (ICP). Papilloedema is a vital clue for accurate diagnosis and performing fundoscopy is essential in detecting this sign. The authors review the use of fundoscopy in their own district general hospital....

Understanding spaceflight-associated neuro-ocular syndrome (SANS): what do we know?

2 August 2022 | | EYE - Oculoplastic, EYE - General
Introduction Formerly known as visual impairment and intracranial pressure syndrome (VIIP), space-related neuro-ocular syndrome (SANS) is defined by a collection of ophthalmic and neurological findings in astronauts after long-term spaceflight [1]. Changes in the eyeball, such as hyperopic shift, during...

Dans le Noir

1 June 2016 | | EYE - Cataract, EYE - Cornea, EYE - Glaucoma, EYE - Imaging, EYE - Neuro-ophthalmology, EYE - Oculoplastic, EYE - Oncology, EYE - Orbit, EYE - Paediatrics, EYE - Pathology, EYE - Refractive, EYE - Strabismus, EYE - Vitreo-Retinal, EYE - General
There is a restaurant in London where dinner is served in the dark. Not dim light or occasional infrequent light, but absolute pitch black darkness. Apparently the aim is twofold; to better appreciate the quality of the food as the...

Bovine pericardium scleral patch graft associated scleritis: Ahmed valve implant for pupillary block glaucoma

1 April 2016 | | EYE - Glaucoma, EYE - General
Processed bovine pericardium is a lyophilised collagen sheet used as a surgical armamentarium. It renders the material antigenically inert with minimal inflammation [1]. Sclera patch pericardium graft (Tutopatch) is a collagenous membrane derived from solvent preserved, irradiated bovine pericardium [2]...

Immunoglobulin G4-related ophthalmic disease – what is it? (Part 2)

3 April 2023 |
Part 2: Clinical presentation and treatment (see part 1 here) Introduction IgG4-related disease (IgG4-RD) is understood to have a vast clinicopathological spectrum; nearly every organ has had reported involvement. Similarly, IgG4-related ophthalmic disease (IgG4-ROD) is known to affect nearly every...

Act now: Professor Serge Resnikoff on making myopia a public health priority

3 April 2026 | | EYE - Paediatrics, EYE - Refractive
Over the past decade, myopia has shifted from a common childhood inconvenience to what global health leaders now call a “public health emergency in slow motion” [1]. According to Professor Serge Resnikoff, former Head of Eye Health at the World...

Jun/Jul 2017 Quiz

1 June 2017 | EYE - Cataract, EYE - Cornea, EYE - Glaucoma, EYE - Imaging, EYE - Neuro-ophthalmology, EYE - Oculoplastic, EYE - Oncology, EYE - Orbit, EYE - Paediatrics, EYE - Pathology, EYE - Refractive, EYE - Strabismus, EYE - Vitreo-Retinal, EYE - General
History A 57-year-old female patient presented with gradual painless diplopia over the last six months. Examination revealed restricted upward eye movements and 4mm proptosis which did not increase with Valsalva manoeuvre. Intraocular pressure was normal, no visual defects were noted,...

Apr/May 2014 Quiz 2

1 April 2014 | | EYE - Cataract, EYE - Cornea, EYE - Glaucoma, EYE - Imaging, EYE - Neuro-ophthalmology, EYE - Oculoplastic, EYE - Oncology, EYE - Orbit, EYE - Paediatrics, EYE - Pathology, EYE - Refractive, EYE - Strabismus, EYE - Vitreo-Retinal, EYE - General
History A 29-year-old woman presented to the emergency department with a two week history of floaters and patchy peripheral visual field loss in the left eye (LE). She had no relevant medical history and she was not on any current...

Diagnosis and management of IV cranial nerve palsy

1 October 2017 | EYE - Neuro-ophthalmology
Aetiology: Trochlear nerve palsy can be divided into acute or congenital. Congenital trochlear nerve palsy is usually noted in childhood with development of abnormal head posture. Various pathologies can lead to acute IV nerve palsy, most commonly trauma. Other causes...

Toxic nutritional optic neuropathy (TON)

2 August 2022 | | EYE - General
Toxic optic neuropathy are a group of conditions manifested by reduction of visual functions secondary to damage to the anterior visual pathways from exposure to a toxin. The implicated toxin could be work-based, food or drink related, or iatrogenic medication....

Internuclear ophthalmoplegia: a case study

3 June 2024 | | EYE - General
A 44-year-old patient presents with binocular, mostly horizontal diplopia when fixating on moving objects. This has been ongoing for approximately five years. He is known to have multiple sclerosis and had an episode of optic neuritis six years prior in...