You searched for "virtual"

1881 results found

A case of Miller Fisher Syndrome and bilateral asymmetric globe retraction

Miller Fisher syndrome (MFS) is a rare, acquired nerve disease that is considered to be a variant of Guillain-Barré syndrome. It was first recognised by James Collier in 1932 as a clinical triad of ataxia, areflexia and ophthalmoplegia. Later, it...

Vital dyes in ophthalmology

This comprehensive review gives an excellent summary of the uses and properties of the different dyes available to aid better visualisation and diagnoses in ophthalmology. The authors clearly display the pharmacological properties, molecular details, osmolarity and indications in clinical ophthalmology...

Retinoblastoma management update (part 2): treatment, screening and surveillance, long-term follow-up and new developments

Retinoblastoma treatment requires significant multidisciplinary input, but early detection through raising awareness remains key to improving outcomes. In the second article of a two-part series, Manoj Parulekar discusses retinoblastoma management, screening and research. This article has been published in two...

Orbis named winner of 2023 Amazon Web Services IMAGINE grant for non-profits

Orbis will work with Amazon's cloud computing arm to expand access to artificial intelligence-assisted eye screenings in Asia and Africa.

The assessment of pupils and 
pupillary reactions

Understanding pupillary reactions is vital in understanding basic neuro-opthalmology. It is a skill required in eye casualty, clinics and perhaps most importantly, exams. To start at the beginning, the pupil is the central aperture of the iris, its size controlling...

Cytomegalovirus retinitis post intravitreal triamcinolone in an immunocompetent patient with juvenile glaucoma

Figure 1: Fundus photograph shows active CMV retinitis four weeks after IVTA in the right eye. Figure 2: Fundus photograph of the left eye with no CMV retinitis; atrophic disc as a result of juvenile glaucoma. Case report A 29-year-old...

Usefulness of gonioscopy to investigate cause of corneal oedema after cataract surgery

A 72-year-old man with ocular hypertension presented three months after routine right phacoemulsification and toric intraocular lens (IOL) implantation with a two-week history of an irritated right eye and a sudden deterioration in right vision. His preoperative spherical equivalence was...

What not to miss in neuro-ophthalmology Part 2

As mentioned previously there are several conditions in neuro-ophthalmology that should not be missed by the general ophthalmologist as well as ophthalmology trainees. We discussed in the first part some of these conditions including third cranial nerve palsies, giant cell...

Accommodation in children

The purpose of this pilot study was to establish typical accommodative responses at 1/3m in children to targets of varying complexity and visual / cognitive demand. This was a study of 18 children aged six to seven years and six...

Perception of depth in 3-D media

The aim of this study was to evaluate the relationship between clinical measures of stereoacuity and the perception of depth in 3-D entertainment media. Fifty-seven subjects aged 16-62 years with stereopsis and no strabismus were assessed. Monocular blur was used...

RaScaL Study

The RaScaL study was a six month, single-centre, controlled, prospective phase I/II study in which subjects with diabetic macular oedema (DME) and associated peripheral nonperfusion on ultrawide-field fluorescein angiography (UWFA) were randomised to: (1) study arm: ranibizumab (0.5 mg) injection...

Exploiting nature’s randomised trials of eye disease

Confounding and reverse causation in observational ophthalmic epidemiology Traditional observational studies are inherently limited in establishing a causal effect of an exposure on an outcome of interest. One fundamental limitation is confounding, whereby causation is incorrectly attributed to a third...