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1847 results found

Disc-fovea angle measurements for objective cyclotorsion review

The author measured the disc-fovea angle (DFA) in 249 healthy people (81 male, 168 female) as part of a retrospective study of 44 to 70-year-old adults. These were grouped as (1) aged 44 / 45 years, (2) aged 59-70 years,...

A comparison of colour vision tests in the presence of contrast sensitivity loss

This study analyses the effect of contrast sensitivity (CS) loss on colour vision (CV) testing, using a variety of colour vision tests. The authors used a computer model for CS loss to determine its effect on CV testing scores for...

Diagnostic accuracy of different keratoconus detection indices of pentacam in paediatric eyes

This is a retrospective study of 432 non-keratoconic eyes compared with 48 eyes with keratoconus (KC) or forme fruste KC (FFKC) in a paediatric population in Cairo, Egypt between December 2013 and October 2018. The authors discuss the rationale of...

The risk factors associated with isolated microvascular third nerve palsy

The authors used the Rochester Epidemiology Project for this retrospective case review of third nerve palsy. Inclusion criteria was adults >18 years, with new onset isolated microvascular third nerve palsy diagnosed within a 36-month period, with recovery or significant improvement,...

Randomisation, confounding & observational methods in ophthalmic epidemiology

Randomisation and confounding Understanding the relationship between an exposure and an outcome of interest is the central challenge in ophthalmic epidemiology. The exposure may be aetiological, taking the form of a putative risk biological factor, or therapeutic, in the form...

Finasteride and central serous chorioretinopathy

The pathophysiology of central serous chorioretinopathy (CSC) is complex and has not been fully elucidated. Suggested theories include hyperpermeability and increased hydrostatic pressure in the choroidal vasculature, which creates RPE detachments overwhelming the RPE barrier function, leading to accumulation of...

Binocular single vision (BSV)

Introduction In this article I will try to summarise some of the definitions, tests and assessments performed in the strabismus clinic to assess patient binocular potential. This is a key feature of strabismus assessment, especially in adults, and it will...

The International Council of Ophthalmology: what is it and is it useful for UK ophthalmologists?

ICO Director for Examinations and Assessments, Simon Keightley, explains the history and role of the organisation today, as well as outlining recent changes to the ICO examinations. The International Council of Ophthalmology (ICO) is the only international medical specialty organisation...

“Beware of the pigment”

Using some captivating artwork, Iheukwumere Duru describes key features of pigment dispersion syndrome. Pigmentary dispersion syndrome (PDS) leads to pigmentary glaucoma (PG) in approximately 35-50% of patients with the condition [1]. PG is the leading cause of non-traumatic blindness in...

The ‘theatre of the mind’: Charles Bonnet Syndrome and Esme’s Umbrella

The founder of Esme’s Umbrella shares her experience with the poorly understood condition Charles Bonnet Syndrome and the creation of the campaign. Many years ago, when I was a young actress, I was in an American play called ‘Butterflies are...

The approach to trabeculectomy postoperative complications

Performing a trabeculectomy is like giving birth to a baby. It may be traumatic and there is scope for devastating error but once the operation is completed only then does the real work begin. The bleb must be nurtured into...

VISION 2020 LINKS: COECSA Fellowship examination goes from strength to strength

Eye health problems and access to diagnosis and treatment is an important issue throughout low- and middle-income countries (LMICs), and particularly on the African continent, where quality of life is drastically affected by poor vision, blindness and deteriorating eye health,...