You searched for "exposure"

553 results found

Air toxicity on retinal pigment epithelium

This study investigated the potential toxic effects of air on primary human retinal pigment epithelial (RPE) cells in vitro. Clinically during pars plana vitrectomy air is used as either a temporary tamponade during air-fluid exchange or mixed with gas to...

Association between serum 25-hydroxyvitamin D levels and age-related cataracts

Cataractogenesis occurs as a result of ageing, smoking, exposure to UV radiation and genetic predisposition. Antioxidants can reduce the cataract risk as found in animal models and humans and vitamin D is one of them. This epidemiological study based in...

Frontalis muscle flap for congenital ptosis

This is a review of 43 patients (47 eyes) with severe congenital ptosis who underwent a suspension procedure using a frontalis flap technique. The average age of patients was 6 +/-2.5 years, and all had a severe ptosis with an...

Light tolerance in infectious keratitis

The authors presented the findings of a study that aimed to identify the maximum irradiance (power received by a surface per unit area) that can be tolerated by photophobic patients with infectious keratitis (IK). They recruited 30 patients (14 women...

Learnings and trends in the management of open-angle and angle-closure glaucoma

To be truly disruptive, newer technologies need to offer a quality of life benefit over medication to a broad population of glaucoma sufferers. Evidence and converging trends in medical and surgical management of glaucoma were explored in counterpoint discussions and...

The blue-light hazard – is it true?

Simerdip Kaur takes a look at the latest ophthalmology-related news stories and asks which are based on facts and which are ‘fake news’. Headline: The blue-light hazard – is it true? Blue light is part of the visible optical spectrum...

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...

PUK after corneal crosslinking

This retrospective study aimed to report the incidence, characteristics, clinical presentations, risk factors, and the available treatment modalities of sterile peripheral ulcerative keratitis (PUK) post-corneal collagen crosslinking (CXL). In total 771 eyes of 474 patients operated for keratoconus or ectasia...

Could you mentor budding ophthalmologists in London?

King’s College London Ophthalmology Society is looking for ophthalmologists from any level based in a London hospital that would be able to give guidance and support to a medical student.

A tarso-conjunctival flap for paralytic ectropion

This is a review of 110 patients with paralytic ectropion who underwent a lateral tarso-conjunctival flap procedure. The technique involves fashioning a 4-8mm wide lateral tarso-conjunctival flap in a similar way to a lateral Hughes flap. This is then sutured...

Myopathic ptosis and lower lid retraction surgery

This is a description of a surgical technique which simultaneously addresses both the upper lid ptosis and lower lid retraction in patients with moderate to severe myopathic ptosis. The procedure was performed on 16 eyes of nine patients and involved...

Silicone rod for ptosis surgery

The authors report their results and complications associated with the use of silicone rod for frontalis suspension lid surgery. This was a retrospective study of 38 eyes (25 patients) with six months follow-up. The group included 19 males and six...