You searched for "epithelium"

333 results found

Upper eyelid ulceration as a presenting sign of frontal sinus mucocele

Introduction A sinus mucocele is an epithelium-lined sac filled with mucus and desquamated epithelium. It forms secondary to inflammatory processes that occur in a sinus with an obstructed ostium. Predisposing conditions include previous trauma, surgery, tumours, anatomical abnormalities, and chronic...

Viral uveitis

This review covers viral causes of anterior uveitis. A viral aetiology should be suspected when anterior uveitis is accompanied by ocular hypertension, diffuse stellate keratic precipitates or the presence of iris atrophy. Most common viruses associated are herpes simplex, varicella-zoster...

Maintenance therapy for CMV endotheliitis

Cytomegalovirus (CMV) has been associated with corneal endotheliitis, leading to endothelial cell loss and corneal decompensation. CMV corneal endotheliitis recurrence can affect between 5-60% of eyes after cessation of anti-CMV therapy. Each recurrence of endotheliitis has a detrimental effect on...

Same day air bubble removal after DSEK/DSAEK

A complete air removal on same day as descemet’s stripping endothelial keratoplasty (DSEK/DSAEK) leads to prompt restoration of the anterior chamber and thus has been hypothesised to assist with the recovery of endothelial function and promote graft adhesion. The results...

Full thickness macular hole after YAG PI

The authors report a case of macular hole post YAG peripheral iridotomy (PI) of a patient with pre-existing vitreomacular adhesion. Although a relatively safe procedure, some anterior segment complications are well documented such as corneal endothelium damage, rise in IOP,...

Pathophysiology of diabetic macular oedema: why combination therapy may be better

The prevalence of diabetes has continued to increase over the years. It is currently estimated that there are 382 million with diabetes worldwide in 2013, and that this figure is expected to rise to 592 million by 2035 [1]. In...

Aug/Sep 2014 Quiz 2

History A 27-year-old man presented to the emergency department with blurred vision and central scotoma in the right eye (RE) over the previous weeks. He had no relevant medical history and he was not on any current medication. However, he...

Patients blinded by stem cells! How safe are they really?

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: Patients blinded by stem cells! How safe are they really? Ever since the successful results following...

My top five: Innovative approaches to dry AMD

Age-related macular degeneration (AMD) is one of the leading causes of irreversible blindness in the developing world with its prevalence rising alongside age. In societies characterised by ageing populations, it is imperative we explore more effective treatment to alleviate the...

A unique case of macular burn from ‘toy’ laser

The first laser was created in 1960 and its name is an acronym for ‘light amplification by stimulated emission of radiation’. Laser technology has been used for medical, industrial, research and entertainment purposes in a variety of fields following extensive...

The challenge of chorioretinal folds in virtual eye clinics

Chorioretinal or choroidal folds are parallel striations involving the retina, retinal pigment epithelium (RPE), Bruch’s membrane, and inner choroid [1]. They can arise from compressive stress on these layers, and their presence often serves as a diagnostic marker for underlying...

Apr/May 2014 Quiz 1

History A 45-year-old man presents with left-sided epiphora. During a dacrocystorhinostomy (DCR), the wall of the lacrimal sac was noted to be bulky. The sac wall is biopsied and sent for routine histopathology examination. The pathologist notes a distinctive feature...