You searched for "Refraction"

3066 results found

Characteristics of limbal lymphatic vasculature on confocal microscopy

This ex vivo study aims to describe the morphological characteristics of the human limbal lymphatic vasculature using confocal microscopy and immunofluorescence. Twelve corneal specimens are obtained from human donor eyes. These corneal buttons are not suitable for transplantation due to...

At least 70 percent of cataract patients could benefit from toric IOL

More than two-thirds of cataract patients could benefit from toric intraocular lenses (IOL), according to findings presented at 100% Optical. Consultant ophthalmologist Nigel Kirkpatrick set out how astigmatism is a significant issue for cataract surgery patients during a main stage...

An update on idiopathic intracranial hypertension

The incidence of Idiopathic intracranial hypertension (IIH) is increasing, likely in line with the worldwide epidemic of obesity. To date, there have been revisions in the terminology used and diagnostic criteria for IIH; these recognise the need to exclude secondary...

International variations in ROP treatment

A retrospective cohort review of 48,087 premature infants weighing <1500 gm between 24 to 27 weeks gestation, from 11 high income countries in Australia, New Zealand, Canada, Finland, Israel, Japan, Spain, Sweden, Switzerland, Tuscany (Italy) and the UK . By...

Dynamics of interocular suppression

The main aim of this study was to determine the development of the depth of interocular suppression in the course of occlusion treatment in amblyopia as well as its correlation with changes in visual acuity. The authors investigated whether presence...

Investigating the link between corneal clarity and statin use

Transparency is a vital attribute of the cornea, necessary in preserving healthy vision. Maintaining this requires the collective input of the various layers of the cornea. Mostly, the layers implicated in this are the corneal stroma and endothelium [1]. Our...

Tumour characteristics influencing visual field outcomes

This retrospective study aimed to explore correlations between pituitary tumour characteristics which influenced visual field changes. Cases of transsphenoidal surgery from a six-year period resulting in a pathologic diagnosis of pituitary adenoma from a single centre were identified. Individuals were...

Platelet rich fibrin membrane for descemetocele

This case series described the use of a novel technique in the treatment of descemetocele. Three patients developed descemetoceles following infective keratitis with impending risk of corneal perforation. Platelet rich fibrin (PRF) membrane was prepared using 8ml of fresh venous...

Toxic nutritional optic neuropathy (TON)

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....

The use of toxin in paediatric strabismus

Strabismus is a common condition that affects up to 5% children and can be associated with abnormal visual development, double vision, loss of depth perception and impaired binocularity [1]. It can also cause cosmetic concerns, negatively impact psychosocial wellbeing and...

The embryology of the eye

Nobody claims to like embryology. At least nobody I know. It has been a neglected part of the curriculum since time immemorial and a vicious cycle occurs in which those with an incomplete understanding fail to appreciate the inherent beauty...

From dry eyes to glaucoma: How the menopause impacts your eyes and what to do about it, according to an optician

Menopause, much like entering puberty, comes with hormonal disruptions that change a woman's body and behaviour. Some of the first visible side effects are hot flushes, weight gain, and acne, accompanied by behavioural symptoms like mood swings, insomnia, and brain...