You searched for "vision"

2368 results found

Use of RAPDx device with optic nerve disease

The authors have previously reported on use of the RAPDx device for evaluating relative afferent pupillary defects (RAPD). RAPDx objectively determines the magnitude of RAPD by presenting light stimuli alternately to pairs of eyes with laterality. The parameters of amplitude...

Differential inhibition of EAU by CTLA4 and IL-6

Cytotoxic T lymphocyte antigen-4 (CTLA4) binds both CD80 and Cd86 and inhibits T lymphocyte activation via CD28. Il-6 is a pleiotropic cytokine that has been associated with many autoimmune conditions including uveitis. Blockade of these molecules by either CTLA4-Ig, a...

N-T asymmetry in tracking eye movements

The current study aimed to quantify and compare the visual tracking responses of two sensory induced strabismic juvenile monkeys during monocular smooth pursuit, ocular following response and optokinetic nystagmus (OKN). Monkey 1 had esotropia and monkey 2 had exotropia. Both...

Ametropic amblyopia and stereopsis

This study aimed to evaluate the correlations between ametropic amblyopia (hypermetropic – 110, myopic – 30, and astigmatic – 65) and stereopsis in 205 children – mean age of 5.2 years ±1.8. For near stereopsis, significant results were found for...

Testing fusional amplitude

The purpose of this study was to evaluate the effects of varied testing distance and order of testing on fusion amplitudes in subjects with normal eye examinations, along with impact of examination encouragement and subject level of alertness. Average age...

Evaluating ocular motor functions

Traditionally orthoptists are specialised in assessing ocular motor disorders. This article introduces the ocular motor score as a new clinical tool for screening and follow-up for children and young adults. The protocol consists of 15 tests such as stereoacuity, strabismus,...

Vertical disparity effects on horizontal fusion

This study was designed to investigate the effect of induced vertical disparity by prisms on horizontal fusional reserves at near distance. One hundred and seventy students were recruited and vertical disparity was induced by small vertical prisms of 0.5 and...

Positives and negatives of managing diplopia in adults with prisms

This study recruited consecutive patients prescribed prisms during a two-year period, within set criteria of a deviation up to 30 prism diopters, good fusion, willingness to wear prisms and no previous unsuccessful use of prisms. The majority of cases had...

Computer-assisted surgery in the orbit

In this paper the authors describe the growing use of computer-assisted surgery in ophthalmology. It is already described as a powerful adjunct in neurosurgery and sinus surgery and here they describe their experience of using it for the orbit; specifically...

Using a fenestration technique for partially accommodative esotropia

The authors evaluate a fenestration technique which is described as a modified sutureless hang-back recession, for cases of partially accommodative esotropia, in a prospective non-controlled cohort. Children under 10-years-old with full accommodative correction and a partially accommodative esotropia between 10...

Potential mechanism of over / under actions of inferior oblique muscles

In this paper, the authors hypothesise that fusional vergence adaptation, in patients who can fuse in at least some gaze positions, can cause curvature of the non-fixing eye movement paths of patients with apparent overaction or under action of the...

Long-term improvement of stereopsis in intermittent refractive esotropia

This was a retrospective study to review the records of patients with refractive accommodative esotropia (RAET) to determine long-term stereoacuity (SA) improvement in those that showed initial poor or no stereopsis. The study included 79 patients; 54% male and mean...