You searched for "visual system"

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Static subjective visual vertical (SVV) in the normal visual system

Graviception is the perception of a persons’ orientation relative to gravitational force. This can be measured by means of subjective verticals, which can be divided into three tests: subjective visual vertical (SVV), subjective postural vertical (SPV) and subjective haptic vertical...

How to examine the visual system Part 2: Accommodation, pupils, fundoscopy and additional tests

Examining the visual system can be a tricky skill for medical students to master, yet it is a task that is frequently tested in examinations. This is the second of a two-part series of articles, which together aim to improve...

How to examine the visual system Part 1: visual acuity, visual fields and eye movements

Asking candidates to perform an examination of the visual system, either as part of a full cranial nerve exam or as an individual entity, is a common station in practical examinations during medical school. It is important to practise for...

Patients with low vision benefit from optical sector seeing ‘beyond the eyes’

Patients with low vision are benefitting from an initiative developed by Visualise Training and Consultancy and funded by Thomas Pocklington Trust. Seeing Beyond the Eyes has released its impact report which highlights a huge increase in the number of optical professionals who will now refer patients with low vision to vital support services – up from only 9% to an impressive 96%.

Vital dyes in ophthalmology

This comprehensive review gives an excellent summary of the uses and properties of the different dyes available to aid better visualisation and diagnoses in ophthalmology. The authors clearly display the pharmacological properties, molecular details, osmolarity and indications in clinical ophthalmology...

Orthoptic slit-lamp

Adaptations are described that allow the slit-lamp to be used to document squint disorders. Changes are made in the observation system, illumination system, for recording clinical findings and visualisation of clinical findings. The author includes the use of minus lens...

Use of polypropylene suture with glaucoma drainage tubes

The authors overview surgical techniques for initial non-valved glaucoma drainage device tube placement and a glaucoma drainage device tube extension using polypropylene suture as a guide wire and stabiliser in paediatric patients. The detailed technique for tube placement and tube...

All you need to know about PIC

This is a review article of punctate inner chorioretinopathy (PIC). The authors detail the epidemiology and clinic presentation of the disease. They recognise the challenge of an accurate diagnosis due to its resemblance to other posterior uveitic entities. Multimodal imaging...

Holoxica and UKE develop holographic demonstrations for ophthalmic surgical procedures

Holoxica has been working with surgeons at the University of Hamburg-Eppendorf Eye Clinic (UKE) to produce holograms and animations of various ophthalmic surgical procedures, including cataracts, PK (Perforating Keratoplasty)...

Videos - iStent Inject

Trabecular bypass surgery with iStent Inject enhances aqueous outflow from the eye , evidence of this is demonstrated through Angiographic visualization of aqueous humor outflow in studies conducted by Dr. Alex Huang M.D, Ph.D

Dacryoendoscopy in congenital nasolacrimal duct obstruction

This retrospective study demonstrates the role of dacryoendoscopy to identify causes of failed lacrimal probing in congenital nasolacrimal duct obstruction (CNLDO). Dacryoendoscopy was carried out in 13 children with refractory CNLDO. The lacrimal pathway was examined from puncta to the...

Detecting muscle insertion position by ultrasound

The purpose of this study was to investigate the accuracy to locate muscle insertion positions before and after strabismus surgery using wide-field ultrasound biomicroscopy with the bag / balloon technique. Thirty-nine muscles of 22 adult patients aged 34.7 ±15.5 years...