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Practical phacodynamics – making the most of your phacoemulsification machine

Understanding phacodynamics is appreciating the subtleties in the dynamic changes of the fluidics and the ultrasonic power delivered. Kristina Southcott explains. Increase my vacuum! Increase my bottle height! Increase my phaco power! I frequently observe the above commands being directed...

Saccadic measurements in intermittent exotropia vs fusional amplitude

The authors investigated the correlation between fusional convergence amplitude and saccades during the shift from exotropia to binocular fixation during the cover / uncover test. This was an observational study of 15 patients (six female, nine male) with intermittent exotropia....

Testing of binocular contrast sensitivity as an objective measure of severity in intermittent exotropia

The purpose of this study was to compare the binocular contrast sensitivity ratio (measured with the Vision CSV-100 vector chart) between 40 intermittent exotropia patients and 40 normal controls. The authors also evaluated the effect of intermittent exotropia compensation status...

PALs use for convergence excess esotropia

This retrospective study includes a disparate group of 39 esotropic patients with an accommodative element from two different clinics with differing prescribing practices. Seven children were excluded due to previous treatment or insufficient follow-up. In all patients single vision glasses...

BT for intermittent exotropia

This study aimed to evaluate the effect of botulinum toxin (BT) on the amount of deviation and fusional control state of intermittent exotropia. Twenty-one patients (five male and 16 female) aged five to 18 years with progression of exotropia were...

Intraocular Lens Surgery

This book is a valuable update on understanding IOL surgery for ophthalmologists in training and in practice. Broadly, the book is divided into six sections dealing with three main concepts: 1) IOL selection for routine and complex scenarios; 2) IOL...

The orthoptic report – what does it all mean?

An orthoptist report may well look like a piece of Japanese Shodo, however, it does in fact contain some extremely useful information. This piece will briefly explain some of the common brush strokes seen on a report. There is some...

Assessing and treating achromatopsia

This literature review considers clinical characteristics (pendular nystagmus, poor visual acuity, lack of colour vision and marked photophobia), genetics (autosomal recessive disease, with CNGA3, CNGB3, GNAT2, PDE6C, PDE6H and ATF6 gene mutations), diagnostic options (OCT and fundus auto fluorescence), and...

Ophthalmic Aid to Eastern Europe (OAEE)

Peter Cackett, Tim ffytche and Dr Irina Gout reflect on historic ophthalmic aid sent to Eastern Europe. This article was written prior to the horrific events in Ukraine. An appeal for funds and equipment may be made by OAEE later...

Adaptive optics imaging: resolving single cells in the living eye

The human retina is unique in the central nervous system (CNS) in that it can be directly visualised non-invasively. Technological advances of several imaging modalities, including optical coherence tomography (OCT), multichannel scanning laser ophthalmoscopy (SLO) and fundus photography, have afforded...

PRPF31-related retinitis pigmentosa and asymptomatic carriers

The authors present a study of 21 patients with variants in the PRPF31 gene classified as pathogenic or likely pathogenic. These variants are caused by autosomal dominant retinitis pigmentosa (RP-11). Between January 2020 and November 2021 patients underwent tests of...

On the wrong track

A 65-year-old very high myope lady presented with sudden blurred vision down to count fingers to her right eye after a short and sharp pain. She also described seeing a black swirly line and as all these symptoms were exactly...