SOS (Simplified Ophthalmic Statistics) Part 3: Which statistical test should I use (if any)?

P<0.05 is a statement that brings joy to many researchers. Arguably this is because inclusion of such a statement may increase the chance of acceptance for publication. Whilst statisticians and non-statisticians are united in trying to change this culture, cultural...

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...

SOS (Simplified Ophthalmic Statistics) Part 2: How to summarise your data and why it’s a good idea to do so

Studies involve capturing data. Statistical techniques allow data to be used to answer important research questions. A case series may have data on a handful of subjects but we are now entering the Big Data arena where datasets can be...

Decontamination and sterilisation of surgical instruments and medical devices

Ann-Marie Ablett is a Theatre Nurse and Team Leader who volunteers with Orbis. This has allowed her to gain a wealth of experience on ophthalmic procedures, nursing in under-privileged parts of the world, leadership, management and use of scarce resources....

Simplified Ophthalmic Statistics (SOS) Part 1: An introduction to data – how do we classify it and why does it matter?

Introductory statistics courses often start by explaining how data can be classified in different ways. What is not always clear is why you would need to know this. Catey Bunce and Tafadzwa Young-Zvandasara explain. The term data can be applied...

“We try our best”, but we should still be open and transparent

In a recent discussion with colleagues, someone recognised that many, when asked what they do, say, “I am a doctor”. Rather than “I work as a doctor”. This sense of belonging, pride and duty comes with responsibility. Becoming a surgeon,...