Aspects of the Subjective Refraction Test (better/worse] #optometry

Over the past few years, together with comments at the Work, Interaction & Technology Research Centre (Christian Heath and Helena Webb) at KCL, Will Gibson at the Institute of Education and the optometrists Bruce EvansDavid Thomson and Peter Allen I worked on research and knowledge exchange projects exploring the practical work of optometrists and developing communications training material. some of the research now has been written up and a few months ago a paper “Engendering Response: Professional Gesture and the Assessment of Eye Sight in Optometry Consultations” was published in Symbolic Interaction. This paper focuses on a particular procedure, the so-called Subjective Refraction that involves optometrist and patient in a sequence of interaction through which some of the characteristics of any corrective lens the patient might need, are determined. Some may recognise the test as the better/worse test as it is characterised by a procedure during which the optometrist alternates a patient’s vision by placing a lens in front of their eye as asking, “better with or without”. Our study here was particularly interested in the practice of placing the lens in front of the patient’s eye, a practice that we described as “professional gesture”. Although not specifically taught in optometric training the optometrists in our research deployed the lens by moving it in a particular way in front of the patient’s eye. The gestural movement of the lens in front of the patient’s eye followed almost exactly the same route through the air in all consultations that we filmed.  Our analysis reveals that such a carefully designed gesture is required for the optometrist to be able to arrive at reliable and robust data about the patient’s sight. They need the patient to respond to a series of different stimuli presented in front of them without reflecting about it.

Here is a video-abstract on the YouTube channel of Symbolic Interaction in which the lead author of the paper, Helena Webb, discusses the content of the paper and shows the gesture.

 

 

 

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