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 Professional ConductOcular examinationOcular DiseaseOcular Disease

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In this edition, we will explore the recent developments in eye tracking technology, discussing both the clinical and commercial applications of the technique. First, we investigate the future of contact lens material technology and listen in to a debate between leading experts in the contact lens field.

New Thinking in Avoiding Contact Lens Related Infection: Professor Philip Morgan, Professor Curtis Dobson & Dr Bianca Price

Eye Tracking Technology: David Thomson & Polly Dulley

Last published: August 2017

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    • 1.1.2 Understand how modern research into protein deposition and denaturation may influence the likelihood and course of microbial infection of the anterior ocular surface with particular reference to contact lens wearers.
    • 2.5.3 Understand the nature of two new developments (eye tracking technology and contact lens disinfection developments) in eye assessment and how they may influence future eye examination.
    • 5.2.1 Understand the nature of protein deposition and denaturation to better understand how developments here may lead to more effective disinfection and greater patient comfort.
    • 8.1.1 Understand the potential for eye tracking technologies to enhance and build upon current ocular movement techniques (cover test, motility) to assess anomalies of binocular vision.
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      Professor Philip Morgan, Professor Curtis Dobson and Dr Bianca Price 

      Contact lenses and their care have evolved greatly over the last few decades. However, wearers can still be troubled by symptoms of ocular irritation, a major reason for people dropping out of lens wear. Tear film constituents are known to deposit on and within the contact lens material contributing to these concerns. Clinical researchers, lens designers and lens manufacturers are trying to find new ways to address this. Researchers at the University of Manchester have been looking at tear film proteins and how they might be exploited to prevent contact lens infection and inflammation. Professor Philip Morgan, Professor Curtis Dobson and Dr Bianca Price discuss their recent research.

      • References
        Omali, N. B., Subbaraman, L. N., Coles-Brennan, C., Fadli, Z. & Jones, L. W. Biological and Clinical Implications of Lysozyme Deposition on Soft Contact Lenses. Optometry and vision science: official publication of the American Academy of Optometry 92, 750–757 (2015).
        Subbaraman, L. N., Glasier, M.-A., Varikooty, J., Srinivasan, S. & Jones, L. Protein deposition and clinical symptoms in daily wear of etafilcon lenses. Optometry and vision science: official publication of the American Academy of Optometry 89, 1450–1459 (2012).
        Suwala, M., Glasier, M.-A., Subbaraman, L. N. & Jones, L. Quantity and conformation of lysozyme deposited on conventional and silicone hydrogel contact lens materials using an in vitro model. Eye & Contact Lens: Science & Clinical Practice 33, 138–143 (2007).
        Subbaraman, L. N., Glasier, M.-A., Senchyna, M., Sheardown, H. & Jones, L. Kinetics of in vitro lysozyme deposition on silicone hydrogel, PMMA, and FDA groups I, II, and IV contact lens materials. Curr Eye Res 31, 787–796 (2006).
        Wright, E. A. et al. Preservation of human tear protein structure and function by a novel contact lens multipurpose solution containing protein-stabilizing agents. 38, 36–42 (2012).
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      David Thomson and Polly Dulley 

      In the last two decades, there have been great advances in vision testing and screening software. With cutting edge technology becoming more accessible, new techniques are being developed to examine ocular movements. A new clinical eye tracker provides a powerful tool for diagnosing and managing a wide range of conditions including binocular vision anomalies, various neurological conditions and reading difficulties. The device uses infra-red cameras to detect eye position to an accuracy of as little as one degree and records exactly where the patient is looking. David Thomson, former Professor of Optometry at City University, speaks to Polly Dulley about this latest innovation in eye assessment.

      • References
        Abadi, R. V. Vision and eye movements. Clinical and Experimental Optometry, 55–56. (2006).
        Delabarre E.B. A method of recording eye-movements. Psychological Review 8, 572–74. (1898)
        Heller D. On the history of eye movement recording. Eye movement research: physiological and psychological aspects, Toronto: CJ Hogrefe, 37–51. (1988)
        Wang, J. Pupil dilation and eye-tracking. A handbook of process tracing methods for decision research: a critical review and user's guide: Society for Judgment and Decision Making Series. pp. 185–204. ISBN 1-84872-864-6. (2011).
        Yang, S.-N., & McConkie, G.W. Eye movements during reading: a theory of saccade initiation times. Vision Research, 41, 3567–85. (2001).
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      • Programme references

      •  

        DOCET would like to thank the following for their contribution to this programme:

        New Thinking in Avoiding Contact Lens Related Infection

        • Professor Philip Morgan, PhD, MCOptom, FAAO, FBCLA, Professor of Optometry at University of Manchester
        • Professor Curtis Dobson PhD, Professor of Translational Biology at University of Manchester
        • Dr Bianca Price, Research Fellow in Medical Device Biology at the University of Manchester.


        Eye-Tracking Technology

        • Dr David Thomson, BSc(Hons), FCOptom, PhD, Managing Director of Thomson Software Solutions
        • Polly Dulley, MPhil, BSc(Hons) MCOptom, Optometrist
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