Dr David Robert Grimes looks at the eye health issues that are making the news.
Lenses ‘zoom’ on command
Scientists at the University of California San Diego have developed a soft tunable lens that automatically shifts focal length when the wearer blinks twice (Li et al, 2019).
The basic principle behind this technology is electrooculography: the measuring of corneo-retinal standing potential between the front and the back of the eye. This changes in known ways when the eyes move in different directions, and typically a pair of electrodes attached to the face can then ascertain which way the eye is moving, and whether blinking has transpired.
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Glaucoma is the second leading cause of irreversible sight loss in the UK and affects over one million people, which is predicted to rise by 100,000 cases to 1.145 million people by 2030*.
The College of Optometrists has published its first issue of Ophthalmic and Physiological Optics (OPO), its flagship international and interdisciplinary research journal for contemporary vision science and optometry, with its new publishing partner Springer Nature this month.