Hi-tech contacts that do LOTS more than help you see: From testing blood sugar to giving eye drops. They can even have a zoom lens!
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Hi-tech contacts that do LOTS more than help you see: From testing blood sugar to giving eye drops. They can even have a zoom lens!
Overnight hard contact lenses to correct short-sighted in children UV protection in hard and soft lenses helps protect the eyes Scientists are working on a hassle-free method of checking glucose levels with a contact lens that can measure glucose in tears.
Scientists are working on a range of smart contact lenses that can do everything from stopping your eyesight getting worse to checking your blood sugar levels. Here, RACHEL ELLIS looks at some of the latest things the humble contact can now do…
PREVENT SHORT SIGHT IN CHILDREN For short-sighted children who don’t want to wear glasses, there may be a rather ingenious solution: overnight hard contact lenses, which correct the eyes as the child sleeps so they don’t need glasses or lenses during the day. Short-sightedness causes distant objects to appear blurred while close objects can be seen clearly. It occurs because the eye grows beyond its normal length, so it’s more egg-shaped instead of being like a ping-pong ball.
The silicone lenses alter the shape of the eye, a process known as orthokeratology. They press on the cornea, the clear part at the front, which becomes misshapen with short-sightedness, reducing its curvature. And while not a cure, if used while the eye is growing, overnight lenses may prevent or slow down short-sightedness. Research suggests that the progression of short-sightedness is, on average, eight times slower in children who wore the overnight lenses compared with those using standard contact lenses.
James Wolffsohn, a professor of optometry at Aston University, Birmingham, and spokesman for the British Contact Lens Association, explains: ‘By putting a rigid lens on the eye before going to sleep, the pressure of that lens and the closed eyelid will massage the cornea, making it flatter to correct for the eye shape.
Source : Dailymail.co.uk