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Can YOU spot the missing letter from the alphabet in this chart? Opticians release tricky puzzle designed to keep your eyes sharp
- The team at Optical Express has today adapted the traditional Snellen chart
- Patients are usually asked to read it from a distance to measure their sight
- But in this version, you are meant to spot the missing letter from the alphabet
- The chart, which has 149 letters in it, was released as part of World Sight Day
Stephen Matthews Assistant Health Editor For Mailonline
If you struggle to spot the missing letter from the alphabet in this tricky illusion, you’re not alone.
Opticians have today released the challenging brainteaser that they say can keep your eyes sharp.
The team at Optical Express has adapted the traditional Snellen chart millions of patients are used to seeing.
Instead of simply asking you to read it from a distance to measure your sight, they want you to find the missing letter.
The answer is at the bottom
Can you spot the missing letter? The team at Optical Express has adapted the traditional Snellen chart millions of patients are used to seeing
The adapted Snellen chart, which has 11 lines of 149 letters, was today released as part of World Sight Day.
It is estimated that 253 million people globally are living with some degree of vision impairment and 36 million are blind.
Stephen Hannan, clinical services director at Optical Express, said the firm wants to raise awareness of World Sight Day.
He said that ‘in a large number of cases’ impaired vision can be avoided through eye tests. Figures suggest 80 per cent of cases are avoidable.
WHAT IS AGE-RELATED MACULAR DEGENERATION?
Age-related macular degeneration (AMD) is a painless eye condition that leads to a gradual loss of central vision.
It is the most common cause of visual impairment in the UK and US.
AMD causes central vision to become blurred resulting in symptoms such as difficulty reading and problems recognising people’s faces.
It occurs when the macular – the part of the eye responsible for central vision – stops functioning effectively.
AMD usually affects both eyes, but the speed of progression can vary between eyes.
It is thought to be triggered by aging, smoking and genetics.
Mr Hannan added that he hopes ‘people will take a moment to appreciate their sight, bringing eye health to the forefront of our minds.’
The International Agency for the Prevention of Blindness launched World Sight Day six years ago.
This is not the first illusion designed to test your eyes that MailOnline has published.
Two weeks ago, Optical Express released another tricky quiz that asked people to name whether five colours were blue or green.
And the same firm last month created its own version of the Ishihara plate test = which is commonly used in eye clinics to diagnose colour blindness.
Its adapted version of the century-old method hid four glasses-wearing celebrities behind dots, including Elton John.
It comes after researchers at Columbia University in New York claimed in August that Viagra could restore sight to the blind.
A two-year trial led by the team suggested the little blue pills could stop age-related macular degeneration, or AMD, in its tracks.
The condition is the world’s leading cause of blindness, with about 600,000 Britons already thought to have suffered some loss of vision as a result of it.
Correct answer is F
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Can YOU spot the missing letter from the alphabet in this chart?