A survey of 2,000 adults found that 49% are clueless when it comes to nutrients and vitamins that can improve eye health. Less than one in 10 recognize zinc as important for maintaining healthy eyes. And only 45% realize that their diet can directly affect their eyes. However, 48% associate carrot intake with good eye health, and this is where UK knowledge about visual well-being and nutrition seems to stop.
Statistics came up in a study "EyeQ" from Optrex to understand the true eye health intelligence in the country.
David Cartwright, optometrist and president of the Eye Health UK charity, said: "Boosting your EyeQ" can save your eyesight.
"There are one million people in the UK living with preventable vision loss, and while lack of regular eye exams is perhaps the greatest risk of preventable vision loss, lifestyle factors also play a significant role.
"Understanding that your diet, how active you are, whether you smoke and protecting your eyes from the sun's harmful UV rays can affect your eye health, helping to prevent you from suffering unnecessary visual impairment in the future."
The study also found that while the eye is the fastest moving muscle in the body with two million moving parts, the eyes usually remain a much lower priority than many of the other muscles used every day.
Only one in ten said they take preventative measures to take care of long-term eye health.
And only seven percent estimate they know a lot about the eye and how it works.
More than half also admitted that eye care is not part of their daily routine, although 67% admit they actively care about long-term eye health.
In fact, in one year, nearly half of adults spend less than £ 15 on eye care, excluding glasses, but spend a lot on their physical appearance each month, including hair, skin and beauty regimens.
Most worryingly, eight out of ten spend long periods watching a screen in their free time, according to research by OnePoll.
And in the last 12 months, 48% have suffered from tired eyes, while 56% have itching or eye pain.
Sandra Tovio, spokeswoman for Optrex, said: "Neglecting our eyes is too easy for many of us, and knowing exactly what you can do daily can be difficult.
"Optrex's ambition is to help as many people as possible to maintain optimum eye health.
"We leverage our years of experience to create ProVision, a supplement formulated with scientifically proven ingredients.
"This includes zinc, vitamin B2 and DHA, which help maintain normal vision, and magnesium, which helps contribute to normal muscle function."