World Chocolate Day - does dark chocolate improve your vision?

Tina Patel Tina Patel
Tuesday, 04 July 2023 Share this blog: Facebook Twitter LinkedIn Copy link Copy Link

In celebration of World Chocolate Day 2023 on July 7th we wanted to explore the potential link between chocolate and good eye health.

world chocolate day

Chocolate consumption in Europe is believed to have started in 1550. Dark chocolate contains antioxidants that can reduce the risk of inflammation and flavanols that may improve heart health. It also contains polyphenols that may promote good gut bacteria. According to some scientists and recent studies, some say indulging in this delicious treat could even improve your vision.

Dark chocolate improves visual acuity and contrast sensitivity

A randomised clinical trial published by Jeff C. Rabin in Jama Ophthalmology in 2018 reported that eating a bar of dark chocolate leads to improved visual clarity and contrast sensitivity in the 2 hours after consumption.

In this study conducted by researchers at the University of the Incarnate Word Rosenberg School of Optometry in San Antonio, 30 adults were given Trader Joe's dark chocolate and milk chocolate to eat at separate times. The study then used eye charts on the participants and found that those who consumed the dark chocolate demonstrated higher visual acuity and small letter contrast sensitivity than those who consumed the milk chocolate.

Jeff C. Rabin and his team of researchers concluded that better visual acuity experienced by these adults might be linked to increased blood flow caused by dark chocolate. The flavanol compounds in dark chocolate have a range of benefits, including improving blood flow to the heart and the brain, decreasing blood pressure, preventing blood clots and combating cell damage.


Dark chocolate may not improve vision

A similar randomised clinical trial was published in 2019 by Jama Ophthalmology suggesting there is no link between eating dark chocolate and improved vision.

However, this study tested the effects of small portions of chocolate on 22 healthy adults and did not rule out the possibility of benefits. The German researchers wrote, 'further trials with larger sample sizes would be needed to rule in or out possible long-term benefits confidently.'

Is dark chocolate good for your vision or not?

While there is no concrete evidence to suggest whether dark chocolate is good for your vision or not, it certainly has numerous other health benefits and tastes delicious, so there’s no reason not to enjoy it.

How else can I keep my eyes healthy?

Proper contact lens care is also essential to maintaining good eye health. If you wear 2 weekly lenses, monthly lenses, or yearly contact lenses, they must be cleaned and stored properly every night.

Try comfi Daily Disposable contact lenses for an easy, convenient, and comfortable wear.

Eating a balanced diet and including moderate exercise into your routine will help to maintain good eye health. If you’re looking for foods to improve your vision, take a look at our blog 'Foods to Eat for Good Eye Health'.

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