Llorente wears yellow lens glasses, eye experts: There is no evidence that blue light is harmful to the eyes

Atletico Madrid midfielder Llorente caused controversy due to wearing yellow lens glasses, and the Spanish Ophthalmology Association commented on this.

Llorente often shows off his lifestyle and health habits on social media. In a recent interview with Corbett Radio, he said he uses sunglasses with yellow lenses to filter out "excessive blue light" from computer or mobile phone screens.

The Atletico Madrid player sells these lenses through his own company. Currently, these glasses, priced at 199 euros, are sold out. Although the main purpose of this yellow lens is to reduce the "damage" of blue light to the eyes, the Spanish Ophthalmological Association points out that there is no evidence that blue light is actually harmful to the eyes.

"There are currently no relevant studies on humans, so no clear recommendations can be given on the potential harm of blue light to the eyes." Eye experts emphasized. Existing studies are limited to in vitro experiments or animal experiments, and were conducted under high-intensity blue light illumination.

Therefore, "While further research is necessary to determine public health measures, the use of blue light protective screens is not recommended at this time to prevent unproven damage." The Spanish Ophthalmological Association also stated that "there is no scientific evidence to support the use of these filters, as blue light has not been shown to cause significant visual impairment."

In fact, the level of blue light from screens is "well below" the level of blue light in the natural environment, and the level of blue light in either case is far from reaching the level of causing damage to the eyes. This means, "the potential for eye damage from blue light emitted by digital screens may be minimal or nonexistent."

Pediatric ophthalmologists explain that many regulations have been implemented to limit the amount of blue light emitted by digital devices. Because of these safety restrictions, the levels of blue light emitted by smartphone and tablet screens are not high enough to cause damage to the retina, so the recommended use of blue light filters is generally not required.

Prolonged use of digital screens may lead to "visual fatigue", which may be caused by a variety of factors, such as reduced blink frequency, accommodation changes, and glare. "These symptoms of visual fatigue are most likely caused by overuse of digital devices rather than the blue light itself."