Atlético de Madrid midfielder Marcos Llorente is known not only for his athletic discipline but also for his commitment to health and wellness. In recent months, the Spanish player has drawn attention for a peculiar accessory that has gone viral: his yellow and red glasses, which he claims are meant to “protect biology.” What started as a curiosity has now become a trend blending fashion, science, and well-being.

From the Gym to Science: The Rise of the Blue Light Filter

Marcos Llorente’s now-famous glasses aren’t just a fashion statement. Their use is linked to blue light, a type of radiation emitted by screens and artificial lighting that, according to several studies, can cause eye strain, disrupt rest, and even affect sleep when absorbed in excess—especially at night.

Blue light filters, popularized by the Atlético star, come in two main types: daytime models, with yellow or clear lenses, and nighttime versions, with deep red tones that block almost all blue light. In both cases, the goal is to reduce exposure to artificial lighting and promote a more natural visual balance.

Among the most recommended options are Bloomoak, ideal for people who spend long hours in front of screens, and HAWKERS Cosmetic Yellow, which combine sleek design with a category 1 filter suitable for indoor use or cloudy days. At night, glasses like Solmoon —similar to Llorente’s— help reduce visual stimulation before bedtime and encourage the production of melatonin, the sleep hormone.

Between Fashion and Wellness

The trend sparked by Llorente has prompted an intriguing debate: are yellow glasses genuinely effective, or just a passing fad? Experts agree that, when used correctly, they can indeed improve visual comfort and reduce eye fatigue, especially for people who work under artificial light or spend long periods on digital devices.

However, specialists also warn that not all models offer the same benefits, making it important to choose certified products with proven optical quality.

Beyond social media buzz and the viral “hype,” Marcos Llorente’s choice reflects a growing concern among elite athletes: taking care of the body in a holistic way, beyond just physical training. And while yellow glasses may have become a stylish accessory, their practical use shows that science and performance can go hand in hand — even when it means looking at the world through a different color.