The German Federal Office for Radiation Protection warns that ordinary sunglasses provide insufficient protection during the solar eclipse on 12 August 2026 [1].

Using improper eyewear during the event can lead to permanent blindness. Because the retina can be burned by intense solar radiation, health officials are urging the public to avoid direct viewing without certified equipment.

Experts said that standard sunglasses, welding glasses, smoked glass, and viewing the event through a phone screen do not block enough ultraviolet and infrared light [1, 2]. Only certified eclipse glasses or pinhole-camera methods are considered safe for observers [1, 3].

The eclipse is visible across Germany as a partial event and in parts of Austria [4, 5]. The maximum partial phase in Germany is expected around 20:30 CET [6]. While a narrow strip of the Earth farther south will experience totality, those in Central Europe must remain vigilant about eye safety.

"Mit bloßem Auge sollte man die Sonnenfinsternis am Mittwochabend, auf keinen Fall beobachten, denn die Netzhaut kann schwere Schäden nehmen," the Tagesschau editorial team said [1].

Medical professionals highlighted the severity of the risk. Dr. Martina Schmitt of the Uniklinikum Erlangen said, "Normale Sonnenbrillen oder Schweißerbrillen schützen nicht ausreichend – nur zertifizierte Spezialbrillen oder eine Lochkamera sind sicher" [2].

A spokesperson for the Bundesamt für Strahlenschutz (BfS) said that a direct look into the sun can cause permanent damage to the eyes, which is why the agency recommends certified protective eyewear [1].

“Ordinary sunglasses, welding glasses, smoked glass, or looking at the eclipse via a phone screen do NOT provide sufficient protection.”

The warning underscores a critical gap between consumer perception and scientific safety standards. Many people believe that any dark lens provides a barrier against solar radiation, but the specific wavelengths that cause retinal burns are often invisible and penetrate standard UV-protected sunglasses. By emphasizing the failure of common alternatives like welding glass and digital screens, health authorities are attempting to prevent a surge in emergency ophthalmology cases following the event.