With the partial solar eclipse set to sweep across the UK on August 12, high street retailers are grappling with a significant shortage of certified eclipse glasses, leaving many skywatchers scrambling for safe viewing options. The demand has surged in recent weeks, catching suppliers off guard and raising concerns about public safety as people may resort to unsafe alternatives.
Why the Shortage Occurred
According to industry insiders, the shortage stems from a combination of factors: a last-minute spike in interest, supply chain disruptions, and the fact that many retailers underestimated the demand. "We've seen a tenfold increase in sales compared to the last eclipse in 2015," said Mark Thompson, a spokesperson for a major optical chain. "Our suppliers simply couldn't keep up, and we're now completely sold out across the country."
The Royal Astronomical Society has also noted that many online sellers are listing counterfeit glasses that do not meet the ISO 12312-2 safety standard, which is essential for protecting eyes from solar radiation.
Safety Warnings from Experts
Eye health professionals are urging the public not to use homemade filters, sunglasses, or unverified products. "Looking directly at the sun, even during an eclipse, can cause permanent retinal damage," warned Dr. Sarah Jenkins, an ophthalmologist at Moorfields Eye Hospital. "Only glasses with the CE mark and ISO certification are safe."
In response, some astronomy groups are organizing public viewing events with solar telescopes, offering a safe alternative for those unable to obtain glasses.
Impact on Schools and Community Groups
The shortage has also affected schools and community groups that had planned educational activities. Many are now scrambling to find alternatives, while others have cancelled viewing parties. "We had booked a local astronomer to host a session, but without glasses, we can't risk the children's eyesight," said a primary school teacher in Manchester.
Retailers are advising customers to check back closer to the event, as some shipments are expected to arrive in the coming days. However, with the eclipse only days away, experts fear that many will be left without proper protection.
What to Do If You Can't Find Glasses
For those unable to secure certified glasses, experts recommend using the pinhole projection method, which allows safe viewing of the eclipse without looking directly at the sun. Instructions are widely available online, and many science museums are offering workshops.
The next total solar eclipse visible from the UK is not expected until 2090, making this partial eclipse a rare event worth witnessing—but only safely.
