On Wednesday, August 12, skywatchers across the UK will witness a significant partial solar eclipse, with the Moon covering between 90 and 96 per cent of the Sun. This will be the most notable solar eclipse visible from the UK since the total solar eclipse of 1999.
Safe Viewing Methods
One safe way to watch the eclipse is from home through a window while wearing ISO 12312-2 certified eclipse glasses. These glasses protect the eyes from harmful solar radiation. However, demand has surged, leaving many retailers sold out or charging high delivery fees for last-minute orders.
Experts stress that only specially designed eclipse glasses meeting the ISO 12312-2 standard should be used. Non-certified glasses and regular sunglasses, no matter how dark, are unsafe as they do not block damaging radiation that can permanently injure the retina.
Health Risks and Expert Advice
The Royal College of Ophthalmologists reported about 70 cases of vision-related problems after the 1999 total solar eclipse, including many people who had looked at the Sun for less than a minute.
Mohamed Elalfy, a consultant ophthalmologist and president of the Royal College of Ophthalmologists, said: "The safest way to enjoy the eclipse is to observe it indirectly, such as by watching a live broadcast." He added: "Looking directly at the Sun during a solar eclipse can cause damage to the retina, potentially damaging the cells responsible for sharp central vision. Crucially, the retina has no pain receptors, so people will not feel the damage as it happens. Symptoms may only become apparent several hours later and can include blurred vision, a central blind or dark spot, distorted vision, reduced colour perception and increased sensitivity to light." He noted that while some recover, others may face permanent visual impairment.
Live Streams and Alternative Viewing
Starting at 6.10pm, two live streams of the eclipse will be broadcast from the rooftop of Flamsteed House at the Royal Observatory Greenwich. Viewers can watch on the Royal Observatory Greenwich's YouTube channel, where astronomers will provide expert commentary. Royal Museums Greenwich will also offer a separate live stream with a quiet feed, without commentary. The Express will run a live blog for those following along.
