Visors: these are unsafe because stray radiation may reach the eye. Solar filters: some claims that tests of these films of aluminised plastic have shown them to be safe with binoculars, but no filter is safe, according to the College, and the smallest pinhole or scratch will allow damaging radiation through. Sun caps: fitted over eyepieces of binoculars and telescopes. They are far from safe, the College has stated as they let dangerous radiation through, and could crack with heat. The College has also warned against looking through smoked glass, exposed photographic film and sunglasses.
Register now to continue reading
Thank you for visiting Optician Online. Register now to access up to 10 news and opinion articles a month.
Register
Already have an account? Sign in here