We've used this product before, during the annular eclipse near Susanville, CA (May 2012). They work well, give a pleasing orange sun, and yes, we can still see with our eyes. Our eyes received absolutely no damage. Unlike other filters, these do not limit the viewing time. Another set we used to have from another compnay had a 10 second recommended limit! For safety, we threw those away. Remember, that any visual filter is not sufficient when used with a telescope! The dim light which passes through the filter is magnified, and still is dangerous. This filter does work well in front of a little digital camera, however.