![]() ![]() Viewing the partial eclipse in London in 1954 - how not to do it The only totally safe way to watch a partial eclipse is by viewing it indirectly, using some form of projection. However, for most people, only a partial eclipse will be visible, and although the sky will become very dark, it will not be safe to look at the Sun without proper equipment and viewing techniques. Totality will last for about two minutes, depending on your location on the eclipse path. Only when the Sun is completely covered by the Moon - at total eclipse - is it safe to look at the event without protection.Īs soon as it reappears - producing the diamond ring effect - you must look away. Several crescent-shaped burns can be seen in the central retina, and these have resulted in blindness in this eye, with his vision reduced to below 20/400 (6/120). This picture shows a more extreme form of solar retinopathy in the left eye of a young man who stared unprotected at a partial eclipse of the sun. Viewing the eclipse unprotected rendered this man blind ![]()
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