Meessen observes that Sun Miracles have been witnessed in many places where religiously charged pilgrims have been encouraged to stare at the Sun. He cites the apparitions at Heroldsbach, Germany (1949) as an example, where many people within a crowd of over 10,000 testified to witnessing similar observations as at Fátima. Meessen also cites a "British Journal of Ophthalmology" article that discusses some modern examples of Sun Miracles. Prof. Dr. Stöckl, a meteorologist from Regensburg, also proposed a similar theory and made similar observations.