[Survey of ocular injury by solar eclipse 2009]

Incidence of ocular injury caused by the solar eclipse of 2009 has been investigated using the questionnaire of the Japan Committee of the International Year of Astronomy 2009.

The questionnaire was available to the public on the website.

Answers were obtained from 14 people (12 men, 2 women), aged from sixteen to fifty-four. All had looked at the sun either with the naked eye or through some shading device (plastic sheet, plastic bag, compact disc, etc.) the safty of which is unknown. Reported symptoms included a sense of incongruity, heat, pain, central scotoma or visual disturbance, classified into four periods of duration. Three people with transient symptoms watched the eclipse with the naked eye for one minute in cloudy weather. Three people with symptoms lasting for one day and three people with symptoms lasting for one week had watched it with the naked eye and some shading device for 10 minutes in cloudy weather. Five people with symptoms lasting for more than one week watched the eclipse with the naked eye and through some sort of device in fine or slightly cloudy weather. Three people consulted their ophthalmologist.

Those who reported adverse symptoms did not comply with the instructions for safe watching of the eclipse and the duration of the symptoms depended on the weather and the type of device used.