Simplify the following text for a Grade 8 native English-speaking person.
Original: Allvar Gullstrand ( 5 June 1862 , â `` 28 July 1930 ) was a Swedish ophthalmologist .
Simplified: Allvar Gullstrand ( June 5 , 1862 - July 28 , 1930 ) was a Swedish opthalmologist ( eye doctor ) .