Complex sentence: David J Apple, MD (September 14,1941--August 18,2011) was a pioneer in the fields of ophthalmological research and ophthalmic pathology; medical historian and biographer of Sir Harold Ridley, the inventor of the Intraocular lens (IOL).
Split into simpler sentences: David J Apple, MD (September 14,1941--August 18,2011) was a pioneer in the fields of ophthalmological research and ophthalmic pathology. He was a medical historian and biographer of Sir Harold Ridley, the inventor of the intraocular lens (IOL).