Complex sentence: Daljit Singh (11 October 1934--27 December 2017) was an Indian ophthalmologist and the former honorary surgeon to Giani Zail Singh, President of India.
Split into simpler sentences: Daljit Singh (11 October 1934--27 December 2017) was an Indian ophthalmologist. He was formerly an honorary surgeon to Giani Zail Singh, President of India.