KATHMANDU: Prime Minister Sushil Koirala on Wednesday underwent cataract surgery for his right eye at Reiyukai Eiko Masunaga Eye Hospital in Banepa. A team led by Dr Sagun Narayan Joshi removed the cataract in the presence of Nepali Congress leader Dr Shashanka Koirala, who is also ophthalmologist.The PM returned home after surgery, said PM’s personal secretary Atul Koirala.