India, April 29 -- Pakistan's incarcerated former prime minister Imran Khan was treated at a local hospital for his right eye ailment and then shifted back to prison on Tuesday.

Khan, 74, was diagnosed with right central retinal vein occlusion (CRVO) in late January and brought to the Pakistan Institute of Medical Sciences (Pims), where he was given an anti-VEGF injection, a treatment being repeated every month.

He was last treated on March 23. According to the Pims spokesperson, Khan was brought to the hospital on April 28 for follow-up eye treatment, during which he received a fourth intravitreal injection.

Khan was shifted back to prison after the procedure. 

"Prior to the procedure, he was examined by the ophthalmologists and...