John Cogan did his medical training in Manchester and then specialised in ophthalmology, doing his training in the United Liverpool Hospitals and the North Staffordshire Royal Infirmary, Stoke on Trent. He was a consultant ophthalmic surgeon at Chester Royal Infirmary and the Wrexham Hospital Group,

Thomas Gerrard O'Driscoll was a consultant ophthalmic surgeon at the regional eye unit, Oldchurch Hospital, Romford. He was born in Kinsale, County Cork, Ireland, on 5 December 1924, the second son of Patrick O'Driscoll, a civil servant in the Customs and Excise, and Mary O'Driscoll née O'Carroll. H

Dhulipala Kameswara Rao was born in Andhra Pradesh, South India, on 18 August 1905, the son of a lawyer. He was educated locally until he entered the Madras Medical College, from which he graduated MB BS in 1930. He was a junior house officer at the Government General Hospital and at the Government