Education
Critchett studied at the London Hospital.
Critchett studied at the London Hospital.
He became an Member Royal College of Surgeons in 1839 and a Fellow of the Royal College of Surgeons. in 1844. He was a demonstrator of anatomy at and, from 1861-1863, a surgeon to the London Hospital.
Critchett became a member of the council of the College of Surgeons in 1870 and served as an ophthalmic surgeon and lecturer at Middlesex Hospital from 1876-1882.