Born at 47 Ladbroke Square, Notting Hill, London, on 10 March 1853, the third son and third child of Charles Maynard Frost, FRCS and his wife, wife *née* Adams. He was educated at Kensington Grammar School and entered St George's Hospital in 1872. Here he was a successful student and was prizeman in 1874. He served as house surgeon at the North Staffordshire Infirmary, and then returned to St George's Hospital, where he was house surgeon and demonstrator of anatomy. Having determined to practise as an ophthalmic surgeon he became a clinical assistant at Moorfields and ophthalmic registrar at St George's Hospital. In 1881 he was elected assistant ophthalmic surgeon to the Hospital, his senior being R Brudenell Carter, and was surgeon from 1892 until his retirement in 1906. He was the first ophthalmic surgeon at the Victoria Hospital for Children in Tite Street, Chelsea, and held office from 1887 until 1890, when he was succeeded by T Holmes Spicer. He won the Middlemore prize of the British Medical Association in 1882 and again in 1886, was honorary librarian of the Ophthalmological Society, and was lecturer on ophthalmic surgery at St George's Hospital. His health failed in 1906, he suffered from glaucoma and retired to Forest Row, Sussex. On the occasion of his retirement he was made consulting ophthalmic surgeon to St George's Hospital and to the Royal Westminster Ophthalmic Hospital, where he had for some years acted as surgeon. He married Minnie D Anderson on 8 January 1881, who survived him but without children. Mrs Frost's sister, Amy, married H E Juler, FRCS in 1879. Frost died 25 October 1935 at 5 Lansdowne Crescent, London, W. He left, subject to his wife's life interest, £200 each to Epsom College and the Royal Medical Benevolent Fund, £100 each to the Hostel of St Luke, the Invalid Children's Aid Association, and the Royal National Life-boat Institution, and the ultimate residue as to two-thirds to St George's Hospital, and one-third to the Royal Westminster Ophthalmic Hospital. Publications:- *The Fundus Oculi, with an ophthalmoscopic Atlas illustrating the physiological and pathological conditions*. Edinburgh, 1896. The atlas is a magnificent piece of work, in the production of which he had the assistance of A W Head. *An artificial Eye, with some practical suggestions as to its use.* London, no date. *An enlarged model of an eye, upon which students could practise the use of the ophthalmoscope*. *Ophthalmic Surgery*, with R Brudenell Carter, FRCS London, 1887; Philadelphia, 1888. *The Jenner centenary, an inaugural address at St George's Hospital*. London, 1896.