Born on 22 August 1880 the only son of Henry Edward Juler FRCS, senior ophthalmic surgeon to St Mary's Hospital, and Amy Anderson his wife, he was educated at St Paul's School and Trinity College, Cambridge, where he took first-class honours in the Natural Sciences Tripos part 1 in 1901. He entered St Mary's Hospital medical school with a University scholarship, and in due course was elected to the staff, becoming ultimately consulting ophthalmic surgeon. He received his special training at Moorfields, and afterwards became surgeon to the Central London Ophthalmic Hospital. He was also ophthalmic surgeon to Queen Elizabeth's Hospital for Children, Shadwell, the London Lock Hospital, the Hospital of St Luke for the Clergy, St John's School, Leatherhead, and the Royal Society of Musicians. During the first world war he served under Sir William Lister at Étaples in France as a Captain RAMC, and at the beginning of the second war went to France again (1939-40) as consulting ophthalmologist to the British Army, with the rank of Colonel. In 1936 he had been appointed surgeon-oculist to the household of George VI on the King's accession, a post to which he was re-appointed by the Queen on her accession in 1952. He was created a Companion of the Royal Victorian Order in 1947. Juler took an active part in many professional societies and was a frequent contributor to the specialist journals. He was President of the Ophthalmology section of the Royal Society of Medicine 1942-44, Vice-President of the Faculty of Ophthalmology 1946-47, and President of the Ophthalmological Society 1948-50. He was treasurer of the Royal Medical Benevolent Fund for many years up till 1961. Juler was christened "Franklin" but adopted the briefer form of the name. He married Mabel, daughter of Stanes Chamberlayne of Witherley Hall, Atherstone. He practised at 96 Harley Street, and lived latterly at 36 Harley House, where he died on 7 February 1962 aged 81. He was survived by his wife, their son Dr Humphrey Juler, and their four daughters; his elder daughter married Dr W D W Brooks FRCP, physician to St Mary's. He was a keen golfer, and used to organise the annual St Mary's golf tournament. Publications: Congenital total colour-blindness. *Ophthal Rev* 1910, 29, 65-71. Acute purulent keratitis in exophthalmic goitre, treated by tarsorrhaphy. *Trans Ophthal Soc* 1913, 33, 58-66. Treatment of intraocular foreign bodies at a base hospital in France, with H P Gibb and R Foster Moore. *Brit J Ophthal* 1918, 2, 564-571. Amblyopia from disuse. *Trans Ophthal Soc* 1921, 41, 129-139. A congenital anomaly of the optic nerve, with Ida C Mann. *Trans Ophthal Soc* 1922, 42, 87-101. Retinal haemorrhage in the newborn. *Trans Ophthal Soc* 1926, 46, 42-52. Some cases of damage to Descemet's endothelium. *Trans Ophthal Soc* 1930, 118-127. Hypotony after sclero-corneal trephining. *Trans Ophthal Soc* 1939, 59, 253-263. Heparin in thrombosis of the central retinal vein, with A StG Huggett. *Trans Ophthal Soc* 1942, 62, 123-134. Some points in the operation for acute glaucoma, and some reflections on refraction. (Presidential address.) *Trans Ophthal Soc* 1949, 69, 3-15.