Casey Albert Wood (November 21, 1856 – January 26, 1942) was a Canadian ophthalmologist and comparative zoologist who studied aspects of animal vision especially those of birds.

His father was an eminent New York physician who traced his descent from Epenetus Wood who emigrated from Berkshire in 1717.

[1] Wood served as a clinical clerk under William Osler at the Montreal General Hospital while a medical student, beginning a life-long friendship which included their shared interest in book collecting.

[2][3] Wood worked as a professor of ophthalmology at the Chicago Post-Graduate Medical School and the Northwestern University.

[1] After the war, Wood studied the eyes of birds and reptiles in British Guyana and travelled later across the world including Kashmir and Sri Lanka.

[6] He then lived in the Vatican where he studied foreign language works on ophthalmology producing a translation of Benvenutus Grassus on the eye.