Pierre Felix Lagrange
- Category : 1857-births
- Type : GP
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX Unexpected 4
French ophthalmologist who specialised in the study and treatment of ophthalmic disorders, including eye tumours, strabismus, refraction anomalies and glaucoma. He is remembered for introducing a surgical technique that was a combination of an iridectomy and sclerectomy for treatment of glaucoma. This surgery was later referred to as a "sclerectoiridectomy" or "Lagrange's operation".
With Emile Valude (1857–1930), Lagrange was co-publisher of the Encyclopédie française d'ophtalmologie (1903–1910).
He died on 22 April 1928, aged 71, in Paris.