Tourne Pupillary Response

Tournai pupillary response (also known as Tournai phenomenon) is a reflexive constriction of the pupil in response to light in the eye. This phenomenon is named after the French ophthalmologist Alfred Tournai (1878-1969), who first described this reaction.

In this test, the doctor shines a bright light into one of the patient's eyes and observes the reaction of the pupils in both eyes. In a healthy person, the pupil of the illuminated eye reflexively narrows, and the pupil of the unlit eye also narrows slightly. This occurs due to cross nerve connections between the eyes.

The absence or weakening of the pupillary Tournai reaction may indicate damage to the optic nerve or disorders in the brain stem. Therefore, this test is widely used by neurologists and ophthalmologists to diagnose various diseases of the central nervous system and visual organs.

Tournais pupillary response is a medical term that describes the process of changing the size of the pupil of the eye in response to external stimuli. This phenomenon was discovered by the French ophthalmologist Henri Louis Emile Terny in the 19th century and received his name. Terni devoted thirteen years to the study of pupillary tours, work on which was published in the journals "La Revue medico-chirurgicale" (