Titmus

Titmus is a surname and may refer to other uses in different contexts. Notable people with the surname include Ariarne Titmus (born 2000), an Australian competitive swimmer who has won Olympic gold medals and multiple world championships.

Titmus Optical is a manufacturer of vision testing equipment. Its products are widely used by optometrists and ophthalmologists, and include devices such as the Titmus Visual Tester and the Titmus Fly stereo test. These tools are employed to assess visual acuity, depth perception, and binocular vision.

The Titmus test, often referred to as the Titmus Fly test when the fly figure is used, is a practical clinical instrument for evaluating stereo vision. It presents images with depth cues and requires the examinee to identify or discern depth, providing a measure of stereopsis across several levels of difficulty. The test is commonly found in vision screenings, clinics, and educational settings as a quick reference for depth perception abilities.