Which of the following tests might be administered before a glare test?

A visual acuity test is often administered before a glare test because it establishes the baseline for the patient's vision. This initial assessment measures how well the patient can see at various distances, providing crucial information about their current level of vision without any additional factors influencing the results, such as glare.

By conducting the visual acuity test first, the practitioner can ensure that any changes in visual performance noted during the glare test are not due to pre-existing visual deficits but rather the effects of glare itself. This systematic approach helps in accurately diagnosing any glare-related vision issues and understanding how they impact the patient's overall visual function.

Other tests, while valuable in their own right, do not serve the same purpose as a baseline assessment. The pupil response test evaluates how the pupils react to light, which is not directly related to visual acuity. Optical coherence tomography is an imaging test used for detailed examination of the retina, and the color vision test assesses the ability to distinguish colors, neither of which directly measure the overall clarity of vision or its performance under glare conditions.