© Copyright 2026 American Medical Association. All rights reserved.
The CPT® Code 99172 refers to a comprehensive visual function screening test that employs automated or semi-automated methods to quantitatively assess various aspects of visual performance. This screening encompasses the bilateral determination of visual acuity, which measures the clarity or sharpness of vision, as well as ocular alignment, which evaluates the positioning of the eyes. Additionally, the test includes an assessment of color vision using pseudoisochromatic plates, a method designed to identify color deficiencies. The field of vision is also examined to determine the extent of peripheral vision. Furthermore, the screening may incorporate evaluations for contrast sensitivity, which assesses the ability to discern objects against varying backgrounds, and vision under glare conditions, which tests how well a person can see in bright light scenarios. This type of vision screening is particularly important for individuals in occupations that necessitate specific visual capabilities for safety and performance. The screening process is tailored to meet the specific vision requirements outlined in the screening request, ensuring that the evaluation is relevant and comprehensive. Various techniques, such as the use of a Snellen chart for visual acuity and pseudoisochromatic plates for color vision, are employed to provide accurate and reliable results. The outcomes of the screening are interpreted by a qualified physician or technician, who then compiles a written report detailing the findings for further review and action if necessary.
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