Disclaimer
Last updated: August 4, 2026
1. What AcuityMaster is
AcuityMaster is a chart display system. It presents optotypes — letters, numbers, symbols and test targets — on a standard computer display at sizes calculated from the testing distance the clinician enters. It is a presentation tool for use by qualified eye care professionals.
AcuityMaster is not a diagnostic device. It does not measure, interpret, score or diagnose. It produces no clinical findings and makes no recommendations about a patient's care.
2. Regulatory status
AcuityMaster is not a medical device. It has not been cleared or approved by the U.S. Food and Drug Administration, carries no 510(k) clearance, and is not CE marked. We make no claim of regulatory clearance of any kind, in any jurisdiction.
It is a chart display tool for use by qualified clinicians who remain responsible for every clinical decision. If your setting requires software with a specific regulatory status, AcuityMaster does not meet that requirement and you should not rely on it as though it did.
3. Clinical responsibility remains with the provider
All clinical judgement, interpretation of results, and decisions about diagnosis, treatment and referral rest entirely with the treating clinician. Nothing displayed by AcuityMaster substitutes for professional examination, clinical reasoning, or the standard of care applicable in your jurisdiction.
The clinician is responsible for selecting appropriate test types for each patient, for verifying that the configured testing distance matches the actual room, and for confirming that displayed optotype sizes are correct before relying on any measurement taken with them.
4. Standards conformance depends on your hardware
AcuityMaster is designed to the requirements of ANSI Z80.21 and ISO 8596, and calculates optotype dimensions from the testing distance you enter.
Those standards also impose luminance and contrast requirements that are properties of the display, not of the software. AcuityMaster does not supply, measure, calibrate or verify your monitor. Whether a given installation meets the luminance range or contrast requirements of either standard depends on the display you use, its settings, its age and the ambient lighting in the room — none of which AcuityMaster controls or can detect.
We make no representation that any particular installation conforms to ANSI Z80.21, ISO 8596, or any other standard. If conformance matters for your setting, verify it against your own hardware.
5. Color vision testing
Color vision screening plates displayed by AcuityMaster are rendered on your monitor at whatever color reproduction that monitor provides. Display technology, color profile, brightness and ambient light all affect what the patient actually sees. Screening results obtained on an uncontrolled display should be treated as screening only, and confirmed by an appropriate method where the result matters clinically.
6. No patient health information
AcuityMaster is a display system only. It does not store, transmit or record patient health information. Any record of a patient's results is made by the clinician in their own records system, and is governed by that system's policies and by the clinician's own obligations.
7. Warranties disclaimed
AcuityMaster is provided “as is” and “as available”, without warranties of any kind, whether express, implied or statutory. To the fullest extent permitted by law, AcuityMaster, LLC disclaims all implied warranties including merchantability, fitness for a particular purpose, non-infringement, accuracy, and uninterrupted or error-free operation.
We do not warrant that the software will meet your requirements, that it will be available without interruption, or that any defect will be corrected.
8. Limitation of liability
To the fullest extent permitted by law, AcuityMaster, LLC and Mark S. Brown, MD shall not be liable for any indirect, incidental, special, consequential or exemplary damages, or for any loss of profits, revenue, data, or goodwill, arising out of or relating to your use of or inability to use AcuityMaster — whether based in contract, tort, negligence, strict liability or otherwise, and whether or not we were advised of the possibility of such damages.
Where liability cannot be excluded, our total aggregate liability is limited to the amount you paid for AcuityMaster in the twelve months preceding the event giving rise to the claim.
9. Website content
Educational articles on this site are general information for eye care professionals. They are not clinical guidance, do not establish a standard of care, and are not a substitute for current peer-reviewed literature or the guidance of your professional body. See our editorial standards for how this content is produced.
10. Questions
Email Mark@AcuityMaster.com or call (251) 216-2825.
AcuityMaster, LLC · PO Box 851351, Mobile, AL 36685