Last updated: July 2026
Please read these terms carefully before using Sight Calculator. By accessing or using this site in any way, you confirm that you understand and accept every point listed below in full.
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Not a Medical Device
Sight Calculator is a casual self-screening tool only, and it is never a certified or regulated medical diagnostic instrument of any kind whatsoever.
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No Diagnosis Provided
This site cannot diagnose myopia, hyperopia, astigmatism, or any other eye condition, disease, or vision impairment, no matter how the result appears.
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Estimate Only
Every score shown is a rough approximation based on your responses, and it should never be treated as an accurate or clinically reliable measurement of vision.
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Screen and Distance Variability
Results depend heavily on your device's screen size, resolution, brightness, and how far you were sitting from the display during the screening process.
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Lighting Conditions Matter
Ambient lighting in your room, glare on the screen, and time of day can all noticeably change how clearly letters and words appear during the test.
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Not a Substitute for Professional Care
This tool does not replace a comprehensive eye examination performed by a licensed optometrist, ophthalmologist, or other qualified eye care professional.
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Consult a Professional
If you have any concern about your vision, eye comfort, or eye health, please schedule an appointment with a licensed eye care provider as soon as possible.
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No Liability for Decisions Made
By using this tool, you agree that Sight Calculator and its creators are not liable for any decisions, purchases, or actions you take based on your results.
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No Warranty of Accuracy
We make no guarantee, express or implied, that the results generated by this tool are accurate, complete, current, or suitable for any particular purpose.
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Age Appropriateness
This screening is intended for general informational use by users capable of reading letters or words on screen, and is not tailored for young children.
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Voluntary and Honest Use
Your results are only as meaningful as your honest, self-reported answers during each stage, since no external verification of your responses is possible.
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No Personal Data Sold
Sight Calculator does not sell your personal information to third parties, and any data entered stays local to your device unless stated otherwise.
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Use at Your Own Risk
You use this site entirely at your own risk, and you accept full responsibility for how you interpret or act upon the eyewear suggestions shown here.
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Content May Change
We may update, modify, or remove features, wording, or scoring logic at any time without prior notice, so results may vary between visits or versions.
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Acceptance of Terms
Continued use of this site after any updates to these terms constitutes your ongoing acceptance of the most current version posted on this page.