VISION TEST
Test your visual acuity, contrast, and visual field right from your device.
Not a medical diagnosis.
Frequently Asked Questions
Screening facts & clinical limitations
Online vision screening tools can estimate visual clarity and detect possible refractive errors such as myopia or presbyopia. However, they do not replace a comprehensive eye examination performed by a licensed optometrist or ophthalmologist.
CorrectLens uses screen calibration techniques such as on-screen size matching (for example, aligning a reference object like a credit card) to estimate pixel density. This allows letters to be rendered at approximately correct physical sizes for more reliable screening results.
You can estimate reading strength using a calibrated near-vision test at your normal reading distance (30–40 cm). If you experience persistent blur, headaches, or eye strain, consult an optometrist for a precise prescription.
No. Online screening tools measure visual performance such as clarity, size recognition, and contrast sensitivity. Conditions like glaucoma, cataracts, macular degeneration, or retinal diseases require medical examination and specialized diagnostic equipment.