most tests keep going and get harder until you miss three rounds in a row — that's the point, it's meant to find your limit, not stay fully readable.
hold your laptop at arm's length, roughly 50–70cm away
sit somewhere well lit, and avoid glare on the screen
keep your glasses or contacts on if you normally wear them
set your screen brightness to normal or full
use "i don't know" to move straight to the next test — it's not a guess, it just means you're unsure
you can skip any test if you'd rather not do it
one test uses your camera for a guided self check — you'll be asked for permission at that point
this is a screening tool, not a diagnosis. see an eye doctor for a real exam.
saved results
your saved history
saved entry
eye stats
average eye readout
test 1 / 7 — visual acuity
pick the letter shown below. it keeps shrinking round after round.
which letter is this?
test 2 / 7 — color perception
one circle is a slightly different shade. click on it. the difference keeps shrinking round after round.
test 3 / 7 — contrast sensitivity
pick the letter shown below. it keeps fading round after round.
which letter is this?
test 4 / 7 — near vision
pick the word shown below. it keeps shrinking round after round.
which word is this?
test 5 / 7 — peripheral awareness
stare at the center dot without moving your eyes. a letter will flash off to the side — pick which one it was. the flash gets quicker each round, for 5 rounds.
focus on the dot, then click start round
test 6 / 7 — astigmatism screen
look at the center of the pattern below. do all the lines look equally dark and equally sharp?
test 7 / 7 — grid distortion
look at the dot in the middle of the grid. do all the lines look straight and evenly spaced?
results7 / 7
your results
visual acuity
20/20
overall score
0/100
a rough self-screening, not a diagnosis. see an eye doctor for a real exam.
save this session
saved locally in this browser only — nothing is uploaded.
saved.
eye color
computer-vision analysisoptional
facial landmark eye snapshot
this runs a real model — mediapipe's face landmarker — in your browser to find 478 points on your face, including your iris outlines, then takes a still snapshot and measures both eyes against each other for size, position, symmetry, and estimated eye color.
it's genuine computer vision, not a guess — but it's a single snapshot, unvalidated thresholds, and easily thrown off by lighting, angle, or hair. treat any flag here as a reason to get a real exam, not as a result on its own.
hold the camera at eye level, roughly arm's length away
face a light source — avoid strong backlight or shadows across your face
push hair away from your eyes and remove sunglasses (regular glasses are fine)
use the eye-gap slider below the camera to match the guide circles to your own eye spacing, then line both eyes up inside them and look straight into the camera
once aligned, press "capture snapshot" — it takes one photo and analyzes that photo; if your eyes are closed or no face is found, hit retake to go live again
your camera data stays on this device
the face model and all its math run entirely in your browser. the video frames, the landmark points, and the color samples are never uploaded, streamed, or sent to any server — nothing about your camera leaves this device.
the camera turns off as soon as a snapshot is captured, and none of it is saved once you leave or refresh this page.
this only covers the eye-snapshot feature above — it doesn't change how the rest of the page or your browser works.