Blur match (beta)
Match the blur. Get a starting number.
Compare a photo with the real thing to estimate your SPH number.
01 Take a photo
Take a photo of something with clear edges across the room, from where you stand.
On a computer, pick a photo you took from your spot. It works best on a phone.
02 Line it up
Stand in the same spot. Hold the phone at arm's length so the thing in the photo looks the same size as the real thing behind it.
100 percent
Pinch the photo or use the buttons.
03 Match the blur
Look at the real thing without your glasses, then at the photo. Slide until the photo looks as blurry as the real thing.
How far is it?
Your estimate
SPH -2.00 to -2.50
A rough estimate. It can be off by about 0.50 either way.
Use this number
Sets SPH -2.25 on the product page.
An estimate, not an eye exam. If you have a prescription, use its SPH.