Online Tool for Pupillary Distance

Pupillary distance (PD) refers to the distance between the center of your pupils. It is a crucial measurement when it comes to eyeglasses, as it determines where the optical center of the lenses should be placed.

If the PD is incorrect, it can lead to eyestrain, headaches, and even distorted vision. When it comes to PD Measurement, accuracy is crucial for any eyewear purchase, instore or online.

The Fittingbox Online PD Measurement Solution measures the distance between the pupils of the user with a proven accuracy of 1 mm for 7 out of 10 measurements. The accuracy is within 2mm of the actual measure in 96% of cases.

The average pupillary distance for men is 64 mm and 62 mm for women. However, it is important to note that individual PD can vary widely. The only and most accurate way to determine your pupillary distance is to use a PD measurement tool.

Unlike in-store shopping, you do not have the opportunity to try on different frames and make adjustments on the spot when shopping for eyeglasses online. Here are some benefits of accurate PD measurement for online glasses shopping:

• Proper fit for visual clarity: When your lenses are aligned with your pupils, you are looking through the most optimal part of the lenses for clear vision. Accurate PD measurement ensures that you are receiving the correct prescription and experiencing optimal visual clarity.
• Convenience: Ordering eyeglasses online offers convenience and saves time. Thus, you can confidently order your glasses from the comfort of your own home without the need for in-person adjustments.
• Cost savings: Ordering glasses online often comes with cost savings compared to traditional brick-and-mortar stores. With an accurate PD, you can avoid the need for costly adjustments or returns due to ill-fitting glasses.

 Learn more

At home

Measuring your PD at home is easier than you might think. While it is always recommended to have your PD measured by a professional, especially if you have complex vision needs, there are several methods you can use to measure your PD at home:

• A ruler
• An app on your phone
• An integrated solution on the website you're buying glasses.

Using a ruler

If you a like hands-on approach, you can use a millimeter ruler to measure your PD.

With the ruler in hand, stand in front of a mirror and close one eye. Align the ruler's zero mark with the center of your open eye's pupil. Then, using the ruler, measure the distance from the center of your open eye's pupil to the center of your closed eye's pupil. Repeat this process a few times to ensure accuracy and record the measurements.

Incorrect alignment or inconsistent measurements are common mistakes when using a ruler.

Via a mobile app

The easiest and most convenient method is the phone method. There are various phone-based solutions available that use the device's camera to measure your PD.

You can then follow the on-screen instructions, and allow the app to capture your PD measurement. It is important to follow the app's instructions closely and ensure that you are holding your device at the correct distance from your face for accurate results.

Driving the user out of your website and forcing them to download an app on their phone before completing their order is bothersome.

Keeping them on your website where privacy policy is implemented brings them the reassurance that their prescription data remains private.

Common mistakes to avoid

While measuring your PD at home is relatively simple, there are some common mistakes that you should avoid to ensure accurate results:

• Incorrect alignment: When using a ruler, it's important to align the ruler properly with the center of your pupil. Ensure that the zero mark is aligned correctly, and that the ruler is held straight to avoid skewing the measurement.
• Inconsistent measurements: Take multiple measurements and calculate the average for the most precise result.
• Improper lighting: Adequate lighting is essential when measuring your PD. Insufficient lighting can lead to inaccuracies in the measurement. Ensure that the area is well-lit.
• Incorrect device positioning: If you are using a phone to measure your PD, ensure that you are positioning the device at the correct distance from your face. Follow the solution's instructions closely to ensure accurate results.

 Online (via an integrated solution on a website)

Fittingbox's PD Measurement is an online tool that guarantees an accurate PD result. It guides the user through a step-by-step protocol to ensure exact calculations. It only requires users to grab a card to start the measurement process.