Is a PD of 28.5 Normal? Learn More About Pupillary Distance

Pupillary Distance (PD) serves as a crucial measurement in determining the optimal lens placement for glasses, ensuring a clear and comfortable visual experience. It refers to the distance between the centers of our pupils, and accuracy in it’s measurement is of utmost importance. For adults, the average PD falls within the range of 54-74 mm, allowing for variations based on individual characteristics. In the case of children, PD tends to range between 43-58 mm, indicating the smaller proportions of their developing eyes.

Can My PD Be 33?

When it comes to measuring your pupillary distance (PD), it’s typically expressed as a single value, such as 66mm. However, it isn’t uncommon to see it written as 33/33 if you’ve symmetrical distance between your pupils or as 34/32 if one eye is slightly further away from the center of your nose than the other.

These variations in PD are quite common and don’t necessarily indicate any issue with your vision. In fact, the average PD for women is around 62mm, while for men it’s around 64mm. These values can give you a general idea of where your PD might fall.

It’s important to keep in mind that PD measurements can vary from person to person and are influenced by factors such as facial structure and individual facial symmetry. Therefore, even if your PD may deviate slightly from the average, it doesn’t necessarily mean there’s a problem.

When it comes to ordering eyeglasses or contact lenses, it’s crucial to have an accurate PD measurement. This helps ensure that the optical centers of the lenses align properly with your pupils, providing optimal vision correction. An incorrect PD measurement could result in eyewear that isn’t well-suited to your individual needs and may cause visual discomfort or strain.

In most cases, your optometrist or eyecare professional will measure your PD during an eye examination. They’ll take precise measurements using specialized tools or techniques. This ensures that your eyewear is customized to your unique facial characteristics and provides you with the best possible visual clarity.

They can provide guidance specific to your individual situation and help address any questions or issues you may have.

How Is Pupillary Distance Measured?

Pupillary distance is the measurement between the center of your pupils. It’s important in order to ensure proper alignment of prescription eyeglasses or contact lenses. To measure pupillary distance, an optician or eye care professional typically uses a pupillometer, a handheld device that measures the distance accurately. Alternatively, you can measure it yourself using a ruler and a mirror. By placing the ruler against your forehead, aligning it with your nose’s bridge, and measuring the distance between the centers of your pupils, you can determine your pupillary distance.

The pupillary distance (PD) is an essential measurement in eyewear to ensure proper lens alignment with your eyes. The average PD for an adult typically falls within a range of 54-74 mm, while children typically have a slightly smaller range of 43-58 mm. It’s important to note that a dual PD measurement consists of two numbers and represents the distance between each pupil center to the center of the bridge of your nose, measured in millimeters.

What Is a Normal PD for Glasses?

When it comes to selecting the perfect pair of glasses, understanding the normal PD (pupillary distance) is crucial. PD refers to the distance between the centers of your pupils, measured in millimeters. It’s an important measurement used to ensure the proper alignment of the lenses with your eyes.

For adults, the normal PD range typically falls between 54-74 mm. However, it’s important to note that everyones PD may vary slightly. This range takes into account the average measurements taken from a large sample size of adults. Therefore, it’s essential to have your PD measured accurately by a professional optician for the best results.

On the other hand, children have smaller PD measurements. As childrens faces are still developing, their PD may change over time. Therefore, it’s crucial to have their PD measured regularly, especially when purchasing new glasses.

When you receive your prescription, the PD measurement may be presented as a dual PD. This means that two numbers are provided, representing the measurement of each pupil center to the center of the bridge of your nose in millimeters.

Overall, understanding the normal PD range for both adults and children is vital when selecting eyeglasses. Proper alignment of the lenses can improve comfort, visual acuity, and reduce eyestrain.


In conclusion, a pupillary distance (PD) of 28.5 isn’t within the normal range for an adult. So, if your PD is significantly lower than the average range, it’s advisable to consult an eye care professional for further evaluation and assistance.