Guide to Buying Prescription Eyewear

First, make sure your eyeglasses prescription is up to date.

Whether or whether you ask for it, the optometrist must provide you with a copy of the prescription after your eye exam.

A few of the acronyms and words on your prescription that you'll need to know while shopping for glasses online are as follows:

The right eye is called the "Oculus Dexter," or OD.

The left eye is called the Oculus Sinister (OS).

The amount of lens power, measured in spheres (SPH), required to correct nearsightedness (-) or farsightedness (+) is indicated by the prescription.

To address presbyopia, the bottom portion of multifocal lenses is sometimes equipped with additional magnification power (abbreviated ADD for bifocals).

An astigmatic lens's power is denoted in cylinders (CYL).

The axis defines the location of the cylinder power on your lenses (required for astigmatism).

It's important to have your squinty-eyed pupils measured.

The PD or interpupillary distance is the space that separates your eyes' pupils.

The sweet spot for clear vision is just in the optical center of the lenses. Put this section of the glasses right in front of your eyes, where it will focus light on your pupils.

The eyeglasses lab will require your PD to properly place the lenses on your eyewear.

The average size of the space between your pupils is 54–68 millimeters.

Self-assessment of PD is fraught with difficulty. A professional optician is the best person to take the measurement.

While optometrists will make note of this number during your eye exam, they are not required to include it in your prescription. This allows customers to make purchases online. If they haven't done, you should ask the pharmacist to record this number next to your prescription.

CHOOSE Appropriate Displays

Knowing your frame size is the single most important factor in ensuring a successful online buy of affordable prescription eyeglasses online. Your choice of eyewear frames should take into account these three considerations.

a. Pick Eyeglasses That Work With Your Facial Structure

You may improve your appearance and draw more positive attention to your eyes by choosing frames that match your face. Picking up eyeglasses with a frame shape that contrasts with your face shape will help you achieve a well-rounded look.

There are a few basic face types that may be used to describe every given human face.

Those with a heart or diamond face shape have prominent cheekbones, a wide forehead, and a small chin. Seek a pair of specs that have a comparable shape. Frames with a broader top than the bottom and a rounder form will contrast well.

A round face and a rounded forehead define a round person. Optimal picture frames have more width than height. Rectangular eyewear provides structure and lengthens the face.

When it comes to your face and jaw, if you have a square shape, you should round it out a little. Eyewear with softer, rounder frames will help soften the sharp angles of your face.

The desirable oval face shape looks well in a wide variety of eyewear. A pair of glasses that are both symmetrical and have a circular base is your best bet.