Buying your first pair of glasses: a step-by-step guide

Nobody explains the process before you walk in, so first-timers usually spend the visit trying to work out what is happening. Here is the whole thing in order, with what to ask at each step.

1. Start with the eye test, not the frames

Your prescription determines what lenses you need, and your lenses influence which frames will work. Picking a frame first and finding out later that it cannot take your prescription comfortably is the most common way a first purchase goes wrong. Book the test first.

2. Bring the right things

Any previous prescription, your medication list, and an idea of what you actually need the glasses for. Screens all day is a different brief from driving at night, and both are different from reading. Say so — the recommendation changes.

3. Understand your prescription before you shop

Ask what the numbers mean. Specifically: whether you have astigmatism, and how strong the correction is. Both affect lens thickness and how a lens behaves at its edges, and both should shape the frame you choose.

4. Choose a frame that fits before one that flatters

Fit first, style second. Three things decide fit:

• Width. The frame should sit level with the sides of your face, not squeeze it or overhang it
• Bridge. This carries the weight. A bridge that is too wide slides down; too narrow and it pinches. Adjustable nose pads give you room to correct this later
• Temple length. The arms should reach your ears and curve down behind them without pressing

Your pupils should sit near the horizontal centre of each lens, and reasonably close to the middle horizontally. That is not a style preference — it is where the lens works best.

5. Let the prescription narrow the frame list

If your prescription is strong, a smaller, rounder frame keeps lenses thinner, because thickness increases towards the edge and a smaller lens has less distance to travel. Very large or very deep frames are harder work for strong prescriptions. Rimless and half-rim frames also limit which lens materials can be used. Ask before you fall in love with one.

6. Ask about lens material honestly

Tell the team your prescription, your daily conditions and your budget, and let them match a lens to it. Thinner materials cost more and are worth it above a certain strength — below it, they are not. A good store will tell you when you do not need the upgrade.

7. Check the measurements are being taken, not assumed

Your pupillary distance and the height of your pupils in the chosen frame should be measured while you are wearing that frame. These numbers are what put the optical centre of the lens in front of your pupil. Get them wrong and the glasses will feel off no matter how good the prescription is.

8. Try them on properly when you collect

At collection: look across the room, look at your phone, and walk a few steps. Tell the team exactly what you notice. A first pair often needs a small bend at the temple or nose pad, and that takes two minutes at the counter.

9. Expect a few days of adjustment

Mild adaptation — floors seeming slightly off, edges feeling odd — is normal for a first pair and usually settles within a week or two of full-time wear. Headaches that get worse each day, or distortion that is not improving after two weeks, are not normal. Go back.

What first-time buyers usually get wrong

• Buying a frame that is too big because it looks good in the mirror while standing still
• Wearing the glasses only sometimes, which stretches adaptation out for weeks
• Cleaning with a shirt — the fastest way to scratch a brand new lens
• Skipping the case
• Not going back for a free adjustment when something feels slightly wrong

Book a Vision7 eye test at your nearest Vision Express store

Our seven-step comprehensive eye exam gives you the accurate starting point everything else depends on — the subjective refraction fine-tunes the prescription with you in the chair, which matters most for a first pair, when you have no previous glasses to compare against.

Ask for Opulens Advanced 1.60 at the counter. For a first pair it is the sensible choice: a lighter, thinner material than a basic lens, built for screen hours, and in stock — so you walk out wearing them in about 20 minutes rather than waiting a week to find out how they feel.

If your prescription is on the stronger side, ask about Tokai BIR-W, which keeps a strong correction noticeably thinner at the edges.

Every pair comes with free lifetime ultrasonic cleaning, free lifetime custom fitting and adjustment, and a 1-year warranty — so the adjustments you will want in your first month cost you nothing.