Do your new progressive lenses feel strange?
That's a good sign. It means your brain is learning something new right now. On this page we show you what's happening inside your head, and prove it with four experiments you do yourself. It takes about 5 minutes.
The problem isn't your glasses. And it isn't you. Your brain is just updating its software.
A progressive lens has different lens powers in different places: you look into the distance through the top, at intermediate distances through the middle and close up through the bottom. For decades, your eyes and brain have been used to one way of looking at the world. Now they need to learn a new one: which part of the lens to look through at each distance.
This isn't just getting used to something – it's real learning. Your brain is building new nerve connections, exactly as it does when you learn a new language or learn to ride a bike. That's why, in the first days, things can feel wobbly, the edges blurry and the stairs a bit suspicious. It's normal, and it passes. The next four experiments show what your brain can do.
Your brain edits what you see all the time. Prove it yourself.
Instructions: Below is a black area where a red grid moves and three yellow dots stay still. Scroll so that the area fills your screen. Stare at the green dot in the middle without moving your eyes or head. After about 10–15 seconds the yellow dots start to disappear, even though they are on the screen the whole time.
What happened? The dots never left the screen. Your brain stopped showing them, because a blurry signal that stays still at the edge of your vision was judged unimportant. Exactly the same happens with the edge areas of a progressive lens: after a couple of weeks your brain no longer shows you the blur, even though it's still in the lens.
If the dots didn't disappear, try again in dimmer light and keep your eyes fixed more firmly on the green dot. The effect only works if your eyes really stay still.
You have a hole in your field of vision. Right now. And you've never noticed it.
Every human eye has a blind spot: the point where the optic nerve leaves the eye and there are no light-sensing cells at all. You never notice it, because your brain fills the gap automatically, every single moment.
Find your blind spot
- Cover your left eye with your hand.
- With your right eye, look at the plus sign. Don't look at the dot, but keep it at the edge of your vision.
- Slowly bring your face closer to the screen (to about 20–40 cm away). At some point the yellow dot disappears completely.
Note: where the dot was, you don't see a black hole. Your brain paints in the background colour instead. If your brain can do this every moment without you noticing, learning a new lens is a small job for it.
You're about to see a Banaani yellow that doesn't exist.
When your eyes look at the same colour for a long time, the cells that sense colour get tired and your brain compensates with the opposite colour. Stare at the white dot in the middle of the blue banana for 20 seconds without moving your eyes. Then move your eyes to the black dot in the white box.
The Banaani illusion
What happened? A yellow banana floated on the white surface, although it was never on the screen. Your brain created it by itself. The same adaptation system constantly adjusts colours, brightness and sharpness for you, and it's now at work on your new lenses.
How a progressive lens works
Choose a zone and we'll tell you what it's for. When you know which part of the lens to look through for what, you get used to your glasses much faster.
This system removes the swaying. Watch it calibrate itself.
The "swimming" feeling you get at first with progressive lenses comes from the edges of the lens moving the image slightly differently from what your brain expects. Your brain recalibrates its sense of motion in a few weeks. Here's how fast the same calibration happens on a small scale: stare at the red dot in the middle of the rings for 20 seconds, then immediately look at the text below.
Motion aftereffect
Did you notice? The illusion lasted only a moment, and then the world was normal again. Your brain calibrates in both directions all the time, without you noticing.
How your world changes over the next three weeks
Drag the slider and see what the mechanism you've just proved does for you, day by day. Notice: the lens doesn't change at all. The only thing that changes is you.
Adaptation simulator
A newspaper in your hand
When you look at this text through the lower part of the lens and keep your head still, the text stays sharp. In three weeks you won't even think about it – your eyes will find the right spot automatically.
😵💫 The edges sway and the floor seems to rock. This is the most normal first reaction of all.
The adaptation timeline
- A wobbly, floating feeling is common
- Blurry edges, stairs feel odd
- Possibly a mild headache
- Brain: "What on earth is going on?"
- The swaying clearly decreases
- Your eyes start to find the right spots
- Reading starts to go smoothly
- Brain: "Aha, there's a logic to this!"
- You forget you're wearing glasses (in a good way)
- Head and eye movements become automatic
- You stop noticing the blur at the edges
- Brain: "What new glasses?"
6 tips to get used to your glasses faster
Don't worry. Your brain will handle this.
Take your time and give yourself 3 weeks. Most people get used to their new lenses within the first week, and almost everyone within three weeks.
If you're not starting to get used to them after three weeks, the reason is usually that the lenses aren't aligned with your eyes exactly right. That can be solved too: we can almost always fix the problem by re-aligning the lenses.
Send us an email, tell us what isn't working and attach a selfie taken straight from the front with your glasses on. From the photo we can see how the lenses align with your eyes, and if needed we'll make new lenses with the correct alignment.
Contact us: info@banaanieyewear.fi