Binocular vision · prisms
When two eyes must become one image
Binocular vision problems are our speciality. Our expertise is among the foremost in the world, and our patients come from all over Norway.
Try it
How a small deviation can feel
The illustration shows the principle: the eyes send two images that don't quite line up. The brain works to merge them – causing fatigue and headaches. A prism lens bends the light so the images align.
The method
MKH and Zeiss Polatest
Polatest
The most thorough examination of binocular quality. Distinguishes between motor and sensory conditions.
Prism glasses
Lenses thicker on one side that bend light. They relieve the eye muscles – as long as they are worn.
Follow-up
Compensation is often built up over many years. Adjusting prisms over time is normal.
The way Alf Opheim Optikk works has at times been debated. None of the complaints against us succeeded, and a larger scientific study at NTNU has since shown a sound professional basis for the method. For us, it is the patients who count.
Does this sound familiar?
Signs of strained binocular vision
Tick what you recognise in your child – or in yourself.
This is not a diagnosis – just a help to know when to get in touch.
Questions and answers
What people ask
What is binocular vision?
Binocular vision is how well the right and left eye work together and merge their images into one. A small misalignment can cause headaches, fatigue and reading difficulties even when visual acuity is good.
How do you examine binocular vision?
We use the extended measuring and correction method MKH with Zeiss Polatest. It distinguishes between motor and sensory conditions and maps binocular vision very precisely.
What are prism glasses?
Lenses that bend light so the images land in the right place in the eyes, so the eye muscles don't have to work hard to align. Prisms don't cure the misalignment, but correct it as long as they are worn.
Does the school/health-centre test catch everything?
No. The four-year check tests each eye separately. Many children see well but their eyes are still not comfortable. We recommend ruling out vision problems with an optician first.
What if you find signs of eye disease?
Then it is our duty to refer you directly to an ophthalmologist. We work with GPs, ophthalmologists and orthoptists.
Opening hours
Opening hours- Monday–Friday
- 09:00–16:30
- Saturday
- 10:00–14:00
- Sunday
- Closed
- Summer closure 2026: only 25 and 27 July.
- Christmas: 23 Dec 10–14 · 24–26 Dec closed · 27–30 Dec 10–14 · 31 Dec and 1 Jan closed.
- Easter: Mon–Tue 9–16:30 · Wed 9–14 · Easter Saturday closed.
Answered 9–12 and 13–16 · post@opheim.no
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