Binocular vision series / 04 of 06

How we test, and how it’s treated

A binocular vision assessment measures how the eyes aim, focus and hold together. Treatment starts with the simplest option that works.

  1. 01Hidden drift or visible turn?
  2. 02Focusing and aiming, working as a team
  3. 03Signs the eyes are working too hard
  4. 04How we test, and how it’s treated
  5. 05Duane syndrome
  6. 06Sudden double vision

What we measure

Part 04 · 01
01

Cover test

At distance and near. Reveals phorias and tropias, their size and direction.

02

Near point of convergence

How close the eyes can turn in before one drifts out.

03

Fusional vergence ranges

How much reserve is available to hold a phoria straight.

04

Accommodative amplitude and facility

How strongly and how quickly the eyes refocus.

05

AC/A ratio

How much turning in each unit of focusing effort drives.

06

Cycloplegic refraction

Eye drops relax focusing to uncover hidden long-sightedness.

Simplest options first

Part 04 · 02
01

Glasses first

Correct the prescription, including plus lenses or bifocals for an inward turn driven by focusing.

02

Vision therapy

Particularly for convergence insufficiency. In-clinic sessions plus home exercises.

03

Prism

Used in selected cases to ease the effort of holding the eyes together.

04

Referral

To an eye specialist for a surgical opinion when a turn is constant or large.

Vision therapy at WA Eye Care

Part 04 · 03

We run vision therapy in the clinic, backed by home exercises between visits. In-clinic sessions train the eyes to aim and focus together under guidance; the home program keeps the practice going between sessions.

We re-measure at each review: near point, vergence ranges, focusing and symptoms. So you can see whether it’s working, not just how it feels.

For optometrists

Notes for referring optometrists

For optometrists
Cycloplegia

Any child with an eso

Or suspected latent hyperopia. Measure the deviation at distance and near, with and without full correction.

Convergence insufficiency

Office-based therapy

Office-based vergence and accommodative therapy with home reinforcement has the strongest evidence. We run both.

What helps us

With the referral

Refraction, cover test findings, NPC and any vergence ranges. We send the patient back to you for their ongoing care.

Refer a patient

Key takeaways

Part 04
  1. 01The assessment measures aiming, focusing and the link between them.
  2. 02Glasses come first; vision therapy is in clinic and at home.
  3. 03Constant or large turns are referred for a surgical opinion.
Binocular vision / Mt Hawthorn

Book a binocular vision assessment

In-clinic vision therapy and home programs, with progress re-measured at every review.

Book

General health information only, not personal advice. Everyone’s eyes are different. An optometrist or doctor should examine you before any treatment is decided.

WA Eye Care · Room 3, 103 Scarborough Beach Road, Mt Hawthorn WA 601608 6288 4218 · info@waeyecare.com.au