Comfortable near point
The target stayed single until close to the nose and you reported few or no near-work symptoms.
A moment for your vision
Convergence test
Notice how comfortably your eyes work together at close range.
- About 3 min
- No sign-up
For screening only. This does not replace a professional eye exam.
Prepare a target
Have a pen or pencil nearby.
Keep both eyes open
Move the real target toward your nose.
Mark the first change
Stop if it doubles, blurs or feels uncomfortable.
A simple guide
How to take the convergence test
The goal is to find the point where one clear target first becomes double, blurry, or uncomfortable while both eyes are open.
- 1
Pick a small target
Use a pen tip, pencil tip, or small letter that is easy to focus on.
- 2
Keep both eyes open
Look directly at the target and keep it single as long as you comfortably can.
- 3
Move it toward your nose
Move slowly and stop when it doubles, blurs, drifts, or feels hard to hold.
- 4
Record symptoms
Add any reading, screen, headache, blur, or double-vision symptoms you notice.
Best setup: Use your usual reading or computer glasses if you normally wear them for near work. Keep both eyes open; this test checks teamwork, not each eye separately.
What this test may show
Convergence is the ability of both eyes to turn inward together when you look at something close. If the eyes do not team comfortably, reading and screen work can feel harder than they should.
A home near-point screen can notice a pattern, but it cannot measure eye alignment precisely or diagnose convergence insufficiency. A professional exam can test eye teaming, focusing, prescription, and eye health together.
Borderline or inconsistent
Fatigue, screen setup, and lighting can affect this check. Retesting later can help confirm the pattern.
Possible eye teaming strain
A far break point or frequent near-work symptoms can be worth discussing with an eye care professional.
When to get professional advice
Arrange an eye exam if near work often causes double vision, headaches, eye strain, blurred words, losing your place while reading, or needing to close one eye.
Seek prompt care for sudden double vision, new eye pain, sudden vision loss, or neurological symptoms.
Frequently asked questions
Practical answers about near point of convergence and eye teaming.
What is a convergence test?
A convergence test checks how well both eyes turn inward together when you look at something close. The near point of convergence is the closest point where you can keep one clear target before it becomes double or difficult to hold.
Can this diagnose convergence insufficiency?
No. This online screen can notice a pattern, but diagnosis requires an eye care professional to measure eye alignment, focusing, prescription, and eye health in a controlled exam.
What symptoms can eye teaming problems cause?
Near-work symptoms can include eye strain, headaches, double vision, blurred words, losing your place while reading, poor concentration, or needing to close one eye.
Should I wear glasses during the test?
Use the glasses or contact lenses you normally wear for reading, computer work, or studying. If you want to compare with and without glasses, repeat the test under the same conditions.
What if the target is double right away?
Stop the test and choose the option that says you could not keep it single. If this is new, frequent, or uncomfortable, arrange a professional eye exam.
When is double vision urgent?
Sudden double vision, double vision with headache or neurological symptoms, new eye pain, or sudden vision loss needs prompt medical care.
Medical references
The safety language and screening framing on this page are based on patient guidance from ophthalmology and pediatric eye care organizations.