Screening tool · 2 min
Night Vision Difficulty Test
Identify low-contrast shapes and letters in nighttime-style scenes.
What this test measures
A short, educational reflection on how easily you can identify low-contrast letters in nighttime-style scenes shown on your screen.
Why it matters
Low-light visual performance affects night driving, glare comfort, and how clearly you see in dim environments. It can be influenced by cataracts, dry eye, and contrast sensitivity.
Who may benefit
Drivers who feel uncomfortable at night, people noticing more glare from headlights, or anyone curious about their dim-light vision.
This free online night vision difficulty test is a quick, educational way to see how well you can identify low-contrast letters in nighttime-style scenes. It cannot diagnose night blindness, cataracts, or any eye condition, but it can flag patterns worth raising during a comprehensive eye exam. You may also find our contrast sensitivity test, driver's licence vision test page, and dry eye assessment useful for understanding low-light comfort. If you live in Ontario, Canada, you can also book an online eye health consultation with Dr. Roxanna Gangi.
Disclaimer: This online night vision difficulty test is for educational and informational purposes only. It does not diagnose eye disease, measure your prescription, or replace a comprehensive eye examination. Screen brightness, device quality, lighting, viewing distance and concentration can all affect results. If you experience sudden vision loss, severe eye pain, flashes of light, trauma, or other urgent symptoms, seek immediate medical attention, or book a comprehensive eye exam or professional consultation with Dr. Roxanna Gangi, Optometrist.
How to take this test
- Dim the lights in the room and turn screen brightness to a comfortable medium.
- Hold your device about 40 cm away.
- For each scene, choose the letter you see — contrast gets harder each step.
Take the test
What Affects Night Vision
Difficulty seeing at night may be related to several factors — sometimes alone, sometimes in combination. Most are common and treatable when properly assessed.
Common Contributors
- Cataracts — scatter light and reduce contrast.
- Glare and halos from oncoming headlights.
- Dry eye — unstable tear film increases scatter.
- Outdated or uncorrected prescription.
- Reduced contrast sensitivity with age.
- Retinal conditions affecting low-light cells.
Patients across Toronto, Aurora, Vaughan, Richmond Hill, Thornhill, Newmarket, and York Region, Ontario can book a comprehensive eye exam with Dr. Roxanna Gangi, Optometrist to investigate night driving difficulty, glare, halos, or reduced contrast.
Frequently asked questions
Want an expert opinion from anywhere in Ontario?
Online tools are a great starting point, but a one-on-one review with Dr. Roxanna Gangi, Optometrist can put your results in context and guide your next steps. Anyone living in Ontario, Canada can book a secure online consultancy — no need to travel to the clinic.