Symptom

Difficulty seeing at night (night blindness)

Get checked if it is worsening

Medical reviewer Mr Mohamed Mohyudin· Last recorded site review

About this review

This page inherits the site’s previous review record. A separate, current article sign-off has not yet been recorded.

How review works · Official biography & credentials

When to get it checked

  • Night vision that is steadily getting worse over months
  • Loss of side vision or tunnel vision as well as poor night vision
  • Night vision problems with diabetes
  • A family history of inherited retinal disease with new symptoms

Common causes

Night vision relies on a clear lens and a healthy retina. These conditions can affect it.

CataractsA cloudy lens cuts night vision and increases glare from headlights.Short-sightednessUncorrected or under-corrected short sight worsens night vision.Retinitis pigmentosaAn inherited retinal condition where night vision is lost early.Diabetic retinopathyDiabetic retinal damage can reduce night and overall vision.GlaucomaAdvanced glaucoma reduces side vision and night vision.

What can help

  • Book an eye test, as cataracts and the right glasses are common, treatable causes
  • Take extra care driving at night and keep windscreens and glasses clean
  • Seek assessment if night vision is steadily worsening

Frequently asked questions

What causes difficulty seeing at night?

The most common causes are cataracts and an uncorrected glasses prescription. Progressive night vision loss can occasionally signal a retinal condition and should be checked.

Is poor night vision a sign of something serious?

Often it is a treatable cataract or focusing problem. But steadily worsening night vision, especially with loss of side vision, can signal a retinal condition and needs assessment.

Can night vision be improved?

Yes, when the cause is treatable: updating glasses and cataract surgery often restore night vision. Retinal causes are managed with specialist support.

Your next step

Take this to your appointment

Write down what has changed, when it started, your current medicines and the questions you want answered. Take these to your eye-care appointment.

Patient resourcesFind care where you live →

Sudden loss of sight, severe eye pain or a dark curtain across vision needs immediate assessment. Do not wait to complete a worksheet.

Trusted sources

For general background, these organisations provide eye-health information. This list is further reading, not a record that they reviewed this article.