Yes. Trouble seeing at night is a good reason to arrange an eye exam, especially if it is new, keeps happening, or makes driving or walking difficult. It can be linked to a glasses prescription that needs updating, cataracts, or other eye conditions. An exam can help identify the cause. If vision changes suddenly or come with eye pain, seek urgent medical care rather than waiting for a routine appointment.
What does trouble seeing at night feel like?
Night vision problems can affect how clearly you see in dim rooms, on poorly lit streets, or when driving after dark. Some people mainly struggle to adjust when moving from a bright place into darkness. Others notice glare from headlights or find it difficult to recognize objects when there is little light.
The medical term night blindness, also called nyctalopia, describes difficulty seeing at night or in low-light conditions. According to MedlinePlus, this difficulty may become especially noticeable after being in a brightly lit environment.
- Needing more time than usual to adjust to darkness after leaving a well-lit room.
- Finding it difficult to see steps, curbs, or objects in dimly lit areas.
- Having trouble reading road signs or identifying pedestrians at night.
- Seeing halos, starbursts, or bothersome glare around headlights and streetlights.
- Experiencing blurred or dim vision when the lighting is poor.
These experiences can have different explanations. Occasional discomfort in unfamiliar lighting is not necessarily a sign of an eye disease, but repeated or worsening difficulty seeing in the dark is worth discussing with an eye care professional.
What can cause difficulty seeing in the dark?
Several eye conditions and other factors can affect night vision. An eye examination helps determine which possibilities are relevant to your symptoms and whether further testing is needed.
- An outdated glasses prescription: Nearsightedness and other focusing problems can affect how clearly you see distant objects, including road signs and objects in low light.
- Cataracts: A cataract develops when the normally clear lens inside the eye becomes cloudy. This can make vision appear dim or blurred and can increase glare or halos around lights at night. According to Mayo Clinic, difficulty driving at night is one possible symptom of cataracts.
- Retinal conditions: The retina is the light-sensitive tissue at the back of the eye. Some conditions affecting it can interfere with vision in dim light. For example, the National Eye Institute explains that night vision difficulties and loss of side vision are common early symptoms of retinitis pigmentosa, an uncommon group of inherited eye diseases.
- Certain medicines or vitamin A deficiency: Some medicines can contribute to night vision difficulties. Vitamin A deficiency is another possible cause, although it is rare in many settings. A healthcare professional can help assess whether either factor may be relevant.
Age can also provide useful context. Cataracts become more common as people get older, while some inherited retinal conditions may cause night vision difficulties during childhood. Children who regularly struggle to see in dim light should be assessed by an appropriate eye care professional, particularly if the problem affects movement or everyday activities.
When should you book an eye exam for night vision problems?
Arrange an eye examination if difficulty seeing at night persists, begins to interfere with daily activities, or seems to be getting worse. It is also sensible to book an appointment if you notice a new change in your vision, have increasing glare from headlights, or find that your current glasses no longer provide clear vision after dark.
You do not need to wait until night vision problems become severe before seeking an assessment. According to MedlinePlus, a complete eye examination is important when night blindness persists or significantly affects everyday life because some causes can be corrected.
For drivers, the practical concern is whether you can see the road, signs, pedestrians, and hazards reliably. If poor night vision makes driving unsafe, avoid driving after dark until you have received appropriate advice. Consider arranging alternative transport rather than relying on brighter headlights or familiar routes to compensate.
Which vision changes need urgent medical attention?
Sudden changes in vision should not be treated as a routine night vision problem. Seek urgent medical assessment if you develop sudden blurring, flashes of light, new shapes in your vision, a dark shadow across your sight, or eye pain with vision changes. The NHS guidance on vision loss identifies these symptoms as reasons to seek urgent help. Sudden loss of vision or severe eye pain warrants emergency assessment.
What happens during an eye exam for poor night vision?
The examination is tailored to your symptoms, medical history, and initial findings. Your eye care professional may ask when the problem started, whether it affects one or both eyes, how often it occurs, and whether you notice glare, blurred distance vision, or difficulty adjusting to darkness. They may also ask about your current glasses, medicines, previous eye problems, and family history.
Common parts of an assessment may include:
- Visual acuity testing: Reading letters on a chart to assess how clearly you see at different distances.
- Refraction testing: Checking whether glasses or contact lenses could improve focusing.
- Examination of the eye: Using a specialised microscope and light to inspect eye structures, including the lens.
- Retinal examination: Looking at the retina and other structures at the back of the eye.
- Pupil assessment: Checking how your pupils respond to light.
Some people also need additional tests, depending on the findings. According to the National Eye Institute, a dilated eye exam uses special eye drops to widen the pupils so the eye care professional can examine the inside of the eyes and look for signs of eye disease.
If a retinal problem or another specific condition is suspected, further tests may be recommended. These can include visual field testing, which assesses side vision, or electroretinography, which measures the electrical responses of the retina. Not everyone experiencing night vision difficulties needs these additional tests.
What can you do while waiting for an appointment?
Practical steps can help reduce the chance of accidents while you arrange an examination. Keep hallways and stairways well lit, use adequate lighting when moving around unfamiliar places, and take extra care on uneven surfaces. Clean your glasses if you wear them, and use your prescribed lenses as directed.
If you struggle to see clearly enough to drive safely at night, do not drive until your vision has been assessed and you can do so safely. Avoid relying on self-treatment or vitamin supplements to correct the problem without professional advice. Treatment depends on the underlying cause, and an eye exam can help determine whether a change in prescription, treatment for an eye condition, or another approach is appropriate.
Persistent difficulty seeing in the dark deserves attention, even when daytime vision seems normal. Booking an eye exam can help clarify what is affecting your night vision and identify any steps needed to protect your sight and everyday safety.