Why is my vision worse at night? Causes and when to seek advice
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Worsening vision at dusk or when driving at night is a very common reason for consultations among our patients at Clínica Castellote. Difficulty seeing in low light can have many causes, some mild and others requiring medical assessment. Identifying the cause is essential for timely treatment.
What is poor night vision?
Night vision depends mainly on retinal cells called rods, which capture light in dim conditions. When these cells or the visual system do not function properly, difficulties adapting to darkness, glare or loss of contrast may occur.
The most common causes of poorer night vision
- Inadequately corrected refractive problems
Myopia, astigmatism or an unsuitable prescription can become more noticeable in low light, causing blurred vision and eye strain at night. - Early cataracts
Cataracts do not only affect daytime vision. In their early stages, they can cause glare, halos around lights and greater difficulty seeing at night, especially when driving. - Dry eye syndrome
Dry eye alters tear quality and worsens vision, particularly in low light or with bright light sources such as car headlights. - Vitamin A deficiency
Vitamin A is essential for rods to function correctly. Although uncommon, a deficiency can cause problems adapting to darkness. - Retinal diseases
Conditions such as retinitis pigmentosa or other retinal disorders can progressively affect night vision and require specialist monitoring.
Warning symptoms you should not ignore
It is important to consult an ophthalmologist if you notice:
- Increasing difficulty seeing at night
- Intense glare or halos around lights
- Problems driving at night
- Sudden changes in vision
- Loss of contrast or persistent blurred vision
If night vision worsens or interferes with your daily life, a comprehensive eye examination is recommended. At Clínica Castellote we carry out specific tests to identify the cause and offer the most appropriate treatment in each case.
Conclusion
Poorer night vision should not be accepted as normal, particularly if it develops progressively or affects activities such as driving. Early diagnosis allows the cause to be treated and future complications avoided.
If you find it difficult to see at dusk, book an appointment at Clínica Castellote, your trusted clinic for ophthalmology in Castellón, and care for your vision with professional help.