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If you’ve been getting headaches regularly – especially after screen work, reading, or driving – and paracetamol keeps taking the edge off but never quite fixes it, there’s a decent chance your eyes are involved. Not always, but often enough that an eye examination should be one of the first things you try, not the last.
An Uncorrected or Outdated Prescription
If you need glasses and don’t have them, or your prescription has changed and your current pair isn’t keeping up, your focusing muscles work overtime to compensate. That sustained effort – hour after hour, day after day – produces a dull, aching headache, typically across the forehead or behind the eyes, that tends to build through the day and ease overnight.
Digital Eye Strain
Prolonged screen work causes your focusing muscles to lock into one position and your blink rate to drop by half. The result is a combination of eyestrain, dry eyes, and tension headache. We covered this in detail in our screen time and eyes blog – the fix is usually a prescription check plus practical changes to how you work, not blue light glasses.
Binocular Vision Problems
Your two eyes need to work together precisely. If the muscle balance between them is slightly off – a convergence insufficiency or a slight misalignment – your brain constantly compensates to fuse the two images into one. That compensation effort causes headaches, often with a feeling of tiredness or heaviness around the eyes. This is one of the most under-diagnosed causes of persistent headaches, because it doesn’t affect how clearly you see – just how hard your eyes work to achieve it.
Astigmatism
Uncorrected astigmatism forces the eye to try and focus light that’s landing at two different points. Low levels might cause no symptoms at all, but moderate uncorrected astigmatism can produce a nagging headache, especially after concentrated visual tasks.
The pattern to watch for If your headaches build during visual tasks, ease with rest or sleep, sit across the forehead or behind the eyes, and paracetamol helps but never cures them – your eyes are the first thing worth checking. A 45-minute examination can either confirm it or rule it out. |
Not every headache is an eye problem, and we’ll always be honest about that. Tension headaches driven by posture, stress, or jaw clenching feel similar but have different causes. Migraines with visual aura (zigzag lines, blind spots) are neurological, not optical. And any sudden, severe headache unlike anything you’ve experienced before needs medical attention, not an optician. We’ll assess what we can and point you in the right direction for everything else.
A thorough eye examination at our Glasgow practice includes the specific checks relevant to headaches:
If headaches have been nagging you and nobody’s looked at your eyes yet, that’s the simplest next step. Get in touch or call 0141 427 4040 – we can usually tell you within one appointment whether your eyes are contributing.
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Yes - an uncorrected or outdated prescription forces your focusing muscles to overwork, which produces a dull headache that builds during visual tasks and eases with rest.
Typically across the forehead, behind the eyes, or around the temples. They tend to worsen through the day during concentrated visual work and improve with rest or sleep.
Yes - digital eye strain from sustained screen work is one of the most common causes. It's usually a combination of focusing fatigue, reduced blinking, and sometimes an inaccurate prescription for screen distance.
If headaches are linked to visual tasks, an eye examination is a sensible first step - it can confirm or rule out an eye-related cause quickly. If the cause isn't optical, we'll advise you on the right next step.
Yes - children with uncorrected vision problems often experience headaches after reading or screen time. They may not describe it as a headache, so watch for rubbing eyes, avoiding reading, or complaining of tiredness after school.
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