Cataracts themselves do not cause pain

A cataract is a clouding of your eye's lens. It develops slowly over time and does not have nerves that send pain signals. You may notice your vision getting blurry or dimmer, colors looking yellowed, or glare bothering you more than it used to — but the cataract itself will not hurt.

If you have a cataract and you are feeling eye pain, the pain is coming from something else. That something else may be minor, or it may need attention from your eye doctor soon. The key is to describe exactly what you feel and when, because that tells your doctor what to look for.

Key Takeaways

  • Cataracts cause blurred or yellowed vision and glare sensitivity, but not pain — pain signals a different problem.
  • Common causes of eye pain alongside cataracts include dry eye, inflammation inside the eye, or increased eye pressure.
  • Sharp pain, sudden vision loss, or pain with redness and discharge need to be seen by an eye doctor the same day or next morning.
  • Mild aching or discomfort that comes and goes may be dry eye or muscle strain, but your eye doctor should still rule out other causes.

Pain that needs same-day or next-morning attention

Call your eye doctor or go to an urgent care or emergency room if you have sharp pain in or around your eye, especially if it comes with sudden blurred vision, redness, or discharge. These can signal acute angle-closure glaucoma (a sudden spike in eye pressure), uveitis (inflammation inside the eye), or infection. These conditions can damage your vision if they are not treated quickly.

Also seek prompt care if you have eye pain along with flashing lights, a sudden shower of floaters (spots or cobwebs in your vision), or a shadow or curtain moving across your field of view. These can mean the retina is being pulled or torn, which is a medical emergency.

Mild or moderate pain that warrants a regular appointment

If your eye feels achy, tired, or mildly uncomfortable — especially by the end of the day — the most common cause is dry eye. Your eyes may produce fewer tears as you age, or tears may evaporate too quickly. Dry eye often worsens when you read, use a computer, or spend time in air conditioning or heating. It is not dangerous, but it is uncomfortable and your eye doctor can recommend drops or other treatments.

Another common cause is eye strain from focusing hard on close work. If you have a cataract, you may be squinting more to see clearly, which tires the muscles around your eye. Resting your eyes, adjusting lighting, or using over-the-counter artificial tears often helps. Still, mention it to your eye doctor at your next visit so they can rule out other causes.

Mild pain can also come from inflammation inside the eye, which your doctor can detect during an exam. This is less common but important to catch, because inflammation can lead to other problems if left untreated.

When to mention pain at your cataract surgery consultation

If you are scheduled for cataract surgery, tell your eye doctor about any eye pain you have been having, even if it is mild. They will examine your eye carefully to make sure the pain is not from a condition that needs to be treated before or instead of surgery. Some conditions — like advanced glaucoma or severe dry eye — may change how your doctor approaches surgery or what they recommend afterward.

Your doctor will also ask whether the pain is constant or comes and goes, whether it is sharp or dull, and whether anything makes it better or worse. Write down these details before your appointment so you remember them accurately.

What your eye doctor will check

During an exam, your eye doctor will measure the pressure inside your eye (a test called tonometry), look at the front and back of your eye with a microscope and other instruments, and ask about your symptoms in detail. They may put numbing drops in your eye so they can examine it without you feeling discomfort from the exam itself. They may also test how well your tears are working and whether your eye surface is dry or irritated.

If your doctor finds that your pain is from dry eye, they might recommend artificial tears, warm compresses, or prescription eye drops. If they find inflammation, they may prescribe anti-inflammatory drops. If they find high eye pressure, they will discuss treatment options with you. The point is that your eye doctor can usually figure out what is causing the pain and what will help.

Questions to ask your eye doctor

Before you leave your appointment, ask your doctor whether the pain you are feeling is related to your cataract or to something separate. Ask what you can do at home to feel more comfortable — for example, whether artificial tears, a humidifier, or taking breaks from screens would help.

Ask whether the pain is likely to get worse as your cataract develops, or whether it will stay the same. And ask whether treating the other cause of pain (like dry eye) should happen before cataract surgery, or whether it can wait. These answers will help you plan your care and know what to expect.

Frequently Asked Questions

Can a cataract cause pain if it is very advanced?

No. Even a very dense cataract does not cause pain because the lens has no nerves. However, a very advanced cataract can sometimes lead to other problems — like swelling inside the eye or a sudden rise in pressure — that do cause pain. That is why it is important to have any eye pain checked out, even if you know you have a cataract.

Is it normal to have eye pain after cataract surgery?

Some mild discomfort is normal for a few days after surgery, but sharp pain is not. If you have severe pain after surgery, contact your eye surgeon right away. Pain can signal infection, inflammation, or other complications that need prompt treatment.

Can dry eye get worse because of a cataract?

Not directly — the cataract itself does not cause dry eye. However, if you are squinting more because of blurred vision from the cataract, you may blink less often, which can make dry eye worse. Once your cataract is removed and your vision clears, you may find that dry eye improves.

Should I wait to see my eye doctor about pain, or go to urgent care?

If the pain is sharp, comes with redness or discharge, or is accompanied by sudden vision changes, go to urgent care or an emergency room the same day. If the pain is mild or moderate and has been going on for days without getting worse, you can call your eye doctor's office and ask whether you should come in soon or wait for your next scheduled visit.

What over-the-counter drops are safe to use for eye pain?

Artificial tears are safe for most people and can help if dry eye is the problem. Avoid drops that claim to "get the red out" — these can make dry eye worse over time. Do not use numbing drops (like those used before eye exams) at home, because they can mask serious problems. Ask your eye doctor which drops are right for you.