Many eye problems develop silently — without pain and without obvious symptoms. That’s why recognizing the warning signs is crucial.
Here are the key indicators that it’s time to schedule an eye exam and protect your vision.
Sudden changes in vision

Blurry or double vision, or any unexpected changes in how you see, can be a red flag.
These symptoms might be linked to common conditions like nearsightedness or farsightedness, but they can also signal more serious issues like cataracts or retinal damage. Don’t wait for things to get worse.
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Ongoing eye discomfort

Persistent irritation, redness, itching, or burning in your eyes can result from dry eye syndrome, infections, or more serious problems like corneal conditions or glaucoma.
If your eyes constantly feel “off,” it’s time for a professional check-up.
Headaches related to vision

Frequent headaches after reading or screen time may be more than just stress — they could be caused by eye strain or an outdated prescription.
An eye exam can reveal if your vision correction needs updating.
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Light sensitivity

Are bright lights suddenly painful or uncomfortable? This symptom, known as photophobia, could be a sign of an eye condition like cataracts or inflammation.
If light makes you squint or flinch, it’s worth getting your eyes checked.
Seeing halos around lights

Halos around lights — especially at night — can indicate developing eye conditions like cataracts or glaucoma.
If this symptom comes with other changes in your vision, it’s a strong signal to see an eye doctor.
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Color vision changes

If colors look different or you’re having trouble distinguishing them, you might be experiencing color vision deficiency or other underlying conditions.
It’s not just an inconvenience — it can be a warning sign.
Trouble focusing

If shifting focus between near and far objects becomes difficult, or if your vision blurs when trying to focus, it might be a refractive issue.
A proper eye exam can pinpoint the cause and help you see clearly again.
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Floaters and flashes

Seeing small specks or flashes of light in your vision?
These can be harmless — but if they increase suddenly or appear with shadows or light bursts, they may indicate a retinal tear or detachment. This needs immediate attention.
Difficulty seeing at night

Struggling to drive or see clearly in the dark? Night blindness can result from a range of issues, including cataracts or retinal problems.
Some causes are treatable, so early diagnosis makes a big difference.
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Loss of peripheral vision

Tunnel vision — being unable to see anything but what’s directly in front — is a serious symptom.
It can signal glaucoma or retinal damage, and could lead to permanent vision loss if not treated quickly.
This article is based on information from Shinagawa.com.