Bulging eyes (exophthalmia).

Do your eyes seem more bulging or prominent than normal, as if you are always being surprised? This appearance may be a classic symptom of Graves’ disease, a type of autoimmune hyperthyroidism. In this disease, the immune system mistakenly attacks the tissues behind the eye, pushing them outward.

In addition to the physical change, you may experience eye pressure, double vision, dry eyes, or difficulty closing your eyes completely while sleeping. It’s not just a cosmetic problem: If left untreated, it can seriously affect your vision. This condition is more common in women between the ages of 30 and 50, and is often accompanied by weight loss, nervousness, and insomnia.

8. Iris color changes or brown rings.

If you look in the mirror and notice a brown, greenish, or golden ring around your iris, you may have what is called a Kayser-Fleischer ring, a visible sign of Wilson’s disease. This is a genetic disorder in which the body accumulates excess copper, affecting organs such as the liver, brain, and eyes.

Although rare, it can cause severe neurological damage if not caught early. This ring appears on the cornea and does not affect vision, but is a valuable clue for doctors to detect the disorder. If you experience symptoms such as tremors, slurred speech, or involuntary movements along with this ring, seek medical attention immediately.

9. Chronic redness.

A little red in your eyes after a long night or from allergies is normal. But if your eyes are constantly bloodshot, or have a constant burning sensation, it could be a sign of something more serious.

Persistent redness can be related to inflammatory conditions such as uveitis, an inflammation of the middle layer of the eye that can be associated with autoimmune diseases such as lupus or rheumatoid arthritis. It may also indicate an eye infection, glaucoma, or chronic conjunctivitis.

10.

Severe eye pain.

An eye that hurts, that even blinking does not relieve, deserves urgent attention. Acute eye pain can have several causes, some of which are very dangerous. One of the most serious is angle-closure glaucoma, which occurs when the pressure inside the eye suddenly rises.

You may experience severe pain, nausea, vomiting, and blurred vision with halos around lights. It can also be a sign of a corneal ulcer, optic neuritis, or even a serious infection. If the pain doesn’t go away or gets worse and is accompanied by vision loss or fever, it’s time to run to the eye doctor.

11. Changes in color vision.

Do colors no longer look as vivid as they used to? This change may indicate problems in the optic nerve.

One possible cause is optic neuropathy, often related to diabetes or hypertension. It may also be an early sign of age-related macular degeneration (AMD), which affects the center of the retina. Changes in color perception are not always noticed right away, but if you detect anything unusual, it’s best to consult.

12. Extreme sensitivity to light (photophobia).

If light bothers you more than usual, you may have photophobia, a symptom of several conditions. The causes can range from something as mild as a migraine to an eye infection such as keratitis, endophthalmitis, or even meningitis.

It is also common in people who suffer from dry eye syndrome or who spend long hours in front of unprotected digital displays. If you work with a screen all day, adjust the brightness, use blue light filters, and take breaks every 20 minutes to blink and look away. If you notice any strange changes in your vision or eyes, no matter how minor, don’t let it go.