Generally, it's not okay to touch your eye, especially your eyeball. The eye and surrounding area are delicate and susceptible to infection.
Why You Shouldn't Touch Your Eye
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Infection Risk: Your hands carry numerous bacteria and viruses. Touching your eye transfers these potentially harmful microorganisms, increasing the risk of infections like conjunctivitis (pink eye). As stated by the American Academy of Ophthalmology, "Use a clean towel or tissue every time you touch your face or eyes and wash your hands frequently." https://www.aao.org/eye-health/tips-prevention/pink-eye-myths-facts-conjunctivitis
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Damage to Eye Tissues: The skin around your eyes is incredibly thin and sensitive. Frequent touching or rubbing can lead to:
- Tears in the tissue: This can cause broken capillaries in the eyelids and bruising.
- Corneal abrasions: Rough or dirty fingers can scratch the cornea, the clear front part of your eye.
- Retinal detachment: Although rare, forceful touching could potentially dislocate lenses or trigger retinal detachment, according to Quora. https://www.quora.com/Is-it-safe-to-touch-your-eyeball
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Irritation and Discomfort: Even if you don't cause an infection or significant damage, touching your eye can irritate it, leading to redness, itching, and discomfort. As noted, "There is simply no good reason to touch your eyeball." https://www.quora.com/What-would-happen-if-I-touched-my-eye-with-my-finger
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Accidental Injury: You risk accidentally scratching or injuring your eye, particularly the cornea, which is very sensitive. Touching your pupil is impossible; you are likely touching your cornea instead. https://www.reddit.com/r/explainlikeimfive/comments/7si6mv/eli5_why_does_it_hurt_to_touch_your_pupil_but_not/
What to Do if You Accidentally Touch Your Eye
If you accidentally touch your eye, rinse it thoroughly with clean, lukewarm water or a saline solution. If you experience any significant pain, redness, blurry vision, or other concerning symptoms, consult an ophthalmologist or eye doctor immediately.