What Should I Do If I Get a Chemical in My Eye?

A chemical splash, from cleaning products, a car battery, pool chemicals, or a work spill, produces instant burning, tearing, and fear of blindness, and people freeze, unsure whether to rinse or drive to the hospital first. The honest answer is that what you do in the first minute matters more than almost anything a doctor does later: rinse first, ask questions second.

A chemical burn injures the conjunctiva (the surface membrane) and the cornea (the clear front window). Acids tend to burn the surface and then stop, because the damaged tissue forms a barrier. Alkalis are worse: they dissolve cell membranes and drive deeper into the cornea and even into the eye, continuing to cause damage after the initial contact.

Severe burns can destroy the limbal stem cells at the edge of the cornea, the cells the eye relies on to heal its own surface. When those are lost, the cornea cannot repair itself normally, leading to scarring and vision loss. That is why immediate, prolonged flushing, which dilutes and washes the chemical out, is the most important step you can take.

Household and workplace alkalis include lye-based drain and oven cleaners, ammonia, bleach, and lime or cement, which becomes strongly alkaline when it mixes with the eye's moisture. Acids include battery acid, pool acid, and some rust removers. Alkalis penetrate rapidly, so a splash that looks mild can worsen over the following hours.

Severity is graded by how much of the cornea has clouded and how much of the limbus (the border where cornea meets white) has lost its blood supply. A clear cornea with pink, well-supplied limbal tissue usually heals well. A porcelain-white, bloodless limbus and a hazy cornea signal a severe burn with a guarded outlook. This is why an eye that looks white and 'quiet' after a burn can be the most dangerous, the whiteness may mean the surface vessels have been destroyed.

Every chemical splash is urgent, but these point to a severe burn that needs an ophthalmologist immediately:

• A cornea that looks hazy, cloudy, or white rather than clear.
• The white of the eye looking blanched or porcelain-white around the colored part.
• Severe pain, marked light sensitivity, and significant loss of vision.
• Any splash of a strong alkali such as drain cleaner, oven cleaner, ammonia, lime, or cement.
• Symptoms that worsen over the hours after the initial rinse.

After confirming irrigation has been done, the doctor checks the pH in the tear film with a strip and keeps rinsing until it is neutral. Vision is measured, and the eye is examined under the slit-lamp with fluorescein dye to map how much of the cornea and conjunctiva is burned. A key step is assessing the limbus for blanching, which grades the injury and predicts healing. Eye pressure is checked, because alkali burns can spike it, and the lids and fornices are swept for retained particles of caustic material such as lime or cement.

Copious irrigation until the pH normalizes is the foundation of care. Beyond that, treatment is matched to severity and may include topical antibiotics to prevent infection, steroid drops to calm inflammation early on, and a dilating drop for comfort. Preservative-free lubricants, vitamin C, and medicines that support surface healing are often used, and eye pressure is controlled if it rises. Severe burns may need an amniotic membrane placed on the surface, or later surgery to restore the ocular surface. None of this replaces the first step: the eye must be thoroughly flushed at the scene.

• Do not delay rinsing to identify the chemical or call around first; flush immediately.
• Do not try to neutralize an acid with a base or a base with an acid; use plain water or saline only.
• Do not rub the eye, which grinds the chemical deeper into the surface.
• Do not stop rinsing early because the pain eased; alkali damage continues underneath.
• Do not patch the eye and 'wait to see,' and do not assume a white, less-painful eye is a good sign, it can be the opposite.

A chemical in the eye is an emergency: rinse first for 15 to 20 minutes, then call May Eye Care Center or go to the nearest emergency room without delay. For patients around Hanover, calling on the way lets the team be ready to continue irrigation and examine the eye the moment you arrive. Never wait overnight to see whether a chemical splash settles on its own.

Flush the eye with water or saline for 15 to 20 minutes right away, then get emergency care, alkalis especially can keep burning, and immediate rinsing is what protects your sight.