Corneal Infection: Causes, Treatments, and What You Need to Know

When your corneal infection, an inflammation or ulcer of the clear front surface of the eye. Also known as keratitis, it can start with a scratch, a dirty contact lens, or even a splash of contaminated water—and quickly turn serious. This isn’t just redness or discomfort. A corneal infection can blur vision, cause intense pain, and if left untreated, lead to permanent scarring or even blindness. It’s not rare: over 1 million cases are reported worldwide each year, mostly from improper contact lens care or minor eye injuries that go ignored.

There are three main types you need to watch for. Bacterial keratitis, the most common form, often caused by Staphylococcus or Pseudomonas bacteria shows up fast—redness, pus, and sharp pain within hours. Fungal keratitis, usually from plant material or soil exposure creeps in slowly, often after trauma in rural areas, and doesn’t respond to regular antibiotics. Then there’s viral conjunctivitis, often caused by herpes simplex virus, which can reactivate and attack the cornea. Each type needs a different treatment, and guessing wrong can make things worse.

What you’ll find in the posts below isn’t just theory—it’s what works in real life. From how nitrofurantoin can accidentally trigger eye reactions in some patients, to why certain antibiotics like ofloxacin are frontline choices, to how medication safety in emergencies includes protecting your eyes during disasters—these aren’t random links. They’re connected. You’ll see how generic drugs cut costs without cutting corners, how expiration dates on eye drops matter more than you think, and why some people get recurrent infections because their immune system is quietly struggling. There’s even a post on how advertising tricks people into thinking brand-name eye drops are better, when the generic version works just as well.

If you’ve ever worn contacts, had an eye injury, or noticed your vision getting cloudy after a minor scratch, this collection is for you. No fluff. No jargon. Just straight answers on what to do, what to avoid, and when to run to the doctor instead of reaching for the old eye drops in your bathroom cabinet.