Pingueculitis is the inflammation of a pinguecula, a small yellowish bump that forms on the white of the eye. A pinguecula on its own is harmless and extremely common, but when it becomes irritated and inflamed, the resulting flare-up is called pingueculitis. It causes redness, discomfort, and a gritty feeling in the eye that can be alarming if you don’t know what’s happening.
How It Differs From a Pinguecula
A pinguecula is a deposit of protein, fat, or calcium that develops on the conjunctiva, the thin clear tissue covering the white of your eye. It usually appears on the nasal side (the side closest to your nose) and looks like a small, slightly raised yellowish spot. Most people with a pinguecula never notice it and have no symptoms at all.
Pingueculitis is what happens when that deposit becomes inflamed. The blood vessels around the bump dilate and release inflammatory chemicals, including histamine and prostaglandins, the same substances your body produces during allergic reactions and other inflammatory responses. This is what causes the sudden redness, swelling, and irritation. The bump itself hasn’t changed in any dangerous way. It’s the tissue around it that’s reacting.
What Triggers a Flare-Up
The same environmental factors that cause a pinguecula to form in the first place can trigger it to flare into pingueculitis. The major ones are ultraviolet light exposure, wind, dust, and sand. People who work outdoors for long stretches are at the highest risk. Age also plays a role, as pingueculae become more common and more prone to irritation over time.
Contact lens wearers face an additional trigger. The constant friction of the lens edge against the conjunctiva can irritate the area around a pinguecula and provoke inflammation even in younger people who wouldn’t typically develop problems. Dry environments, air conditioning, and anything else that dries out the surface of the eye can also set off a flare, because the raised bump disrupts the normal tear film. When tears can’t spread evenly across the eye’s surface, the exposed area becomes irritated more easily.
Symptoms to Recognize
The hallmark of pingueculitis is localized redness around the yellowish bump, making it much more visible than usual. You may also notice:
- Foreign body sensation: a persistent feeling of sand or grit stuck in your eye
- Burning or itching
- Dryness that doesn’t fully resolve with blinking
- Mild swelling of the conjunctiva near the bump
Vision is typically unaffected. If you notice blurry vision, that’s more commonly associated with a pterygium, a related but different growth that extends onto the cornea. A pinguecula stays on the white of the eye and doesn’t invade the cornea, which is one of the key distinctions between the two conditions.
How It’s Treated
Most flare-ups of pingueculitis resolve with straightforward treatment. In mild cases, artificial tears are often enough to calm the irritation by restoring moisture to the eye’s surface. If you find yourself using artificial tears more than four times a day, preservative-free formulations are a better choice because they’re gentler on the delicate front layers of the eye.
For more significant inflammation, prescription anti-inflammatory eye drops can provide faster relief. A clinical study comparing a steroid drop to a non-steroidal anti-inflammatory drop found that both provided dramatic relief of signs and symptoms over a 14-day course, with drops used several times daily at first and then tapered down. These are short-term treatments to calm the flare, not something you’d use indefinitely.
Surgery is rarely necessary for pingueculitis. Surgical removal of the underlying pinguecula is generally reserved for cases involving persistent inflammation that doesn’t respond to drops, cosmetic concerns, or situations where the bump interferes with contact lens fitting. The vast majority of people manage flare-ups with drops alone and never need a procedure.
Conditions That Look Similar
Pingueculitis can look a lot like other causes of a red, irritated eye. Episcleritis, which involves inflammation of the tissue just beneath the conjunctiva, produces a similar patch of redness but without the visible yellowish bump. A pterygium also appears in the same part of the eye but is distinguished by its wing-shaped growth of fleshy tissue that extends onto the cornea. If you already know you have a pinguecula and the redness is centered right around it, pingueculitis is the most likely explanation. If you’re unsure, an eye exam can sort it out quickly.
Potential Complications
Pingueculitis itself doesn’t damage vision. The main concern with a longstanding pinguecula, whether or not it flares up, is its effect on the tear film. Because the bump creates an uneven surface, tears don’t distribute properly over that area, which can lead to chronic dry eye symptoms like burning, itching, and intermittent blurriness from an unstable tear layer. Over time, repeated inflammation and irritation can also cause mild scarring of the conjunctiva, though this is uncommon.
A pinguecula does not turn into a pterygium. While both conditions are caused by similar environmental exposures and look somewhat alike, they develop through different processes. A pterygium involves the growth and invasion of new blood vessel-rich tissue onto the cornea, which a pinguecula does not do.
Preventing Flare-Ups
Once you know you have a pinguecula, the goal is to reduce how often it becomes inflamed. The most effective step is protecting your eyes from UV light with wraparound sunglasses whenever you’re outdoors. This also shields against wind and airborne dust, two other common triggers. Keeping your eyes well-lubricated with artificial tears, especially in dry or air-conditioned environments, helps the tear film cover the bump more evenly and reduces the friction that leads to irritation. If you wear contact lenses, paying attention to fit and minimizing wear time on windy or dusty days can make a noticeable difference.