Posterior keratoconus is a rare eye condition that affects the back surface of the cornea. The cornea is the clear window at the front of your eye. In ...

Posterior Ischemic Optic Neuropathy (PION) means the back part of the optic nerve does not get enough blood and oxygen for a period of time. The optic nerve is ...

The posterior capsule is an ultra-thin, transparent membrane that hugs the back surface of the eye’s natural lens. Think of it as the back wall of a tiny clear ...

Posterior Amorphous Corneal Dystrophy is a rare eye condition that changes the very back part of the cornea. The cornea is the clear, curved “window” at the ...

Post-traumatic endophthalmitis is a severe eye infection that happens after an eye injury. “Post-traumatic” means it follows trauma, such as a cut, puncture, ...

Post-streptococcal uveitis is an eye inflammation that shows up after a recent streptococcal infection, most often after a sore throat, tonsillitis, or a skin ...

Post-LASIK epithelial ingrowth means that some of the surface skin cells of the cornea (called epithelial cells) slide under the LASIK flap and start growing ...

Post-Injection Endophthalmitis is a severe infection inside the eye that happens after a needle injection into the eye (for example, an intravitreal anti-VEGF, ...

“Post capsular haze” (doctors usually say posterior capsular opacification or PCO) is a common problem that can happen months or years after cataract ...

Pressurized eye goggles are special, airtight goggles that gently change the air pressure around your eyes for a short time. When the pressure inside the ...

Polypoidal choroidal vasculopathy is a disease that affects the layer of blood vessels under the retina, called the choroid. In PCV, a network of new vessels ...

Pneumatic retinopexy is an eye procedure that uses a small gas bubble to press the retina back into place so it can seal and heal. Doctors use this method for ...

Plus–minus lid syndrome is a rare eye–lid problem where one upper eyelid droops (ptosis) while the other upper eyelid pulls up too far (retraction). Both ...

A benign mixed tumor is a non-cancerous growth that most often starts in a salivary gland. Doctors also call it pleomorphic adenoma. “Benign” means it does not ...

The lacrimal gland sits in the outer-upper corner of each eye socket and makes the watery part of your tears. A pleomorphic adenoma of the lacrimal gland is a ...

Pleomorphic adenoma in the eye almost always starts in the lacrimal gland, which is the tear-making gland that sits at the outer, upper corner of the eye ...

Plateau iris is a shape problem inside the front of the eye. The colored part of the eye (the iris) looks flat in the middle, but the base of the iris is ...

A pituitary adenoma is a growth that starts in the pituitary gland, a small hormone-making gland that sits behind your nose at the base of your brain. Most of ...

A pinguecula is a small, raised spot on the white part of the eye. The white part of the eye is called the sclera. The clear skin that covers the sclera is ...

Pilomatrixoma is a benign (non-cancer) skin tumor that grows from the hair root cells that live deep in the skin. These special hair root cells are called hair ...