Ocular GVHD is eye inflammation and surface damage that can happen after an allogeneic (donor) bone-marrow or stem-cell transplant. Donor immune cells see ...
A Boston Keratoprosthesis (Boston KPro) is an artificial cornea. “Artificial cornea” means a clear, man-made window that a surgeon places in the front of the ...
A corneal perforation means there is a full-thickness hole in the cornea, the clear “window” at the front of your eye. The cornea keeps the eye sealed, focuses ...
A descemetocele is a dangerous “last-layer bulge” in the cornea that happens when an ulcer eats through almost all the corneal tissue, leaving only the inner ...
Malignant optic glioma is a cancer of the optic pathway (the cable system that carries visual signals from the eyes to the brain). In simple terms, “malignant” ...
Malignant melanoma of the eyelid is a dangerous skin cancer that starts in pigment-making cells (melanocytes) located in the thin skin of the upper or lower ...
Malarial retinopathy means changes in the back of the eye (the retina) that happen during severe malaria, most often with Plasmodium falciparum. The retina is ...
Malar means the cheekbone area. Doctors also call this the midface, because it sits in the middle third of the face, between the lower eyelid and the upper ...
Madarosis means you are losing the hairs of your eyelashes, your eyebrows, or both. The loss can be mild (thinning), patchy, or complete. It can happen on one ...
Macular telangiectasia (MacTel) is an eye condition that affects the macula, the tiny central area of the retina that gives you sharp, straight-ahead vision ...
A macular hole is a tiny, round gap that opens in the very center of the retina (the fovea), where our sharpest, most detailed vision lives. In a ...
Macular corneal dystrophy is a rare, inherited eye disease that makes the clear front window of the eye (the cornea) slowly turn cloudy. Tiny “spots” and a ...
Rhegmatogenous retinal detachment (RRD) is when the light-sensing layer at the back of your eye (the retina) peels away from the wall of the eye because a tear ...
Macula-on rhegmatogenous retinal detachment means the retina has peeled off because of a hole or tear, but the center of sight (the macula) is still attached. ...
A retinal arterial macroaneurysm is a balloon-like bulge that forms in a small artery on the surface of the retina (the light-sensing layer at the back of your ...
Cortical visual impairment (often called cerebral visual impairment) is a vision problem caused by how the brain processes visual information, not by a problem ...
Metamorphopsia means things look the wrong shape. Straight lines may look wavy or bent. A square window can look tilted, and printed letters may look crowded, ...
Nyctalopia means you cannot see well in low light. People with nyctalopia struggle at dusk, at night, or in dim rooms. It happens because the “night vision” ...
Patchy vision means parts of what you see are missing, faded, smudged, or oddly shaped—like someone cut small pieces out of your view or smeared a clear window ...
Diffuse blurred vision means your sight looks soft, hazy, or out of focus across most or all of what you see, not just in one small spot. It can affect one eye ...
