Atypical Optic Neuritis
Optic neuritis means the optic nerve—the nerve that carries vision signals from the eye to the brain—becomes inflamed. This inflammation can damage the nerve fibers and cause vision problems like ...
Rx Eye & Vision Care (A – Z)
Diabetic Retinopathy
Diabetic retinopathy is an eye disease that happens when long-term high blood sugar from diabetes damages the tiny blood vessels in the retina, the light-sensitive layer at the back of the eye. Over ...
Diabetic Papillopathy
Diabetic papillopathy is a condition seen in people with diabetes where the head of the optic nerve (the “optic disc”) becomes swollen or puffy. This swelling is not because of a tumor or sudden ...
Diabetic Macular Ischemia (DMI)
Diabetic Macular Ischemia (DMI) is a complication of diabetic eye disease where the tiny blood vessels supplying the central part of the retina (the macula) become damaged or blocked, causing poor ...
Diabetic Macular Edema
Diabetic Macular Edema is swelling in the central part of the retina called the macula, caused by leakage of fluid from tiny, damaged blood vessels in people with diabetes. The macula is responsible ...
Descemet Membrane Detachment
Descemet’s membrane is a thin, strong layer at the back of the cornea. It sits just under the innermost cells of the cornea (the endothelium) and helps keep the cornea clear by supporting those ...
Dermoid Cysts
A dermoid cyst is a benign (non-cancerous) lump that forms because of cells that are in the wrong place during early development. These cells are usually from the outer layer of the embryo (called ...
Dermis Fat Graft
A dermis fat graft is a piece of a person’s own skin (without the top layer) plus the fat beneath it, taken from one part of the body and moved to another to fill a missing volume. It is called ...
Dermatomyositis
Dermatomyositis is a rare disease where the body’s own immune system attacks the muscles and the skin. It causes muscle weakness and a special kind of skin rash. The word “dermatomyositis” comes from ...
Dermatochalasis
Dermatochalasis is a medical term that means too much loose skin on the eyelids. Most often it happens on the upper eyelids but can also affect lower lids. The skin becomes extra, droopy, and may ...
Demyelinating Optic Neuritis
Demyelinating optic neuritis is inflammation of the optic nerve caused by loss or damage of its myelin sheath—the protective coating that helps nerve signals travel fast and clearly. When myelin is ...
Demodex Infestation (Demodicosis)
Demodex infestation, also called demodicosis, happens when tiny mites named Demodex that normally live on human skin grow too many in number or trigger inflammation. These mites live in or near hair ...
Idiopathic Intracranial Hypertension
Idiopathic Intracranial Hypertension is a condition where the pressure inside the skull (intracranial pressure) is too high, but doctors can’t find a tumor, infection, or other obvious cause—hence ...
Mohr-Tranebjærg Syndrome
Mohr-Tranebjærg syndrome (MTS), also called Deafness–Dystonia–Optic Neuronopathy (DDON) syndrome, is a rare, inherited disease that slowly damages nerves in a specific pattern. It affects hearing ...
Deafness-Dystonia-Optic Neuronopathy Syndrome
Deafness-Dystonia-Optic Neuronopathy syndrome, also called Mohr-Tranebjærg syndrome (MTS), is a rare genetic disease that slowly damages nerves in different parts of the body. People with this ...
Dead Bag Syndrome
Dead Bag Syndrome is a rare, late problem that happens years after cataract surgery. In cataract surgery, the cloudy natural lens of the eye is removed and an artificial lens (called an intraocular ...
Dacryocystitis
Dacryocystitis is an infection or inflammation of the tear-drainage sac (the lacrimal sac) that sits just beside the bridge of your nose. Tears normally flow from the eye into this sac and then down ...
Dacryocele / Dacryocystocele
A dacryocele is a soft, cyst-like swelling that forms where the tear-drainage sac sits beside the nose because the tear duct is blocked at both ends, trapping fluid and sometimes mucus inside. ...
Dacryoadenoma
Dacryoadenoma is a rare benign lacrimal gland tumor best managed by early recognition and complete surgical removal. Supportive care—including lifestyle, diet rich in omega-3s and vitamins, ocular ...
Dacryoadenitis
Dacryoadenitis means inflammation of the lacrimal gland. “Dacryo-” refers to tears, and “-adenitis” means gland inflammation. So it literally means the tear gland is inflamed. This inflammation can ...
