Eye and Vision Disorders
Information about eye and vision disorders
237 conditions
Double Vision (Diplopia)
Double vision, medically known as diplopia, occurs when a person sees two images of a single object instead of one clear image. This visual disturbance can be startling and disorienting, making everyday tasks like reading, driving, or walking downstairs challenging and potentially dangerous. The condition affects roughly 850,000 Americans each year, with cases ranging from temporary episodes lasting minutes to persistent problems requiring ongoing medical care.
Eye Pain
Eye pain represents one of the most concerning symptoms that sends people to doctors and emergency rooms worldwide. The discomfort can range from a mild irritation that feels like sand in your eye to severe, throbbing pain that makes it impossible to keep your eyes open. What makes eye pain particularly worrisome is that our eyes are precious and irreplaceable, so any threat to them naturally triggers alarm.
Progressive Outer Retinal Necrosis
Progressive Outer Retinal Necrosis represents one of the most aggressive viral infections affecting the eye. This devastating condition strikes the retina with swift precision, causing rapid vision loss that can progress to complete blindness within days or weeks if left untreated. The disease primarily targets people with severely weakened immune systems, particularly those with advanced HIV/AIDS.
Lacrimal Sac Tumor
Deep within the corner of your eye lies a small, often forgotten structure called the lacrimal sac. This tiny pouch plays a crucial role in draining tears from your eyes into your nose, working quietly behind the scenes to keep your vision clear. Most people never think about this marble-sized structure until something goes wrong.
Purtscher Retinopathy
Purtscher retinopathy represents one of the most dramatic ways severe trauma can affect vision. This rare eye condition occurs when sudden, intense pressure changes in the body cause multiple white patches and bleeding to appear in the retina, the light-sensitive tissue at the back of the eye. The condition was first described by Swiss ophthalmologist Otmar Purtscher in 1910 after he observed distinctive retinal changes in a patient who had suffered severe head trauma.
Punctal Atresia
Punctal atresia represents one of the rarer eye conditions that parents encounter, yet its impact on a child's comfort and eye health makes understanding it essential. This congenital condition occurs when the tiny drainage openings in the eyelids, called puncta, fail to develop properly during fetal development, leaving them either completely absent or sealed shut.
Lymphangioma (Orbital)
Orbital lymphangioma represents one of the most challenging eye-related conditions pediatric specialists encounter. This rare benign tumor develops from the lymphatic vessels around the eye socket, creating fluid-filled cysts that can dramatically affect a child's vision and facial appearance. Unlike typical tumors that grow steadily, lymphangiomas have an unpredictable nature that keeps both families and doctors on their toes.
Neurofibroma (Orbital)
Orbital neurofibromas are benign nerve tumors that develop within the eye socket, growing from the nerve cells that surround and support the nerves controlling eye movement and sensation. These tumors typically grow slowly over months or years, creating a gradual change in eye appearance or function that patients and families often notice as subtle differences in how the eyes look or move together.
Varices (Orbital)
Orbital varices represent dilated, twisted veins that develop within the eye socket, creating a unique medical challenge that often puzzles both patients and doctors. These abnormal blood vessels can cause the eye to bulge forward, particularly when a person strains, coughs, or bends over, leading to a distinctive pattern of symptoms that come and go.
Arteriovenous Malformation (Orbital)
Orbital arteriovenous malformations represent one of the most complex vascular abnormalities affecting the eye socket. These rare conditions occur when arteries and veins connect directly without the usual network of tiny capillaries between them, creating an abnormal tangle of blood vessels around or behind the eye. Think of it like a highway bypass that sends traffic rushing directly from major roads to side streets, overwhelming the smaller pathways.
Schwannoma (Orbital)
Orbital schwannomas represent one of the rarest types of eye socket tumors, developing from the protective coating around nerves that serve the eye area. These benign growths arise from Schwann cells, which normally wrap around nerve fibers like insulation on electrical wires, helping nerve signals travel efficiently throughout the body.
Conjunctival Nevus
A conjunctival nevus is a benign pigmented spot that appears on the conjunctiva, the thin, clear membrane covering the white part of your eye. These small, usually brown or black spots are essentially birthmarks of the eye, similar to the moles you might find on your skin. Most people discover them during routine eye exams, though some notice them when looking in the mirror.
Spheroidal Degeneration
Spheroidal degeneration represents one of the most common age-related changes affecting the cornea, the clear front surface of the eye. This condition involves the gradual accumulation of tiny, golden-brown deposits within the corneal tissue, creating a distinctive appearance that eye doctors can easily spot during routine examinations. These deposits, which look like small droplets or spheres under microscopic examination, develop slowly over years of exposure to environmental factors.
Pellucid Marginal Degeneration
Pellucid marginal degeneration represents one of the most challenging corneal conditions that eye specialists encounter. This progressive disorder causes the clear front surface of the eye to thin and bulge outward, creating a distinctive crescent-shaped pattern along the lower portion of the cornea. Unlike its better-known cousin keratoconus, pellucid marginal degeneration affects a different area of the cornea and follows a unique pattern of deterioration.
Salzmann Nodular Degeneration
Salzmann nodular degeneration represents one of the more puzzling eye conditions that ophthalmologists encounter. This relatively uncommon disorder causes raised, grayish-white nodules to form on the cornea - the clear front surface of the eye. These bumpy deposits can make vision blurry and create discomfort that ranges from mild irritation to significant pain.
Brown Syndrome
Brown syndrome represents a fascinating quirk of eye mechanics that affects how smoothly our eyes move upward and inward. This rare condition occurs when the superior oblique muscle - one of six muscles controlling eye movement - cannot glide freely through its pulley-like tendon sheath near the inner corner of the eye socket.
Lens-Induced Glaucoma
Lens-induced glaucoma represents one of the more urgent eye emergencies that can develop when cataracts go untreated for extended periods. This condition occurs when changes in the eye's natural lens create a dangerous spike in eye pressure, potentially threatening vision within hours or days. Unlike the gradual pressure buildup seen in typical glaucoma, lens-induced glaucoma often strikes suddenly and requires immediate medical attention.
Choroidal Detachment
Choroidal detachment happens when fluid or blood collects between the choroid and the outer wall of the eye, causing the choroid to separate from its normal position. The choroid is a layer of blood vessels that sits between the retina and the white part of your eye, providing oxygen and nutrients to the outer retinal layers. When this separation occurs, it can affect vision and eye pressure in ways that require prompt medical attention.
Aphakia
Aphakia is a condition where the eye lacks its natural crystalline lens, the clear structure that normally helps focus light onto the retina. This absence can occur from birth as a rare congenital condition, but more commonly results from surgical removal during cataract surgery or following eye trauma. Without this natural lens, the eye loses its ability to focus properly, creating significant vision problems that require correction.
Lens Subluxation
Lens subluxation occurs when the natural lens inside your eye shifts from its normal position. The lens, which helps focus light onto the retina, is held in place by tiny thread-like fibers called zonules. When these fibers weaken, stretch, or break, the lens can move partially out of place - a condition doctors call subluxation. If the lens moves completely out of position, it's called dislocation.
Sign up for our weekly newsletter
Get the latest health information, research breakthroughs, and patient stories delivered directly to your inbox.