Heterochromia





Heterochromia Your irises are the colored part of each eye. Sometimes they’re a different color from one another. Or one iris might contain different colors. If you’re born with it, you probably won’t have other symptoms or need treatment. Sometimes it’s a sign of a rare condition you get from your parents at birth. An injury or disease can cause it later in life. ​ .



Haemolacria





Haemolacria Yes, you really can cry tears of blood. But it isn’t so much a disease as a symptom. Causes include: • Blood vessels that don’t grow the right way • Tumors • Inflamed tissues • Bacterial or viral infections It’s more common in children and teens. Treatment depends on the cause. ​ .



Cat Eye Syndrome





Cat Eye Syndrome This disease can cause a notch or gap in parts of your eyes. Your doctor will call it a coloboma. When it affects your iris or pupil, your eye might look like a cat’s. You can also get colobomas in other organs and body parts. Most of the time they result from a problem with your genes. They show up when you’re born. You may need a team of doctors to manage the different symptoms.



Polycoria





Polycoria Your pupil is a round hole that gets bigger as light fades and smaller as light brightens. It’s rare, but some people have more than one working pupil in a single eye. It isn’t clear what causes Polycoria, but there may be a link to conditions like glaucoma and cataracts. Not everyone needs treatment, but surgery can restore dimmed vision.



Eye Problems - Healthline





Diseases and Disorders


Many eye diseases have no early symptoms. They may be painless, and you may see no change in your vision until the disease has become quite advanced. The single best way to protect your vision is through regular professional eye examinations. Of course, between examinations, if you notice a change in your vision – or you think your eye may be injured in any way – contact your eye care professional immediately. Age-Related Macular Degeneration Age-related macular degeneration (AMD) is the physical disturbance of the center of the retina called the macula


Bulging Eyes

Bulging eyes, or proptosis, occurs when one or both eyes protrude from the eye sockets due to space taking lesions such as swelling of the muscles, fat, and tissue behind the eye


Cataracts

Cataracts are a degenerative form of eye disease in which the lens gradually becomes opaque and vision mists over. Cataracts in Babies In rare cases, children develop cataracts in the first few years of their lives.


CMV Retinitis

CMV Retinitis is a serious infection of the retina that often affects people with AIDS (Acquired Immune Deficiency Syndrome) and that may also affect people with other immune disorders.


Color Blindness

Color blindness is not actually blindness in the true sense but rather is a color vision deficiency—people who are affected by it simply do not agree with most other people about color matching.


Crossed Eyes (Strabismus)

Crossed eyes (or strabismus) occur when a person's eyes are not able to align on the same point at the same time, and appear to be misaligned or pointed in different directions.


Diabetic Macular Edema

Diabetic Macular Edema, DME, is caused by fluid accumulation in the macula. Patients with DME typically experience blurred vision which can be severe.


Eye Floaters and Eye Flashes

Floaters are small specks or clouds that move across your field of vision—especially when you are looking at a bright, plain background, like a blank wall or a cloudless blue sky.


Glaucoma

Glaucoma occurs when a build-up of fluid in the eye creates pressure, damaging the optic nerve.


Keratoconus

When the cornea in the front of the eye, which normally is round, becomes thin and cone-shaped.


Lazy Eye

Commonly known as lazy eye, amblyopia is the poor vision in an eye that does not receive adequate use during early childhood.


Low Vision

Whenever ordinary glasses or contact lenses don't produce clear vision, you are considered to have low


vision.

Ocular Hypertension Ocular hypertension is an increase in pressure in the eye that is above the range considered normal.


Retinal Detachment

When the retina detaches, light-sensitive membrane in the back of the eye becomes separated from the nerve tissue and blood supply underneath it.


Eyelid Twitching

Sometimes your eyelid simply twitches.


Uveitis

Uveitis is the inflammation of the inside the eye, specifically affecting one or more of the three parts of the eye that make up the uvea.




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