Contact dermatitis
Contact dermatitis is an inflammation of the skin caused by direct contact with an irritating substance. Alternative Names Dermatitis - contact; Allergic...

Contact lens electrode on eye (image)
The electroretinography (ERG) test measures the electrical activity of the retina to light. It is performed by placing an electrode on the cornea of the...

Cataract
cataract is a cloudy area in the lens of the eye. This article focuses on cataracts in adults. For information on cataracts in children, see: Congenital cataracts Alternative Names Lens...

Presbyopia
Presbyopia is a condition in which the lens of the eye loses its ability to focus, making it difficult to see objects up close. Causes The condition is associated with aging and gets worse over...

Corneal ulcers and infections
...(scratches) Foreign bodies in the eye Inadequate eyelid closure Severely dry eyes Svere allergic eye disease Various inflammatory disorders Contact lens wear, especially soft contact lenses worn overnight, may cause a corneal ulcer. Herpes simplex keratitis is a serious viral infection. It...

Congenital cataract
congenital cataract is clouding of the lens of the eye, that is present at birth. The lens of the eye is normally a clear structure, which focuses light received by the eye onto the retina....

Homocystinuria
...health care provider may notice a tall, thin (Marfanoid) stature. Other signs include: Curved spine (scoliosis) Deformity of the chest Dislocated lens of the eye If there is poor or double vision, an ophthalmologist should perform a dilated eye exam to look for dislocation of the lens or nearsightedness....

Marfan syndrome
...chest (pectus excavatum) or pigeon breast (pectus carinatum) Highly arched palate and crowded teeth Hypotonia Learning disability Movement of the lens of the eye from its normal position (dislocation) Nearsightedness Scoliosis Small lower jaw (micrognathia) Thin, narrow face Exams and Tests The doctor...

Keratoconus
...structure of the cornea with gradual bulging from the normal round shape to a cone shape. Causes The cause is unknown. Keratoconus is more common in contact lens wearers and people with nearsighted eyes. Some researchers believe that allergy may play a role. Symptoms This condition causes decreased...

Alport syndrome
...failure or heart failure may be present or may develop. Exams and Tests Changes to the eye, including the fundus (posterior inner part of eye), lens, cataracts, or lens protrusion (lenticonus) Elevated blood pressure Tiny amounts of blood in the urine (microscopic hematuria) The following tests...

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