Unequal pupils may indicate physiologic anisocoria, a birth defect; drugs used to treat other eye conditions; or neurological conditions that affect the third cranial nerve, according to The Merck Manual Home Edition. Disorders in the brain that affect the pupils include strokes, bleeding in the brain, infections or tumors.Continue Reading
Physiologic anisocoria is marked by pupils that appear naturally different in size. This condition occurs in 20 percent of the population, and the difference in sizes does not affect how people see. Pupils affected by physiologic anisocoria react to light normally, notes The Merck Manual Home Edition. Eye disorders and drugs used to treat them may cause unequal pupil sizes. Homatropine is used for inflammation of the eye, and pilocarpine treats glaucoma. Both of these drugs may cause pupils to have different sizes. Iritis, or inflammation of the eye, and glaucoma can also make the pupils become unequal.
Strokes and brain hemorrhaging can affect the pathways of the cranial nerves that control muscles and actions of the eye. Brain disorders such as tumors and infections can also affect the pupil sizes, but these are not as common as strokes and bleeding, explains The Merck Manual Home Edition. Other symptoms may be a cause for concern if they appear alongside unequal pupils. These symptoms include droopy eyelids, double vision, loss of vision, headache and eye pain and could be warning signs of a more serious medical condition in the brain.Learn more about Vision
Scleral melanocytosis, amelanotic conjunctival nevi and scleral thinning are three eye conditions associated with gray spots on the whites of eyes, explains EyeSmart. The first two are benign conditions but still require monitoring by an eye health professional because they are associated with potential development of eye diseases.Full Answer >
Patients often require laser eye surgery when they suffer from refractive eye conditions, such as nearsightedness, farsightedness or astigmatism, according to the University of California San Francisco Medical Center. Laser eye surgery makes use of a computer-controlled laser to sculpt the cornea for better focusing.Full Answer >
Ocular hypertension, or high eye pressure, has many causes, including excessive aqueous production, inadequate aqueous drainage, certain medications, eye trauma and other eye conditions, according to All About Vision. If left untreated, high eye pressure can cause glaucoma and permanent vision loss in some individuals.Full Answer >
Ophthalmology is a medical specialty covering all aspects of eye health, while optometry is a limited non-physician health care profession related to correcting vision problems and diagnosing and treating many eye conditions, according to the American Association for Pediatric Ophthalmology and Strabismus. The term "eye doctor" is most often used by the public to refer to an optometrist.Full Answer >