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Astigmatism is a refractive error that causes blurred or distorted vision due to an irregular curvature of the eye. Learn about the types, causes, diagnosis, and ...
Anisometropia is a condition of unequal refractive power in the eyes, which can lead to amblyopia or binocular vision problems. Antimetropia is a rare type of anisometropia where one eye is myopic and the other is hyperopic. Learn about the diagnosis and treatment options for anisometropia and antimetropia.
Astigmatism is a type of optical aberration where rays from different planes have different foci. Learn about the forms, causes, and corrections of astigmatism in optical systems and vision science.
Refractive error, also called ametropia, is a problem with focusing light on the retina due to the shape of the eye and/or cornea. Learn about the common types (nearsightedness, farsightedness, astigmatism, presbyopia), causes, diagnosis, and treatment options.
Anisocoria is a condition of having different sized pupils, which can be harmless or a sign of serious medical problems. Learn about the causes, diagnosis, and examples of anisocoria, such as Horner's syndrome, oculomotor nerve palsy, and pharmacological agents.
Visual impairment is the partial or total inability of visual perception, which may be caused by various conditions or problems in the eye or brain. Learn about the symptoms, complications, treatment, and prevalence of visual impairment, as well as the different categories and definitions used by WHO and other countries.
Limbal relaxing incisions (LRI) are a refractive surgical procedure to correct minor astigmatism in the eye. They are simpler and less expensive than laser surgery and are often used as part of cataract surgery.
Pseudoexfoliation syndrome is an aging-related eye disease that causes protein clumps in the eye structures and can lead to glaucoma and vision loss. Learn about its signs, symptoms, causes, diagnosis, and treatment from this comprehensive article.