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Anisometropia is caused by common refractive errors, such as astigmatism, far-sightedness, and myopia, in one eye. Anisometropia is likely the result of both genetic and environmental influences. Some studies suggest, in older adults, developing asymmetric cataracts may cause worsen anisometropia.
Amblyopia has three main causes: Strabismic: by strabismus (misaligned eyes) Refractive: by anisometropia (difference of a certain degree of nearsightedness, farsightedness, or astigmatism ), or by significant amount of equal refractive error in both eyes.
Aniseikonia can occur naturally or be induced by the correction of a refractive error, usually anisometropia (having significantly different refractive errors between each eye) or antimetropia (being myopic (nearsighted) in one eye and hyperopic (farsighted) in the other.)
Specialty. Ophthalmology. Anisocoria is a condition characterized by an unequal size of the eyes' pupils. Affecting up to 20% of the population, anisocoria is often entirely harmless, but can be a sign of more serious medical problems.
Presbyopia is a typical part of the aging process. [4] It occurs due to age related changes in the lens (decreased elasticity and increased hardness) and ciliary muscle (decreased strength and ability to move the lens), causing the eye to focus right behind rather than on the retina when looking at close objects. [4]
Suppression of an eye is a subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia. The brain can eliminate double vision by ignoring all or part of the image of one of the eyes.
Most cases of episcleritis have no identifiable cause, although about a third of cases are associated with various systemic diseases. Often people with episcleritis experience it recurrently. Treatment focuses on decreasing discomfort, and includes lubricating eye drops.
Treatment of allergic conjunctivitis is by avoiding the allergen (e.g., avoiding grass in bloom during "hay fever season") and treatment with antihistamines, either topical (in the form of eye drops), or systemic (in the form of tablets).
Ophthalmic drug administration is the administration of a drug to the eyes, most typically as an eye drop formulation. Topical formulations are used to combat a multitude of diseased states of the eye.
Ophthalmology. Retinopathy of prematurity ( ROP ), also called retrolental fibroplasia ( RLF) and Terry syndrome, is a disease of the eye affecting prematurely born babies generally having received neonatal intensive care, in which oxygen therapy is used because of the premature development of their lungs. [2]