If the anterior-posterior dimension of the eyeball is too long, the focus point for an infinitely distant target is anterior to the retina. This patient would be diagnosed as having

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If the anterior-posterior dimension of the eyeball is too long, the focus point for an infinitely distant target is anterior to the retina. This condition is called myopia or nearsightedness. People with myopia can see close objects without problems. Hyperopia is farsightedness. Cycloplegia is paralysis of the ciliary muscle, with loss of accommodation. Presbyopia refers to a decrease in accommodation that occurs because of aging.

If the Anterior-Posterior Dimension of the Eyeball Is Too Long