Spherical contacts are simple spherical lenses used to treat myopia, hyperopia and presbyopia.
Toric lenses are cylindrical lenses that rely on gravity and lid interaction to rotate to the right angle in order to correct the warp in the cornea that causes astigmatism.
Bifocal and multifocal contacts are intended for individuals with presbyopia. These lenses can provide two or more corrections that gradually shift throughout the contact to provide corrective refraction for aging eyes, both alone and in conjunction with additional disorders.
Monovision contacts are prescribed so that one eye is set to see far away, and the other is set to see close up and is used in patients with presbyopia. In time, the eyes and brain adjust to provide one clear field of vision. Because brains are smart.
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