Eye Conditions
Astigmatism
Astigmatism occurs when the cornea is irregularly shaped - like a football or a teaspoon - preventing light from converging on the retina. Parts of the image may focus on the retina, while others focus behind it or in front of it. This has the effect of bending light inconsistently and causing blurred or distorted images. Astigmatism can occur alone or in addition to either nearsightedness or farsightedness. |
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Astigmatism Video
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Nearsightedness
Nearsightedness, or myopia, occurs when the curvature of the cornea is too steep or the eyeball is too long. With nearsightedness, the eye's strong refractive power forces the image to be focused in front of the retina, rather than on it. When light focuses in front of the retina, near objects can be seen clearly, but far objects appear blurry. |
Nearsightedness Video
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Farsightedness
Farsightedness, or hyperopia, is caused when the curvature of the cornea is too flat, or the eyeball is too short, forcing light to focus behind the retina. With farsightedness, the eye's weak refractive power causes far objects to be seen more clearly and near objects to appear blurred. The eyes may have to strain to maintain things in focus. The first appearance of hyperopia is strongly age-dependent; younger patients have much less difficulty with hyperopia.
Treatments
You can correct your Astigmatism, Nearsightedness or Farsightedness by the following options:
• Glasses
• Contacts
• LASIK
• Lens Implants |
Farsightedness Video
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Presbyopia is part of the natural aging process which requires all people to need reading glasses for near activities sometime after age 40. Surgical options to reduce our dependency on reading glasses are divided into two catergories: procedures which result in monovision, and clear lens extraction, in which a bifocal artificial lens may be implanted in each eye of qualified patients.
Monovision refers to the dominant eye being corrected to see in the distance, and the nondominant eye being corrected for close up activities, such as reading, computer work, or other close up activities. Because the presbyopic eye is unable to see both at distance and near, one eye is assigned to perform each of these functions independently. Though the human brain rapidly adapts to this “monovision,” it does not allow for binocular vision (simultaneous vision from both eyes), and therefore, depth perception is notably diminished. Depth perception is immediately restored by wearing glasses which equalize the prescription, and therefore the vision in both eyes.
Procedures used to perform monovision correction for presbyopia include:
- LASIK (laser in situ keratomileusis)
- PRK (photo-refractive keratectomy)
- Phakic lens Implant (Visian ICL)
Utilizing the clear lens extraction procedure maintains depth perception by implanting a bifocal lens, providing BOTH distance and near vision in each eye. |
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