Nearsightedness and Farsightedness: The Basics By Dr. Ferzaad Moosa

Myopia Sight

posted by DyxlexicEditor

 

 Normal Vision Sight

DyxlexicEditor

posted by DyxlexicEditor

At the Excel Laser Vision Institute, I perform various ophthalmology procedures, including LASIK surgery. As of this writing, I have conducted more than 60,000 LASIK procedures for patients in need of corrective surgery to fix defects such as myopia, or nearsightedness, and hyperopia, or farsightedness. To help my patients better understand the differences between the two conditions, I have outlined the basics below.

In short, the definitions of myopia and hyperopia are simple: with myopia, patients see objects more clearly at close distances, but the clarity of these objects fadesas they recede. Hyperopia causes patients to see objects more clearly at greater distances, but as the objects move closer, they become blurred and distorted. LASIK surgery can help with both conditions, as well as others such as astigmatism.

Myopia and hyperopia differ primarily in terms of cause. Hyperopia generally develops from aging, genetics, migraines, injuries, and even sinus infections. On the other hand, myopia can come from one or more sources including curvature myopia, the curvature of one of the eye’s refractive surfaces; index myopia, a variance in the eye’s index of refraction; or axial myopia, a boost in the eye’s axial length. Reading with convex lenses that converge, or focus, the light reduces the focusing effort, or accommodation, required by the reader, decreasing the odds of becoming myopic or worsening the condition.

Generally, either defect can crop up at any age. Corrective instruments such as eyeglasses and contacts can help mitigate either condition but last only as long as the corrective devices are worn. The condition dictates the type of lenses given to patients. For example, extreme hyperopia may call for convex lenses.

LASIK surgery provides a more permanent method of correction. To discover how the Excel Laser Vision Institute can help with myopia and hyperopia, as well as other conditions, visit our website at www.exceleye.com.

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