Nearsightedness and farsightedness are referred to as refractive errors of the eye, meaning that incoming light rays are refracted incorrectly as they enter the eye. The lack of proper focusing results in the incorrect message being sent to the vision center of the brain, causing blurry vision at certain distances.
In order to focus images correctly, your eye relies on the cornea (surface) and lens. Ideally, each of these components has a perfectly smooth curvature, allowing for the incoming light to be refracted so that they are sharply focused on the retina of the eye. Nearsightedness, or myopia, occurs when the cornea is too curved or the lens is longer than normal, causing light to be focused just in front of the retina instead of squarely on it. This causes faraway objects to look blurry, and can also cause eye strain, headaches, and fatigue.
The chance that a child will develop nearsightedness increases if either parent is also nearsighted. Premature birth can also alter the shape of the eyes, causing myopia.
Hyperopia is the exact opposite of myopia. Instead of the lens being too long, farsightedness is caused by a shorter-than-normal lens. This causes light to be at a focus point that is technically behind the retina, resulting in difficulties focusing on nearby objects such as books.
Hyperopia also runs in families. Many children are born with the condition, but tend to outgrow it.
Both myopia and hyperopia can be diagnosed with a routine eye exam. Corrective lenses (glasses or contacts) can be used to correct these conditions. Refractive surgery (LASIK) is a more permanent option, minimizing or eliminating the need for corrective lenses.
The surgeons at the Boston Laser have written four textbooks on laser correction techniques and have designed several instruments that are used in the procedures. They have performed thousands of surgeries and are committed to giving each patient the best outcome possible. Call (617) 566-0062 today to schedule a consultation.