The apples of your eyes
Sure, you’ve heard this expression before, but it perfectly conveys the importance that we give to our eyesight.
If you’re reading this web page, it’s probably because your eyes need correction for one of various conditions:
Presbyopia – the inability to see close objects.
This form of eyesight deterioration – specifically near vision - comes naturally with age and is caused by the loss of flexibility in the eye’s lens. As we age, elasticity in the lens is reduced. Presbyopia, the lack of flexibility of the crystalline lens of your eye, makes it difficult to focus on objects that are near.
You may have presbyopia if you show one or more of the following signs: tendency to hold reading material at arm’s length, blurred vision when holding reading material at a normal length, or eye fatigue and headaches when reading closely. To compensate for the signs and symptoms of presbyopia, Nikon recommends either a near-intermediate lens or
a progressive lens.
We encourage you to consult your local eye care specialist for more information.
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Myopia (or nearsightedness) – the inability to see clearly at a distance.
Nearsightedness is a result of the eye being slightly longer than usual from front to back. This can cause images to focus in front of the retina instead of directly on its surface. As a result, far objects appear blurred and are difficult to focus upon. Myopia is measured using negative diopters. The further the number of diopters is from zero, the more pronounced the myopia or nearsightedness. Nikon offers a variety of single vision lensesdesigned to correct this condition
and allow for a return to normal vision.
We encourage you to consult your local eye care specialist for more information.
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Hyperopia (or farsightedness) – the inability to see clearly up close.
This condition occurs when the eye is too short from front to back. As a result, images focus behind the retina instead of directly on its surface. When people are farsighted, close objects appear blurry and difficult to focus on. Hyperopia is measured in positive diopters. The farther the number of diopters is from zero, the more pronounced the farsightedness. Nikon has a variety of single vision lenses designed to eliminate the problems of hyperopia for
a return to a more normal, natural vision.
We encourage you to consult your local eye care specialist for more information.
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Astigmatism – rather than just being blurred, an image appears distorted, causing imprecise vision at any distance.
Astigmatism is a refractive error caused by an irregularly shaped cornea, appearing more oblong, like a football, as opposed to the more normal spherical form. Measured in diopters, cylinder meridian or axis, astigmatism can cause double images or ghosting. These visual distortions can be corrected with any of a variety of single vision lenses designed to 
help you see the world as it actually exists.
We encourage you to consult your local eye care specialist for more information.
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