Difficulty seeing at a distance
Difficulty seeing objects in the distance is called myopia, or nearsightedness.
It’s an extremely common refractive error—in fact, in many developed countries, about half of the population needs this correction.
If you’re nearsighted, you may have difficulty reading road signs, watching TV, or seeing things in the distance. Bad vision at far can also result in feeling fatigued when driving or playing sports.
Nearsightedness is caused by the eyeball being too long compared to the refractive power of the crystalline lens. This causes the focusing to take place in front of the retina, so the retinal image is blurred, much like a photo taken by an unfocused camera lens.
The simple solution to correct nearsightedness is to wear a corrective lens that will focus the light back onto the retina. Lenses that correct myopia are sometimes called “negative lenses” because they send the light focus backwards.
In Japan and in many other countries, a large part of the population suffers from myopia, and Nikon has developed unique optical technologies to give them the best vision at far distances.