eye-ctionaryaka: our dictionary of common vision conditions
You can see close objects clearly, but objects farther away appear blurred. It’s very common. In fact, almost 30% of the U.S. population is nearsighted.
The inability to focus on close objects due to the hardening of your eye's natural lens over time. It’s often referred to as “the aging eye condition”. Prescription reading glasses, bifocals, trifocals or contact lenses help you compensate.
Faraway objects are seen more clearly than objects that are near. A comprehensive eye exam* includes testing for farsightedness.
Vision appears blurry or stretched out because the cornea is irregularly curved. Nearly every one of us has astigmatism to some degree. It’s easily corrected by eyeglasses, contact lenses or surgery.
If your eye doesn’t produce tears properly, you can get dry eye, along with inflammation of your eye’s surface. A new study shows that caffeine can increase tear production and may someday be a treatment for dry eye syndrome.
*Study by the American Academy of Opthalmology, The EYE M.D. Association.
Those dark shadowy shapes that can look like spots, strands or squiggly lines. They can be annoying, but generally don't interfere with your sight.
computer vision syndrome
Fatigued, blurred, irritated eyes from extended computer use, which can also cause headaches and double vision. TIP: Look away from your screen every 20 minutes to give your eyes a break.
A clouding of your eye's natural lens that affects vision, often related to aging. Protecting your eyes from the sun and eating foods high in in antioxidants may help ward off cataract development.
A group of diseases that can damage the optic nerve and possibly result in loss of vision or blindness. With early diagnosis, it's possible to protect your eyes from the effects of these conditions.
An age-related disease that affects the part of your eye that sees fine details, making it hard to see straight ahead.
what is it?
Pupillary distance measures the space (in millimeters) between the pupils of your eyes.
where can I find it?
On previous eyewear receipts or your prescription. Or measure it yourself with our handy PD ruler.download PD ruler
I have two numbers for my PD...
Don't worry. Some doctors take your distance for each eye. Your just a simple equation away from your pupillary distance.
1.Add the two numbers
The first step is to add the numbers together. We recommend a calculator because no one's perfect.
2.Divide by 2
Once you have the two numbers added together just divide them by 2 and that is you're pupillary distance!
Double check your number and then enter it in the pupillary distance field.