While we all age differently, one of things most people can count on is some type of vision support (contacts or glasses) for some portion of your visual field after you are forty years old. This condition is call age-related Presbyopia (because it is part of the natural course of aging) and usually occurs around the age 40. Forty-somethings begin to experience blurred near vision when reading, sewing or working at the computer and instead of struggling, the solutions available can be quite easy.
You can't escape age-related presbyopia, even if you've never had a vision problem before. Even people who are nearsighted (their vision is stronger with up-close objects) will notice that their near vision is starting to blur when they wear their usual eyeglasses or contact lenses to correct their distance acuity.
Presbyopia is widespread in the United States where we now have over 135 million Americans age 40 and older.
When people develop presbyopia, they find they need to hold books, magazines, newspapers, menus and other reading materials at arm's length in order to focus properly. When they perform near work, such as embroidery or handwriting, they may develop headaches, eye strain or feel fatigued.
Presbyopia is caused by an age-related process. The eye's lens stiffens with age, so it is less able to focus when you view something up close. Proteins in the lens makes the lens harder and less elastic over time. Age-related changes also take place in the muscle fibers surrounding the lens. With less elasticity, the eye has a harder time focusing up close. This is different than disorders such as astigmatism, nearsightedness and farsightedness, which are related to the shape of the eyeball and are caused by genetic and environmental factors. Presbyopia generally is believed to stem from a gradual thickening and loss of flexibility of the natural lens inside your eye.
If you are over 40 and this describes this vision you are experiencing, please see an eye doctor. There are a range of choices to address this issue and return you site to the quality and acuity you desire.