Presbyopia is a natural part of the aging process. It is due to hardening of the lens of the eye causing the eye to focus light behind rather than on the retina when looking at close objects. It is a type of refractive error along with nearsightedness, farsightedness, and astigmatism. Diagnosis is by a eye exam.
https://en.wikipedia.org/wiki/Presbyopia
Definition of Presbyopia. Presbyopia: The loss of the eye's ability to change focus to see near objects. The reasons for this loss of the power of accommodation are not yet fully known. It is conventionally said to be due to the lens becoming less elastic with time. Presbyopia is associated with aging. It occurs in everyone.
http://www.medicinenet.com/script/main/art.asp?articlekey=10642
Presbyopic lens surgery; a clinical guide to current technology. Presbyopic lens surgery; a clinical guide to current technology. plans to create a commercial version of the electrically adjusted eyeglasses to market to presbyopic people, who typically wear bifocals, trifocals, or graded lenses.
http://www.thefreedictionary.com/Presbyopic
Inability of the eye to focus sharply on nearby objects, resulting from loss of elasticity of the crystalline lens with advancing age. [New Latin : Greek presbus, old man; see per in Indo-European roots + -opia.] pres′by·op′ic (-ŏp′ĭk, -ō′pĭk) adj.
http://www.thefreedictionary.com/Presbyopic
In this article. Presbyopia is part of the natural aging process of the eye, and can be easily corrected. Technically, presbyopia is the loss of the eye's ability to change its focus to see objects that are near. It is not a disease. It's as natural as wrinkles, and it affects everyone at some point in life. Presbyopia generally starts to appear around age 40.
http://www.webmd.com/eye-health/eye-health-presbyopia-eyes
From New Latin, from Ancient Greek ï€ïî­ïƒî²ï…ï‚ (presbys, “old man), and New Latin -opia (“vision problem), from Ancient Greek á½¤ïˆ (åps, “eye).
http://www.yourdictionary.com/presbyopia
What is presbyopia? Presbyopia is a common type of vision disorder that occurs as you age. It is often referred to as the aging eye condition. Presbyopia results in the inability to focus up close, a problem associated with refraction in the eye. Yes. It is common to have presbyopia and another type of refractive error at the same time.
https://nei.nih.gov/health/errors/presbyopia
Presbyopia is a condition associated with aging of the eye that results in progressively worsening ability to focus clearly on close objects. Symptoms include a hard time reading small print, having to hold reading material farther away, headaches, and eyestrain.
https://en.wikipedia.org/wiki/Presbyopia
Eyeglasses are the simplest and safest means of correcting presbyopia. Eyeglasses for presbyopia have higher focusing power in the lower portion of the lens. This allows you to read through the lower portion of the lens and see properly at distant through the upper portion of the lens.
https://nei.nih.gov/health/errors/presbyopia
Examples from the Web for presbyopia Expand. Historical Examples. Still another defect of vision is known as presbyopia or farsightedness due to old age. The Science of Human Nature William Henry Pyle. Old sight, known as presbyopia, is a common defect of vision in advancing years.
http://www.dictionary.com/browse/presbyopia
definition of presbyopia
Presbyopia is part of the natural aging process of the eye, and can be easily corrected.