Presbyopia is the condition of having blurry near vision when trying to read or perform other close work, such as using the computer. Characterized by the wearing of half eyes, it has been stereotyped as something that happens to ‘old people’ and is lumped into the same imagery as canes, shawls, rocking chairs and sensible shoes. So, it is not surprising that many who are first diagnosed with presbyopia go into a mini-panic, thinking that social security checks and nursing homes are just around the corner.
Well, that is not necessarily the case.
The onset of presbyopia takes place around the age of 35-40 and despite what some might say, that is not old. In a world where we see more people reaching their 90s and remaining spirited and active for many of those later years, the onset of presbyopia seems to be coming on at a relatively young age. In this light, typing the condition as an ‘old people’s affliction’ doesn’t seem to fit.
No one escapes presbyopia because it occurs naturally as eyes age. The natural lenses of the eyes thicken, as we grow older, become more opaque as the protein that forms their building blocks becomes older and less transparent from the center outward. All of this causes less flexibility, less clarity and the decreasing ability to focus on close objects.
Common corrections for presbyopes include the aforementioned half eyes, bifocals and progressive addition eyeglasses. The latter have no ‘dividing lines’ in the lenses, allowing for a smoother focusing transition from distance to near sight. Some patients are satisfied to have a pair of glasses for near vision and another for distance—switching them as needs demand. Also prescribed at times are half eyes in combination with contact lenses powered for distance.
Emerging Presbyopes, who were contact-wearers before being diagnosed, ask if this means they are stuck with having to wear glasses. Fortunately for the 92% who wish to remain in contacts, technology in the past few years has allowed the manufacture of bifocal and multi-focal lenses that treat presbyopia. Another application is monovision, the technique of fitting one’s dominant eye for distance vision and the other for near vision. However, this is viable only for those who can adapt to the dissimilar prescriptions and wouldn’t be bothered by a lack of depth perception that results.
Overall, the contact lens option is certainly desirable for those who want to continue the youthful freedom and natural feel that contacts give without being reminded of ‘advancing age’ by the use of eyeglasses.
Hopefully, armed with the above information, having to deal with presbyopia should be less panic inducing. Taking everything into consideration, it becomes just another treatable eye condition that happens as we go about the business of living our lives.
Monday, October 5, 2009
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment