Presby-LASIK – Not ready for Primetime
LASIK eye surgery is still the most widely used surgical operation in the United States. Presbyopia (the "old eyes") is the most common vision problem affecting everyone over 50 years of age. Nevertheless, this common problem and the common solution encountered difficulties.
This type of surgery is usually short-sighted, distant and asymmetric. Successful for people in the 20s, 30s and 40s. By the age of 50, most people feel that the effect of presbyopia makes it more difficult to visualize, other than distance. (It is capable of the elderly people who seize the newspapers to try to read them.) This is presbyopia in action. Even people who have laser eye surgery in their youth still need reading glasses as they grow old.
Monovision LASIK is currently the most commonly used LASIK surgery to treat presbyopia. This procedure corrects dominant eyes for remote vision and non-dominant eyes for near vision. Depending on what you are looking at, your mind decides which eye to use and ignores the (outside) input from the other eye. Many adapt to monovision, but they have a disadvantage.
With monovision, whenever crunchy vision is needed, either close or distance, corrective lenses may be required to use both eyes simultaneously. This is especially true in situations where depth sensing (which requires both eyes) is required.
For this reason, other procedures for presbyopia correction (the so-called "Presby-LASIK") have long evolved. The most common approach is to dissect different angles of corneas, so some parts of the cornea can be used for long distance vision and other parts for near vision.
Technologies have improved (for example, Wavefront for mapping the specificities of each patient and mapping IntraLase to all laser procedures), presby-LASIK's success has increased. However, even today the procedure is not the FDA's endorsement. In the United States, this process is only part of a research experiment.
Research experiments have shown that the process is most effective when retrieving visions into remote patients' repertoire. It was not so successful to provide remote vision for short-term patients, although researchers continue to see new ways and better results.
More research is needed to optimize the horizons around the cornea. It is possible that such an "ideal" agreement is not acceptable. Instead, an individual approach can be applied to presby-LASIK, where every day's priorities determine the best surgical approach. Patients who read or work with detailed work can define a close vision as a priority, while others are more sensitive to remote sensing.
While it is possible that patients in presby-LASIK are found in patients outside the United States, the procedure is generally "not ready for primetime". However, since the technique of laser eye surgery has improved, it may not be long before we get a surgical intervention that offers us clear ideas over the decades of our lives.
- Published On : 4 months ago on May 27, 2018
- Author By : 346@dmin
- Last Updated : May 27, 2018 @ 6:09 am
- In The Categories Of : Uncategorized