Presbyopia is a condition of the eye experienced by individuals in varying degrees at some point of time in their lives. People with presbyopia find it tough to focus on objects that are close to them and often have to place reading material at arms length to see them properly. They may also experience headaches and eyestrain while performing work that requires them to concentrate their vision at a short distance. There is no treatment for presbyopia but there are numerous measures that can assist in rectifying presbyopia to permit enhanced near vision.
When individuals’ age, the lenses of the eyes happen to be rigid and their flexibility decreases together with their capability to focus in an efficient manner.
- People with presbyopia generally require treatment for both close up vision and distance vision.
- Commonly eyeglasses and contact lenses are the preferred options.
- There are four kinds of eyeglasses that are obtainable.
- Reading glasses are utilized for the purpose of focusing on objects that are close.
- Bifocals are eyeglasses containing two points of focus pertaining to near vision and distant vision.
- The upper portion of bifocal lens is employed to rectify other eye complications such as myopia or astigmatism while the lower portion is utilized to rectify close up vision.
- Trifocals contain three focusing points; one pertaining to near vision, one related to immediate vision, and one linked to distant vision.
- Progressive addition lenses employ dissimilar focus points but slowly alters them in order that no visual portions are as perceptible as in bifocals and trifocals.
- Bifocal and monovision contacts are also accessible.
- In monovision, one eye is rectified for close vision while the other is corrected for distant vision.
Contemporary surgery for presbyopia consists of Laser assisted in situ keratomileusis, or Lasik, and CK or Conductive keratoplasty. These procedures provide the patient with monovision so it is advisable to test monovision with contacts prior to surgery, particularly with reference to Lasik where alterations to the cornea are enduring. Lasik entails permanent alteration to the shape of the cornea in one eye permitting better near vision while leaving the other eye untouched. LTK and CK use diverse procedures but both intend to alter the shape of the cornea by means of thermal conduction of particular areas in the cornea.
There are also a number of procedures that are in the experimental stage such as Surgical Reversal of Presbyopia. In this process Scleral Expansion Bands are placed into the sclera which makes the muscle fibers that focus the lens, to stiffen. However, the procedure carries the risks of eye infections and reduced blood circulation in the eye.
With new cures, development in technology, and the augmented requirement for a cure for presbyopia, people encountering the problem should have numerous alternatives.