What is it?
What exactly is presbyopia?
Presbyopia is an evolutionary problem and not a static situation. Related to the declining of near vision. Presented at the age of 40-45 years with a pronounced difficulty in reading, especially when there is low lighting. Gradually, the problem is converted to a "disability" (the concept of multifocality ceases to exist) and near vision is characterized as satisfactory (clear) only with special spectacles.
It is a disease that occurs in all people, regardless of their sex or if they already have other refractive errors such as myopia, hyperopia and astigmatism. For example, if myopic people they experience presbyopia, in order to be able to read, they are forced to take off their glasses when their myopia is low, or to use glasses with a lower myopia grade, when their myopia is high. Finally, it is noted that in humans with hyperopia, presbyopia may occur at an earlier age.
What can cause presbyopia?
Presbyopia is due to wearing (with aging) of the crystalline, the natural lens of the eye and reduced resilience (ability to adjust focus) on short distances.
Presbyopia can be treated with:
- presbyopia vision glasses (bifocals or multifocal)
- multifocal contact lenses
- refractive surgery (surgery with excimer laser and using special techniques e.g. Presby-LASIK and Monovision)
- surgery to implant a multifocal intraocular lens (intraocular multifocal lens) and replacing the crystalline, the natural lens of the eye, in combination for the removal of cataract
Is it cured completely?
Is there a way for the ultimate treatment of presbyopia?
After the age of 40 the ability of automatic adaptation of the eye at all distances, close and distant, gradually decreases. This, according to the existing theories, is due whether to gradual loss of elasticity of the eye lens, which loses the ability to change a curvature and focus at near distances, either to the progressive atrophy due to aging of the muscle, onto which the lens rests (ciliary muscle).
The adaptation of our vision at close distances, in contrast to myopia, hyperopia and astigmatism, that are static conditions and due to the shape and size of each eye is a dynamic and constantly changing eye function. That is why the treatment of presbyopia is not so easy as that of myopia, hyperopia and astigmatism.