Ophthalmology >>>> What is presbyopia?
What is presbyopia?
The weakening of the accommodation of the eye as a result of age-related changes affecting the degree of elasticity of the lens (a decrease in its elasticity) is called "presbyopia". With presbyopia, the ability to focus on objects close to the eye (at a distance of 12 - 14 inch) is lost, to perform work close to the eyes. In fact, hyperopia develops.
The process of development of presbyopia is associated with the compaction of the structure of the lens, as a result of which its elastic abilities are impaired, and dystrophic changes in the structure of the ciliary muscle of the eye, which weakens its contractile ability.
Presbyopia signs:
- Blurred vision when examining objects near the eyes;
- Eyes get tired quickly when working with small details;
- The outlines of objects blur near the eyes;
- Eyes get tired quickly;
- Photophobia may develop;
- Headaches appear, radiating to the orbit, the bridge of the nose, to the forehead;
- There is a need for brighter lighting, in moving objects away from the eyes for a more detailed examination.
Prevention of presbyopia does not give a full opportunity to slow down the development of the latter, since age-related changes lead to an inevitable loss of lens elasticity. But you can slow down the violation of metabolic processes by taking vitamins and microelements (group B, Ascorbic acid, Zinc, Magnesium, Copper). Care for the eyes, dosage of visual stress, health exercises for the eyes can postpone the development of presbyopia for several years.
Treatment for presbyopia includes optical or surgical correction of vision. Optical correction includes the selection of lenses with a gradual addition of diopters according to age (40 - 45 - 50 - 55 - 60 years), or the selection of glasses for working near and far, or bifocal glasses (with a glass insert for near vision).
Surgical correction of presbyopia is possible in several ways:
- Laser vision correction with the formation of a multifocal surface on the cornea, which forms two focuses on the retina;
- Replacement of the lens with an artificial intraocular lens (monofocal or multifocal).
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