Presbyopia usually occurs due to difficulty and tiredness in reading, even with occasional double vision. Your refractive treatment is indicated for those who want to dispense with the use of glasses quickly and efficiently. In Nivaria Clinic We are specialists in presbyopia surgery. If you have had the progressive appearance of difficulty focusing images closely when reading, looking at your mobile or computer, we can help you.
Why does presbyopia occur?
It is produced by a progressive aging of the lens, a structure similar to a zoom of a camera. The lens is a lens located behind the pupil and in front of the retina, which is able to change its shape according to the visual needs at all times.
From the 40 years, this lens is losing elasticity and therefore its ability to accommodate, hindering everyday tasks such as reading or using the mobile. This problem can be corrected with the use of specific glasses or contact lenses. In more advanced ages, the lens will also be opacified resulting in the development of the cataract.
What factors contribute to age-related accommodation loss?
- Decreased elasticity of the substance and the lens capsule.
- The volume of the lens increases progressively with age. It is more difficult to deform a large body than a small body.
- Reduction of the zonulo-ciliary mechanical efficiency (muscles and tendons of focus), due to changes in its geometry.
What are the symptoms of presbyopia?
The main symptom is the poor near vision that manifests when the patient begins to move away from nearby objects, in order to obtain a clear image. This can also lead to eyestrain or eyestrain, presenting red eye, stinging, eye heaviness, headache ... Other symptoms are also highlighted:
- Reverse of the next point, which forces the reading material away to be seen more clearly.
- In the incipient presbytes, in relation to the attempts of excessive accommodative effort, it is even possible to produce a pseudomyopia (focus spasm).
- Also due to the increase in accommodative effort and the synkinetic reflection of the accommodative convergence that it carries with it, a transient diplopia can be caused.
What treatment is recommended for presbyopia?
What is the treatment with multifocal lens?
With this intervention, the lens is removed, which has already lost or is losing its ability to focus closely, and is replaced by a multifocal intraocular lens, which acts as an artificial lens. This lens offers different fixed focus planes (far and closer distances) and it is the brain that chooses the most appropriate approach for each situation thanks to a procedure called pseudo-accommodation. In this way, patients recover a high range of vision and can perform almost all their activities without using glasses or contact lenses, from reading a book to driving. This treatment allows eliminating associated defects and avoids the future possibility of cataracts.
What is the final result after the intervention?
The treatment is ambulatory and the recovery time is very fast. During a variable period in each case (2-4 weeks) there will be an adaptation to the new optical system acquired. It is tried that the patient after his intervention has the greatest possible independence of correction and the highest quality for the distances most used in his habitual life (personalization in each case), although it is possible that in some cases and for situations in which it is required a lot of visual effort (computer for many hours, night driving ...) or a lot of precision or sharpness indicates the instillation of artificial tears or non-reflective resting glasses of zero or low graduation.