Ensemble pour y voir plus clair
There are no translations available.Comme chaque année , la réunion "ENSEMBLE POUR Y VOIR PLUS CLAIR" ,qui se tient à la clinique IOS , rassemble des médecins de plusi...
All newsPresbyopia
What is presbyopia ?
Presbyopia appears to 40-45 years. It is the result of a natural evolution of the view.
Presbyopia is characterized by a loss of vision in reading small print or when there is insufficient light. Specifically, you should increase your distance away from reading your book or your journal, you need more light for you make-up ...
This reflects a natural decrease in ability to focus your lens, that is to say its ability to make a development as does the auto focus a camera. With age, your lens loses its elasticity.
The development of reading and near vision is no longer correct.
Sighted: you see it difficult to close
With age, your eye accommodates less because your lens loses its elasticity
Presbyopia is hereditary ?
Presbyopia is a consequence of the aging of the eye, it is not hereditary.
How to evaluate presbyopia ?
Presbyopia is measured in diopters.
The lack of vision is similar in all individuals.
It is estimated to + 0.75 diopters to 45; + 1.50 diopters to 50 years + 2 to 55 diopters; + 2.50 diopters to 60 diopters + 3 and after age 60.
This addition joins forces with the goggles that you wear may have: at 60, if you were myopic - 6.00 diopters, you will need to be corrected - 3.00 diopters of near (- 6 + 3) if you were sighted of + 2.00 diopters, you will need to be corrected to + 5.00 diopters (2 +3).
Thus, myopia in the range of - 3.00 diopters at age 60 can continue to read the newspaper without glasses.
How will change presbyopia ?
Presbyopia usually starts around 40-45 years. It grew to about 60, then stabilizes.
How can you correct presbyopia ?
It can be corrected by wearing glasses, sometimes by contact lenses. Techniques for laser correction and evaluation are under development.
A 6 years without correction and without carrying visual defect, the reading distance for accommodation is possible to 7 cm on average at age 20, she is 10 cm to 40 years, 30 cm and 70, she spends an average of 2 meters! This varies depending on the visual defect before being sighted.
