The US Food and Medicines Administration authorized the use of a few azlidine -based ophthalmic drops to control the loss of the vision associated with age
The Progressive loss of vision It is something that It usually affects people over the yearsdue to aging, ocular fatigue and various diseases or injuries. In recent days A product was approved to correct the vision closely without the need for glasses.
The FDA, the United States Food and Medicines Administrationauthorized the use of some aleclidin -based ophthalmic drops of the Lenz Pharmaceutical Company, to treat the presbyopiathe loss of close vision associated with age. It is a compound that It was used in Europe since the 70s To treat glaucoma and work Gently contracting the iris of the eyewhich produces a myopization effect, that is, It helps to focus more closely nearby objects.
The ophthalmologist specializing in glaucoma of the Hospital of Sant Pau and the Barraquer ophthalmological center, Jesús Téllez Vázquez, explained: “It is a compound that selectively affects the pupil, counteracts its diameter and increases the depth of the focus, which can be used to improve the vision of about many people who, with 40-45 years, have begun to have presounding problems”
Dried ophthalmologist
According to the laboratory, this product has the advantage that does not affect the ciliary muscle (the fibers that allow adapting the vision)which increases its tolerance and reduces its adverse effects Regarding other medications that had been tested for this purpose.
The specialist details that it should be applied “Once a day and its effect lasts about ten hours“In addition, he points out that” the headache and eyebrow pain disappears or decreases or decreases “that produced other drugs that contract the pupil, and” the risk of retinal detachment is “reduced.”
However, Tellez comments that post -commercialization experience will have to be pending, that is, to the evolution of those who begin to use it. In this sense, the president of the Catalan Society of Ophthalmology, Maria Isabel Canut, said that “The effect is achieved 30 minutes after putting the drops and is very dependent on the light conditions, so the effect decreases as the hours pass”In this way, he affirms that the treatment does not constitute any revolution to address the presbyopy or will prevent those who lose vision from stop using glasses generalized.
Miopia Vision
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The laboratories that manufacture the drops approved by the FDA, known as Vizz, plan to start marketing them in USA generalized in the Fourth quarter of this year.
What is the presbyopy and what are the causes
The presbyopy is the gradual loss of the ability of the eyes to Focus nearby objectsthat is, when the eyes lose little by little The ability to see objects close. It is a normal part of aging and you can begin to notice shortly after 40 years.
The symptoms can be:
- A tendency to sustain the reading material further to see the letters clear
- Blurred vision at a normal reading distance
- Ocular tired or headaches after reading or performing thorough jobs
Lenses-Vision
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To form an image, the eye depends on the cornea and the lens to focus the light that the objects reflect. The closer the object is, the more the lens is flexed:
- The cornea It is the transparent and halfpheric surface of the anterior part of the eye.
- The lens It is a transparent structure whose shape and size are similar to those of an M&M confite.
- Both structures They divert (refract) the light that enters the eye to focus the image on the retina, located on the internal part of the posterior wall of the eye.
In this way, the lens, unlike the cornea, is slightly flexible and can change shape with the help of a circular muscle that surrounds it. When you look at something distance, the circular muscle relaxes. When you look at something close, the muscle contractswhich allows the lens, which is relatively elastic, curve and change its focus capacity.
It is for this reason that The presbyopy is caused by a tightening of the lens of the eye, which happens with aging. As the lens becomes less flexible, it can no longer change shape to focus close images. Consequently, these images are seen out of focus.
Source: Ambito
I am an author and journalist who has worked in the entertainment industry for over a decade. I currently work as a news editor at a major news website, and my focus is on covering the latest trends in entertainment. I also write occasional pieces for other outlets, and have authored two books about the entertainment industry.
