Preassembled glasses can cause dizziness, headache and fatigue in reading.

President of the General Council of Colleges of Opticians-Optometrists, Juan Carlos Martinez Moral, remember that these glasses undergraduates only be used as an emergency spare.
The glasses are pre-assembled an ideal solution for presbyopia or farsightedness, as they are produced in standard sizes and dispense with individual adaptation of an eye care professional.
The crisis, the lack of users or the avoidance of a visual are the reasons why it has increased the consumption of pre-mounted goggles. The General Council of Colleges of optometrist warning that their use can have serious consequences for visual and ocular health.

Pre-mounted goggles that can be purchased in different outlets (gas stations, bazaars) without any sanitary control, often erroneously used to correct presbyopia or eyestrain. In this sense, the president of the General Council of Colleges of Opticians-Optometrists, Juan Carlos Martinez Moral, warns that “this kind of glasses are not more than a magnifying glass that are manufactured in a standardized way for all users.”

Users should be aware that, to correct his farsightedness, “the best is to go to an eye care professional such as optometrist looking for the best individual solution and custom glasses that will never be a pre-assembled, but slowly single vision, bifocal and progressive occupational or contact lenses, “said Martinez Moral.
But above all, because the individual adaptation of a lens by an optometrist is essential, since each person has a different morphological and anatomical characteristics and, of course, the glasses do not have it pre-assembled into account.

Presbyopia and pre-mounted goggles

The glasses are not a solution pre-assembled for presbyopia or farsightedness, which begins to emerge from 40 years when, in consequence of aging symptoms such as blurred vision or uncomfortable when reading or near vision work. It is a refractive condition in which the capacity of accommodation of the eyes is insufficient to see well up close.
Since presbyopia evolves over time, Moral Martinez recalls that “a specific optical solution is valid for two years. After that time, to make a new revision.”

Problems that can cause spectacles preassembled

These glasses are made of standard measures and graduation interpupillary distance matches only 5 percent of people with presbyopia.

The lenses are made mostly of plastic injection and no treatment of optical surfaces, so that the image produced has a lot of changes and do not have any control of optical quality.

Furthermore, the continued use of this type of glasses can cause dizziness and headaches, and fatigue and difficulty in reading.

Lenses being mounted under a standard interpupillary distance, the optical center of the lens does not coincide with the visual axis of the eye, so the continued use of this product leads to various prismatic effects and produce symptoms of visual discomfort.

The optometrist, quality assurance.

Preassembled glasses must meet certain requirements of safety, efficacy and quality.

The General Council of Colleges of Opticians-Optometrists recommends that when purchasing these products is found that, in the instructions for use clearly stated graduation. Also, the glasses must carry the CE sign on the product, both in the container as in prospect.

Finally, when making a purchase, you have to avoid doing so through unauthorized distribution channels (such as Internet, bazaars, flea markets). It is best to choose a health optics under the supervision of an expert optometrist to facilitate and adapt the right product for the problems and needs of each patient with the highest quality assurance.

Source: National College of Optometrists Optical (ww.cnoo.es)