UV radiation endangers the integrity of the eyes:
UV protection of the glasses is not related to the color of the crystals. Some crystals with a very dark hue may lack any UV protection. In sunglasses without UV protection, the effect is doubly dangerous. Dark glasses serve to enter a smaller amount of light. This causes the pupils to dilate, so if the glasses do not have UV protection dilation of the pupils who will enter the eye a high amount of radiation. The damage can be permanent view.
Protection against glare depends exclusively on the glass tonality. How darker the glass is least amount of light that will happen. The rate of solar protection glasses is classified into five categories, from 0 to 4. The category 0 (these crystals absorb up to 20% of visible light) indicates the minimum protection, while category 4 (with light blocking 92% to 97%) indicates the maximum protection against glare. We recommend a universal filter category 2 (with a level of absorption between 57% and 82%) for the average level of solar radiation in Europe. On the beach or in the mountains is recommended glasses with a protection level 3 (absorption of 82% to 91%).
People with good vision should wear sunglasses in normal light to drive. It is recommended to drive with colored glasses that respect the natural color of things in order to easily recognize the signs and warning lights. The bright yellow enhance contrast in low light and are also suitable for night driving. Those suffering from refractive error, and therefore need regular glasses, they should also wear sunglasses while driving.
Sunlight is transmitted in space vibrating in many different planes. Sometimes, in some bounce on surfaces such as asphalt road, snow, etc.. focuses on a single plane, the horizontal, producing a glow that besides annoying distorts the true color of objects making them more difficult to perceive. Also on wet surfaces this phenomenon causes a mirror effect, making it difficult to distinguish the objects located under the surface of the water.
While a normal single lens reduces the light transmission decreasing intensity, the polarized lenses filter light rays reflected by the vision more comfortable, increasing the depth of the visual field and refine our perception of color enhancing contrast. With a polarized lens will achieve a much brighter, sharper and relaxed vision.
Federòptics Elisabet will offer you the services of optometrists and optician we’ll advise you of the most appropriate to your needs with personalized treatment.
In January 2005 we joined the FEDEROPTICOS, association of Opticians-Optometrists with proven experience and professionalism.
We offer also an audiometric examination completely free to determine your hearing quality. We have the latest technology AMPLIFON.
Since June 2006, we are one of the first optical in Catalonia to have AENOR (UNE 175001-3) service quality of a small businesses.