Eyestrain or presbyopia. The difficulty seeing close objects clearly called presbyopia or farsightedness. Who is affected? From a certain age will all end up in developing presbyopia. What is the motive or the cause? Human beings throughout our evolution we were able to develop the capacity to increase or decrease the power of the internal lens of our eye "lens" with order to be able to focus and clearly distinguish the objects that we held with our hands. This change or increase in power can be quantified in about three diopters about an adult (+3 diopters). Once we reach a certain age we gradually lose this capacity when you start this process our physiological response is to remove objects with our hands until you can see them clearly. As correct presbyopia? To overcome this problem we use the lenses (glasses), the power of these should be equal to the loss of ability to focus our lens in diopters. For instance, if our single crystal can change its shape into 2 diopters need diopter glasses a 2 +1 = 3, in order to focus our vision with vivid clarity of nearby. Can be corrected with surgery? Yes, by laser surgery in the early years of their appearance or implanting lenses replacing the lens in our older ages. Surgical Solutions The patients with early or intermediate symptoms of presbyopia, up to two diopters, can opt for laser surgery VISTA PREMIUM COC that will allow forget the glasses. When presbyopia is full and reaches three diopters, the surgical option of choice is surgery with glasses. Both surgeries, lasers and lenses correct both the problems eyestrain refractive before the appearance of this, such as nearsightedness, farsightedness or astigmatism. We are currently the only private center of Murcia with three laser platforms, one specially designed for the treatment of eye fatigue. Results. By surgery or laser presbyopia lens is possible to read, drive or make and write on a mobile device, all without glasses. In short, it is dispensed glasses for the vast majority of the activities that we need a good vision both near and far. VISTA PREMIUM COC.