Reading glasses for men and women, they are also known as eyeglasses , sunglasses , eyeglasses , among others; they are optics formed by a pair of lenses that contain a frame that lays over the nose through an arch of rods that hold on top of the ears.
Since ancient times people have preferred to wear glasses to improve vision ; this time dating from the hieroglyphics of the 5th century before Christ, which had simple lenses of glass, under which fail to obtain a clearer vision.
Reading glasses for men and women adapt according to the condition of the pacient and the professional, could be either an ophtalmologist or an optometrist who will determine, according to the situation of the patient, the type of lense they would need. Within the sight incapacities we can find that the most common ones are: myopia, astigmatism and/or hyperopia. These incapacities can, in some cases, be from genetics but some appear with the age, for example presbyopia.It is noted that aside from reading glasses for men and women, if they don´t have optical correction they are not a hygienic benefit.The type of lenses used to help improve the vision and the quality of life will be prescripted after a medical study applied on a patient. For this exists the bifocal specs in which two lenses are combines with different prescriptions in one, these are suggested for patients with presbyopia. The lenses reffered allow a sight from short and long distances. Trifocal specs are adapted to visualize at an intermediate distance, these specs are already being disused since the bifocals are becoming preferred by the general public. In the Market exist a great variety of Reading glasses, the optics are in charge of showing the clients what comes to their interest, if they are for man, women or both. A great variety of lenses exist, from the simplest to the most sophisticated, this depends on the economical capacity of the client to acquaire them. For example, a person from low class wouldn’t have the capacity to afford bifocals with antiglare and a good frame because these are expensive.In other centuries, reading glasses for men and women, were fabricated in glass, nevertheless, today optics use different material which are lighter and more resistant, such are the organic polymers and polycarbonate. Some are:
- Mineral crystal (crown): these glasses are harder and more resistant to scratches, they are heavier and have a low resistance to impact. Of these there are different lenses with different index of variation depending on the thickness of the frame or from the center, the usual indexes are 1.53, 1.6, 1.7, 1.8 and 1.9
- Organic material: it´s about a plastic polymer. The glasses made with this material are more flexible and resistant than the ones made with mineral crystal and its weight reduces a 50%, although their resistance to scratches is lower. Although there are superficial treatments that allow longer life they perfect for children and sports. Just like the mineral crystals there are different indexes of variation, the most common in organic material are 1.5, 1.56, 1.6, 1.67, 1.7, 1.74 and 1.76
- Polycarbonate: these lenses are yet skinnier and lighter than the organics; to add to that their index of refraction is less, which makes them less dark, they are very resistant to impacts and are used more often in activities such as sports.
In general, in the reading glasses for men and women, men tend to be less demanding than women when choosing the type of frame that will take their, but over time the trend has therefore changed with the boom of the trend called ” metro sexual ” term used for those dealing, both men and women, for their physical appearance, this has led to equate women in their demands when choosing their lenses, to improve both their vision and their appearance.Thus it can be seen as both ladies as gentlemen seek for comfort to look great physically , because not only do they desire to improve the visual part , they also look to improve the aesthetics part ; however, it is advisable to use lenses with the correct formulas and not reading lenses from designer.