Proudly celebrating 30 years of "defining your style". At Optical Gallery, we are committed to providing our valued customers with high quality products and the best professional eye care service in the optical industry. We offer a great selection of innovative lens technologies to suit your particular needs.
Diagnosis for the need of single vision or multi-focal lenses is made by first undergoing a comprehensive eye examination.
Single Vision Lenses
Single vision lenses are prescribed to correct one field of vision being either distance, near or intermediate. Single vision lenses are generally dispensed in CR-39 plastic.
With a higher refraction index, high-index lenses offer better vision if you have been prescribed strong single vision or multi-focal lenses. Having thinner edges and a lighter overall weight, they are more comfortable and look more attractive.
The upper part of a bi-focal lens helps with distance vision correction. The lower part helps correct near vision.
The half-moon shaped segment line divides the two parts.
Tri-focal lenses are quite similar to bi-focal lenses. The difference between the two is that in tri-focal lenses, there is a third part in the middle that offers intermediate focus correction to view objects at an arm's distance. The three parts are divided by 2 segment lines.
Progressive lenses enable an easy changeover from distance to near vision correction. Also called invisible multi-focal lenses, these lenses do not require segment lines, because of which they can ensure clearer near, intermediate and far vision. Presbyopia or short-armed syndrome is the condition in which the eye loses its capacity to alter focus to view objects that are close by. It is generally experienced around the age of 40, when the lens in the eye starts becoming less flexible, and develops with age. Progressive lenses are designed to correct presbyopia, and are also compatible with small frames and other styles.