Monthly lenses: comfort, materials, UV protection, top brands.
Monthly Contact Lenses
Contact lenses differ by the material from which they are made, by design, wearing (replacement) schedule, tinting, and purpose.
There are rigid and soft gas-permeable lenses. Soft contact lenses, in turn, are divided into high-water-content and low-water-content lenses, hydrogel and silicone-hydrogel lenses. By surface design, soft contact lenses can be spherical, toric, or multifocal. Spherical contact lenses are intended to correct myopia and hyperopia, toric lenses correct astigmatism, and multifocal lenses address presbyopia. By tint, contact lenses are classified as uncolored (clear) or colored. By purpose, contact lenses can be corrective (optical), therapeutic, cosmetic, or decorative (carnival, enhancing, colored). By replacement schedule, contact lenses are divided into daily, two-week, monthly, quarterly, semiannual, and annual lenses.
Choosing monthly contact lenses is optimal in terms of quality, hygiene, and price. Contact lenses can accumulate lipid, protein, and biological deposits on their surface. In addition, foreign odors and chemical substances are easily absorbed into the lens material. The relatively short wearing period of monthly contact lenses helps to avoid all of this. Moreover, monthly contact lenses offer a number of advantages over lenses with other replacement schedules. Monthly lenses from different manufacturers may differ in some characteristics.
Among the many varieties of contact lenses, the American company Ocular Sciences produces the monthly contact lenses Biomedics 55 UV, which are additionally equipped with an ultraviolet filter. The water content of these lenses reaches 55%, which helps supply oxygen well to the corneal cells. The production of Biomedics 55 UV contact lenses uses the latest technology, which allows the creation of lenses with a very thin edge (only 0.05 mm).
The British company CooperVision also produces high-quality monthly contact lenses. The silicone-hydrogel Biofinity contact lenses are manufactured using the high-precision Aquaform technology. This technology has made it possible to create lenses that provide a constant supply of oxygen to the eyes. With Biofinity contact lenses you can forget about problems associated with dryness and eye irritation. Another definite advantage is that Biofinity lenses are resistant to harmful deposits on the surface.
The monthly biocompatible Proclear 3 p contact lenses, also produced by CooperVision, are especially recommended for patients with dry eye syndrome. These lenses mimic the structure of the eye's natural tissue, and their surface is coated with phosphorylcholine — a component of the membranes of corneal cells of the human eye. The water content of Proclear 3 p contact lenses is 62%.