Types of Contact Lenses
Contact lenses to Get Clear Vision
Contact Lenses are considered as medical devices which can be worn to correct the vision and it can be for any reason whether for cosmetic or therapeutic reasons. There are various renowned companies which are indulged in offering high-quality lenses to its potential customers. These types of lenses are designed with latest technology features which make them easy to wear for an individual. Contact lenses can be easily classified in several different manners. Contact lenses can be easily alienated by their main function, material, wear schedule and many others. Corrective contact lenses are one of the major functions of these Contact lenses which are purely designed to improve vision. The most common feature of these lenses is to correct refractive error.
Branded contact lenses in India
It is important to buy contact lenses from reputed brands which are indulged in offering highly advanced lenses made up of optimum quality features. Branded contact lenses in India offered by numerous renowned brands such as Bausch & Lomb, Johnson & Johnson Lens, Acme Lens, Copper vision Lens, Magic Look Lenses, Polylite, Igel UV Blue, Biomedics Lenses, Style, Ey-art, Aryan Color Lenses, Calaview Color Lenses, Natural Color Lenses Celebration Lenses, Freshkon, Glamour Eye and many others. To get high-class lenses, you can buy contact lenses online where one can get some of the best deals which will save your precious time and money.
Best contact lenses online
People who are busy in their professional life can buy contact lenses online where one can get huge discounts on each purchase. Here, you can get some of the branded contact lenses and you can easily get best prices for contact lenses. Potential buyers can get high-quality contact lenses at best price which will save your precious time and money. These renowned brands offer branded contact lenses at varied price rates which are considered as economical as compared to the actual market price.
Contact lenses at best price
Contact lenses are considered as soft lens which are used in the treatment and management of non-refractive disorders. You can search for high-quality contact lenses which are available online that makes your entire shopping more convenient and economical in price as compared to the actual market price. Here at Lenskart.com, you can easily get huge discounts on branded contact lenses and get best deals online.
Similar Types of Contact Lenses
- Contact Lenses Types
- Daily Disposable Contact Lenses
- Toric Contact Lenses
- Bifocal Contact Lenses
- Monthly Disposable Contact Lenses
- Coloured Contact Lenses
- Yearly Conventional Contact Lenses
- 2 Week Disposable Contact Lenses
- Day & Night Contact Lenses
Different Types of Contact Lenses
Contact lenses were initially made of glass in the late 19th century. Later, in the 20th century, plastic came to be used. Today, with more developments in technology, there is a wide range of materials in the contact lens market.
These materials, along with variations in design, serve different purposes. Some of the common types of contact lenses are spherical contact lenses, toric contact lenses, conventional contacts, multifocal eye-lenses, bifocal contact lenses, rigid gas permeable contact lenses, soft contact lenses and hard contact lenses.
Multifocal and bifocal contact lenses have two kinds of designs - simultaneous vision and alternating vision lenses. Further, simultaneous vision contact lenses have two designs - concentric contacts and aspheric contact lenses.
Aspheric contact lenses are multifocal lenses. The powers for near and distant vision are spread across the surface of the lens. The power in this design of contact lens changes gradually from near vision to distant vision and vice versa.
Regular contact lenses are spherical in shape while aspheric contacts have curves that vary through the surface of the lenses. Aspheric contact lenses help correct spherical aberration and astigmatism. Spherical aberration is a distortion of light that results from the spherical shape of a lens. So the non-spherical shape of an aspheric contact lens helps diminish the distorted vision problem.
Based on Usage Duration: Daily Wear and Extended Wear
There are different types of aspheric contact lenses, available as daily wear and extended wear contacts. Daily wear contacts should only be used during waking hours and must be cleaned every day to prevent eye infection. Extended wear contacts can be worn for a week before they are cleaned.
Based on Monthly and Yearly Use...
Aspheric contacts are available as monthly disposable contact lenses. Monthly disposable aspheric contact lenses are made by several manufacturers including Biomedic, CooperVision and Johnson & Johnson among others. Yearly disposable contacts can be worn for 12 months, but they have to be cleaned regularly to avoid risk of eye infections.
Toric Contact Lenses
Toric contacts lenses are designed for people who have astigmatism. Toric contacts have two different powers along the horizontal and vertical positions of each lens. Toric contact lenses are generally made of soft material with silicone hydrogel or regular hydrogel, but certain toric contacts are made using gas permeable lenses.
Orthokeratology or Ortho-K is a process that is used to temporarily correct myopia by the reshaping the cornea. For this process, some specially designed rigid gas permeable lenses are used. Rigid gas permeable contact lenses are also known as gas permeable contacts and, unlike soft contact lenses, they are made of strong plastic and they do not contain water.
Ortho-K is a corneal refractive therapy (CRT) and patients suffering from myopia have to wear the gas permeable contacts while sleeping. They can be removed in the morning. This helps one get clear vision during the day without the need for corrective lenses. Orthokeratology is a recommended therapy for children who are 8-12 years old and have myopia. Ortho-K lenses are also helpful for adults with mild astigmatism and presbyopia.
Types of Power and Non-Power Lenses
Spherical, toric, multifocal and bifocal contact lenses are available in different powers that are used for correcting vision for myopia, hyperopia, astigmatism and presbyopia among others. Toric contact lenses are measured in cylindrical (CYL) power and spherical lenses are measured in negative or positive spherical power (SPH). Apart from zero-power coloured contacts, one can also easily find powered coloured contact lenses.
UV Protection Lenses and Other Types of Lenses
Ultraviolet (UV) radiation can cause cataracts in the eye. UV protection contact lenses are necessary for those who spend long hours outdoors. For better eye protection, one can pair UV protection contact lenses with sunglasses, which can help block the harmful UV rays from the sides of the sunglasses. Several brands such as Johnson & Johnson and Aqualens manufacture UV blocking contact lenses.
Monovision contact lenses are another type. Monovision contacts have different powers for each eye; one lens is used for vision correction in the distance and the other is used for correcting vision for things nearby. There are other types of contact lenses that differ according to the materials used for manufacturing them. Some of them are hybrid contact lenses and polymethyl methacrylate (PMMA) contacts.