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Different types of contact lenses

People prefer contact lenses because they give a natural look. Contact lenses are placed on the eyes, and they move with the eyes. They provide a natural feel, improve peripheral and central vision and provide a wider field of view as they conform to the curvature of the eyes. They do not fog up like glasses and don’t get splattered by rain. Somofilcon A is used to make disposable lenses like Clariti contact lenses. These contact lenses keep the eyes healthy and offer the best comfort to the wearer. Contact lenses are an excellent choice for people with nearsightedness, farsightedness, and astigmatism. Lenses made using silicone hydrogels are breathable and allow more oxygen to pass through and reach the cornea.

Different kinds of contact lenses

Gas permeable lenses: Gas permeable lenses, known as GP or RGP lenses, are rigid, maintain their shape on the eye, and are used to correct astigmatism and other refractive errors. They are made of highly oxygen permeable material and are smaller in diameter than soft lenses.

Soft lenses: Hydrogels, water-containing plastics are used to make soft lenses. They are thin and flexible and fit to the curvature of the eyes.

Silicone hydrogel lenses: It is a type of soft contact lens material that allows more oxygen to get to the eye.

Hybrid contact lenses: Hybrid lenses have a rigid gas permeable central zone surrounded by hydrogel material. It is comfortable like lenses made of silicone hydrogel and clear vision like GP lenses.

PMMA lenses: These are rigid contact lenses that look like gas permeable lenses but are made of plastic which doesn’t allow oxygen to pass through. The lenses are not prescribed today, and gas-permeable lenses have replaced them.

Contact lens designs

Spherical lenses: The lens power is the same throughout the entire area of the lens. It can correct nearsightedness and long sight.

Toric soft lenses: The lenses have different powers in different points of the lens. They are used to correct nearsightedness, farsightedness, and astigmatism.

Multifocal lenses: They have different power in different areas of the lens to correct short sight and long sight. They are used to correct nearsightedness, farsightedness, and presbyopia. Some multifocal lenses can rectify astigmatism.

Cosmetic lenses: They are color contact lenses that change the color of the eye. Cosmetic lenses need prescriptions even when a person has no defects that need to be corrected.

What are disposable lenses?

Replacing the lenses frequently reduces the induction of the cornea. Disposable lenses should be worn for a specific time and then discarded. Daily wear disposable lenses are like conventional lenses, and they need to be removed and cleaned daily. Monthly disposable lenses are disposed of after wearing them for a month. Extended-wear disposable lenses are worn during the day and night for a week and then discarded.

Daily disposable lenses are single-use contact lenses, and users dispose of them after a day’s wear. Daily contact lenses are not the same as daily wear disposable lenses, which allow the user to wear them for more than one day. Daily disposable lenses have less risk of contamination because the user wears fresh contact lenses every day.

Somofilcon A is used to make disposable lenses like Clariti contact lenses. It is a silicone hydrogel with 56% water content. It keeps the eye lubricated and has high oxygen permeability to keep the eyes healthy. Contact lens is a boon for people who prefer to look more attractive by not wearing glasses. They give excellent focus, clearer vision, and comfort at all times.

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