Acuvue’s Contact Lenses For Astigmatism
Both children and adults can suffer from a common vision problem called an astigmatism. Near and farsightedness have no bearing on whether or not one will have an astigmatism – it can affect anyone. Glasses or contact lenses for astigmatism can be worn to correct the problem.
The cornea is supposed to be shaped like a sphere, however when an astigmatism is present, the shape is more like that of an oval. Most people with an astigmatism have it because it is hereditary. Rarely, astigmatism is caused by an eye injury that results in extreme scar tissue on the cornea, some eye surgeries, and the thinning of the cornea. Astigmatism produces vision that is slightly blurry. When it is not corrected, it may cause severe eye strain and headaches.
It is important to schedule regular annual eye exams because it can worsen over time, so it is necessary to keep a close watch and adjust prescriptions for glasses or contact lenses as needed. Both glasses and contact lenses are usually suitable corrections for an astigmatism. Sometimes, it is so severe that contact lenses cannot be used, however, that is not normally the case.
Historically, there were few options for contact lenses for astigmatism. Many individuals had to either wear glasses, or wear uncomfortable rigid gas permeable or hard lenses. The only other option was to endure the astigmatism and wear soft lenses, but suffer the consequences of headaches and worsening eye strain.
Within the last decade, Acuvue has developed two great types of contact lenses for astigmatism. Lenses that correct astigmatism are called toric lenses. Toric lenses are fabricated out of the same things as normal lenses, however the design is different. They have special features that make them perfect for patients with an astigmatism.
Acuvue Advance for Astigmatism is one option released by Acuvue in 2004. Specific features of these lenses include Hydraclear Technology and Accelerated Stabilization Design. Hydraclear Technology allows lenses to remain more moist, which keeps them more comfortable. Accelerated Stabilization Design is a characteristic that keeps the lens properly positioned on the eye. When the wearer moves the eye to look around, or blinks, the lens is designed to automatically realign itself into the correct place.
A newer option offered by Acuvue are the Oasys for astigmatism lenses. Like the Advance lenses, the Oasys lenses also feature Accelerated Stabilization Design. The lens is automatically properly repositioned should it move out of place. These lenses also feature the same Hydraclear technology. They can be worn continuously for six nights and seven days because they allow more oxygen to permeate the lens.
The costs associated with having an exam for astigmatism and needing contact lenses for astigmatism are greater than those for regular lens wearers. The eye exam is more costly because it takes the practitioner longer and requires additional precise measurements to be taken. The lenses themselves are also more expensive because they are more complex, however the convenience and correction they provide is worth it to many consumers.
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