An astigmatism is a common vision problem that can occur in children and adults. It does not matter whether the patient is nearsighted or farsighted, or wears glasses or contact lenses, because astigmatism can affect anyone. Fortunately, astigmatism is easily corrected. A simple prescription for glasses or contact lenses for astigmatism will solve the problem.
Astigmatism is caused by an irregularity in the cornea. The cornea should be round, but it is more oval in shape when one has an astigmatism. Genetics is the most common cause of astigmatism. It is hereditary – it is not at all uncommon to have family members who also have an astigmatism. Another source is injury to the eye that causes the cornea to have excessive scarring. Some eye surgeries and thinning of the cornea are also responsible for astigmatisms. An astigmatism causes vision to be a little bit blurred. When an astigmatism is not properly corrected, it can have a negative effect on the body, causing headaches and eye strain.
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.
Acuvue produces two fantastic types of lenses for contact wearers with an astigmatism. The type of lenses available for astigmatism are called toric lenses. These are lenses that are made from the same materials as other soft contact lenses, but the design is different. They are made to sit in one place on the eye without moving, providing clearer, more precise vision.
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.
Eye exams and lenses for astigmatism are usually significantly more expensive than regular lenses and exams. Additional measurements are needed, and they are very precise, which takes the doctor longer. The lenses are more costly as well due to the way they are manufactured, but for most people, it is worth the extra money to have contact lenses for astigmatism that really work.
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