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Posts tagged ‘contact lenses’

Oxygen Permeability of Silicon Hydrogel Contact Lenses

Silicon Hydrogel Contact Lenses   The cornea is the transparent part of the eye that covers the pupil and the iris.  It is a unique part of the human body in that it does not receive its supply of life-giving oxygen from arteries carrying oxygen-enriched blood. Rather, the cornea receives its supply of oxygen directly from the air.

It’s imperative the cornea receive a sufficient amount of daily oxygen to stay healthy. Equally important is the removal of carbon dioxide from the cornea. Unlike other parts of the body where the bloodstream carries away carbon dioxide waste, the carbon dioxide from the cornea is simply diffused into the air.

A contact lens covering the cornea will inhibit the supply of oxygen the cornea receives. If a conventional contact lens remains in the eye for extended periods of time, it will deprive the cornea of sufficient amounts of oxygen and may lead to problems. That’s one of the reasons why it’s so important to remove conventional contact lenses from the eyes daily.


If the oxygen supply to the cornea is significantly reduced by something like a contact lens, it’s a condition called hypoxia. Hypoxia can lead to a number of eye problems including eye discomfort, blurred vision, red eyes, corneal swelling and eye infections.

Silicone Hydrogel Contact Lenses

contact lensesSilicone hydrogel contact lenses are an alternative to conventional contact lenses. These types of contact lenses allow increased amounts of oxygen to pass through the lens and reach the cornea. In fact, silicone hydrogel contact lenses allow up to five times more oxygen to reach the cornea than conventional contact lenses. This ability gives a person wearing silicone hydrogel contact lenses with more options in terms of how long lenses can stay in the eyes and they are generally more comfortable.

Silicone Hydrogel Contact Lenses for Special Types of Eye Conditions  

The increased oxygen permeability of silicone hydrogel contact lenses also makes them a great fit for contact lens designs for special types of eye conditions including:

  • Toric contact lenses for astigmatism.
  • Bifocal contact lenses.

 Talk to Your Eye Doctor about Silicone Hydrogel Contact Lenses

If you are a contact lens wearer or would like to utilize contact lenses for your vision correction needs, discuss silicone hydrogel contact lenses with your eye doctor. He or she will be able to tell you if they are a good fit for your lifestyle and your vision.

Learn more about quality eye care and eye wear from a company and a team of eye care professionals who have been providing a superior level of service for more than 35 years. Please visit

The Importance of Eye Care at Every Stage in Your Life

Vision problems are common and affect everyone from infants to senior citizens. Proper eye care and eye wear at every stage in life are very important in order to see clearly and prevent future eye health issues.

A problem with a child’s vision can be the underlying cause of learning difficulties in school. The process of learning is highly visual and is dependent on clear vision. Eye care for children begins at the start of life. A pediatrician should examine a new born infant’s eyes at birth. Eye examinations should also be performed when a child is 6 months old, 2 years old, then at least every two years after that unless more frequent examinations are required.

Teenagers are prone to ultraviolet rays from the sun and the harmful impact ultraviolet rays can have on eyes if protective eye wear such as sunglasses are not used. Research shows 80% of a person’s lifetime exposure to ultraviolet rays occurs by the age of 18. Extra-curricular school activities such as sports often times necessitate protective or corrective eye wear.  Clear vision helps teens participating in these programs perform at their best. Protective eye wear worn during these types of activities prevents eye injuries. Regular eye examinations during the teen years are essential to future eye health.

Corrected vision and healthy eyes are vital to adults. We all live very busy lives and need to take care of all aspects of our health, including eye health, in order to cope with stress and enjoy life to the fullest. While you may not notice any issues with your vision or overall eye health, a regular eye exam is still necessary to detect problems that may be emerging. If your family has a history of eye disease, diabetes and high blood pressure, regular eye exams must be conducted to monitor and identify whether or not these conditions are affecting you.

As we continue to age and reach the advanced stages of life, the risk of eye disease and eye problems increases dramatically.  Annual eye examinations are critical to maintaining vision and staying active during your senior years.

Developing a trusted relationship with an eye care professional is just as important as your relationship with a primary care physician.  At Shawnee Optical, we have been nurturing long-term relationships with patients for over 30 years. We get know our patients, their families and their lifestyles. This helps us understand their eye health history, their susceptibility to specific eye problems, their eye wear needs and enables us to deliver the very best eye care and level of service.  A relationship like this saves our patients both time and money.

To learn more about eye care and Shawnee Optical, please visit our website at

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