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Contact Lenses

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Biotrue Contacts

Aaseby Optometry in El Dorado Hills offers many options for contact lenses.

There are a number of reasons why you might prefer contact lenses to standard eyewear: a glasses-free look, hassle-free vision correction, wearing non-prescription sunwear and goggles, or the convenience of not having to worry about misplacing your glasses. If you have a high prescription or astigmatism, contact lenses may provide more enhanced vision correction than glasses. Today, you can even replace your bifocal glasses with bifocal contact lenses.

Doug Aaseby, O.D. can recommend the best contact lenses for you based on a complete eye examination and a review of your visual needs both at work and play. Since most people can wear more than one type of lens, it’s important to know what the choices are and the advantages and disadvantages to each.

Soft Lenses

These lenses are comfortable to wear and must be replaced monthly, weekly or daily depending on the type you choose. Soft lenses are often recommended for sports because they fit closer to the eye and are more difficult to dislodge. They can provide correction for most prescriptions including astigmatism. Today, with the introduction of newer materials like silicone hydrogels, which allow more oxygen to the eye, patients find it easier than ever to wear soft lenses comfortably.

Gas-Permeable (GP) Lenses

Made of moderately flexible plastics, GP lenses offer sharp vision and correct most vision problems. They are more durable than soft contact lenses and can be easier to handle and care for but require a longer adaptation period and consistent wear to maintain adaptation.

Multifocal Lenses

In both soft and GP designs, multifocal lenses offer patients both distance and near vision correction just like a pair of bifocal glasses.

Color Contact Lenses

Enhance your eye color or even change it completely. Colored contact lenses are fun and come in a variety of colors for both light and dark eyes.

Silicone Hydrogels

Silicone hydrogels are soft contact lenses that have high oxygen permeability and are comparable to GP lenses.


One of the most exciting areas of research in Orthokeratology has to do with the control of myopic progression. At the present time it appears very likely that Ortho-K can practically stop the progression of myopia in the young adults and children.

Ortho-K is a non-surgical process which reshapes (flattens) the cornea of the eye using contact lenses to reduce refractive errors (nearsightedness and astigmatism). Accelerated Ortho-K uses reverse geometry contact lenses. Flattening the cornea reduces the focusing power of the eye. Since the amount of corneal flattening can be accurately controlled, it is possible to bring the eye into correct focus and compensate for the refractive error. After the contact lens is removed, the cornea retains its flattened shape for part or all of the remainder of the day. A retainer lens must be used each day to maintain the corneal flattening, or the myopia will revert to the pre-treatment level. Ortho-K is also successful for some degrees of farsightness by steepening the central cornea.

The procedure was first used over 40 years ago when eye doctors noticed that some contact lens wearers’ vision improved after wearing their lenses. It has been reported in Chinese history that sand bags were placed on the eyes at night in an effort to prevent myopia though this was more likely to cause glaucoma. Initially, only old-fashioned, hard contact lens material (PMMA) was used. A series of lenses were needed, each lens flattening the cornea a small amount until the desired results were attained. This took months to years to accomplish.

How Wave Lenses Are Designed for Your Eye

Regardless of the type of contact lenses you wear, an annual eye exam is recommended to ensure the continued good health of your eyes. Schedule an appointment for an assessment and advice at Aaseby Optometry in El Dorado Hills, and we will be in touch with you shortly.

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