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534 Larkfield Center 707-578-2020 Optometry Appointments 707-578-4200

Contact Lenses

Contact Lenses Sonoma Eyeworks

Come in for a contact lens evaluation

Sonoma Eyeworks® is committed to your success as a contact lens wearer.  Our recommendations are individually tailored to each patient and are based on many factors including your eyeglass prescription, visual needs, overall health, and eye health.

What is a contact lens evaluation?

A contact lens evaluation is a separate part of the comprehensive eye examination and requires additional testing that people who do not wear contact lenses do not need to have.  Patients wearing contact lenses require more of the doctor’s time and expertise.

In order to prescribe contact lenses, an eye doctor must complete several additional tests:

1.    Evaluate the health of the eye paying close attention to the cornea, eyelids, and conjunctiva and how contact lens wear will affect the health of the eye.

2.    Determine the proper contact lens prescription based on each individual patient’s glasses prescription, vision needs, and corneal health and curvature.  A contact lens prescription is different and separate from an eyeglass prescription.

3.    Examine the contact lens on the eye to ensure proper alignment with the cornea and lids.

4.    Measure the vision with the contact lenses on the eye and make adjustments as indicated.

Contact lens examinations and fittings have different levels of difficulty; this depends on the types of contact lenses needed, the visual requirements of the patient and the health of the patient’s eyes.

Why is the contact lens evaluation separate from the comprehensive eye examination fee?

Most insurance companies require doctors to separate routine comprehensive eye examination fees from any services performed due to contact lenses.  More time and testing is required for a patient who wears contact lenses; therefore, most insurance companies treat contact lens services as an additional and separate evaluation.

What is a contact lens prescription?

Contact lenses are medical devices that can only be dispensed by a prescription.  Contact lens prescriptions may expire after one year (or sooner if the doctor determines a medical reason for a shorter expiration date).  They must be regarded with the same caution you would use for prescription drugs, which includes prescription expiration dates and follow up visits with your eye doctor.  Your contact lens prescription will include the power of your contact lenses, the type of contact lenses you wear, the shape of the contact lenses (curvature), and any other information determined by the doctor to be necessary for proper contact lens fit.

Your eyes go through gradual changes in size, shape and physiological requirements (such as oxygen) while wearing contact lenses.  These changes can affect the overall health of the cornea and need to be monitored at least every year.  The American and Californian Optometric Associations recommend yearly contact lens evaluations to protect the overall eye health.


Sonoma Eyeworks® participates with VSP and Original Medicare. To schedule an appointment, please call Sonoma Eyeworks® Optometry at (707) 578-4200, or stop by our location in Santa Rosa.