June 9, 2011

Contact Lens Exams

Contact lenses are medical products regulated by the FDA. Just like medicine, contact lenses require a prescription and has an expiration date of one year from the date of your contact lens examination. This means that your eye doctor has to evaluate the health of your eyes and fit of your contacts every year in order to determine the optimal prescription for your eyes. Contact lens examinations are required on a yearly basis. These tests are done to make sure your eyes are healthy, that the lenses fit your eyes properly, and to ensure that you are seeing as clearly as possible. Content lens examinations are a separate service from a patient’s annual comprehensive eye exam. It can be easy for patients to overlook the technicalities, time, and evaluation involved when prescribing contacts.

Contact Lens from Monterey Park Optometry

Choosing the right contacts for you

For contact lens examination/fitting, a separate service fee is applied. These fees are determined by the type of lenses you are fit with:


    Soft Spherical
    Soft Toric
    Soft Multi-Focal
    RGP Spherical
    RGP Toric

In a contact lens examination, you may expect the following procedures:

Contact Lens Examination/Fitting
To begin, the front surface of your eye’s curvature is measured with an instrument called a keratometer. With the keratometer, your optometrist has a starting point for determining the proper curve and size for your contact lenses. With contact lenses that are too flat or too steep for the shape of your eyes, your contacts will feel very uncomfortable and/or can cause damage to your cornea. Your contact lens fitting may also include additional computerized measurements of your eyes that let your doctor see the curve of the entire front surface of your eyes. The keratometer measures only a small area of your eye at the apex of the cornea.

Slit Lamp Biomicroscope

Examining your eyes with a slit lamp

Tear Film/Corneal Health Analysis
Your personal contact lens fitting will include an evaluation of the tear film on the front of your eyes. The tear film is a smooth surface for light to pass through the eye, nourishes the front of the eye, and provides protection from injury and infection. Your optometrist will also carefully evaluate the health of the cornea with an instrument called a biomicroscope (also called a slit lamp). This is to ensure that there are no other problems that could make wearing contact lens a painful experience. It also gives your doctor a baseline from which he can monitor any changes to your eyes from wearing contact lens.


Next, trial lenses may be applied to your eyes and evaluated with the biomicroscope to judge the fit of the lenses and how much they move with each blink. This step is also done at each follow-up visit in the contact lens fitting process. Sometimes, lenses that appear to fit fine when first applied can tighten up after several hours of wear. Examining the fit of your lenses several times is essential to ensure your lenses continue to fit properly and cause no adverse effects to the cornea.

After you have consulted with your optometrist and know that your contact lenses fit you the way that it should, by providing vision and comfort, is when your final contact lens prescription will be written. The prescription includes contact lens power, contact lens base curve, and diameter.

Here at MPO Eyecare, we provide the following services to ensure you are getting the best contact lens care after your contact lens examination:

Follow Up Visits and Replacement Contact Lenses
After your contact lens exam/fitting is complete, we recommend a follow up visit to determine that the contacts meet your level of comfort and how well you see. Patients may find that one brand may have a more comfortable fit over another contact lens brand. For some patients, (more common for astigmatic patients) it may require a few follow up visits to ensure the right contact lens fits.

Contact Lens Starter Solution Kit
MPO’s staff will provide you with the diagnostic contact lenses recommended by Dr. Lam along with an instruction guide on how to wear contact lenses.

Contact Lens Training by MPO

Professional Contact Lens Training

One on One Training with Professionals
Training is vital to becoming a successful contact lens wearer. You will be given proper instructions by Dr. Lam or a professional staff to assist you with your contact lenses.


Purchasing Contact Lenses
Our optical manager and friendly staff can place the order for your annual supply of contact lenses for you right here in our office. Patients have the option to come and pick it up or mailed directly to their homes for convenience.

Contact Lenses Rebates
Our helpful staff at MPO eyecare serving San Gabriel and Alhambra will inform you of current contact lenses rebates or current promotions that are being offered by the contact lenses manufacturer. We are more than happy to assist you with filling out any current rebates at our office.