Contact Lens Exams

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At South Mall Optical & South Texas Optical, we strive to meet all of your eye and vision care needs. Corrective lens evaluations and prescription management are provided by our optometrist. After a comprehensive eye and vision evaluation, Dr. Eugene O. Alvarado & Dr. Brenda O. Alvarado, O.D. will discuss the variety of contact lens options with you to select the type that best fits your vision needs and lifestyle. If you suffer from dry eye, allergies, or recurring eye infections, speak with our staff to determine whether contact lenses are right for you.


Prior to prescribing contact lenses, Dr. Alvarado, O.D. determines what level of vision correction you require. Refractive error (commonly known as nearsightedness, farsightedness, or astigmatism depending on the error) is evaluated by measuring how the eyes focus when a series of different lenses are placed in front of them. An optometrist may use either a photometer or an automated instrument to take measurements.

To schedule an appointment for a vision evaluation with our optometrist, call South Mall Optical (210) 922-1163 or                        South Texas Optical (210)431-0808.

Corrective Lenses

After determining the level of refractive error, Dr. Alvarado,  works with you to determine whether contact lenses or glasses are best for your lifestyle. If you suffer from certain conditions, such as dry eye or allergies, glasses may be the most comfortable corrective solution. Contact lenses need to be changed daily, weekly, bi-weekly, or monthly, depending on what type of lens you select. Specialized contact lenses, such as bifocal contact lenses, are also available for patients with special eye conditions. Call us at (210)922-1163 if you are interested in learning if contact lenses are a good fit for you