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Many patients with vision problems heartily embrace the idea of enjoying vision correction without having to wear eyeglasses or contact lenses. Not all of these patients, however, are good candidates for PRK or Lasik surgery, the two standard surgeries used to alter the way the cornea of the eye refracts light. If that describes you, don't fret -- because here at River Oaks Vision, we offer an advanced corneal reshaping technique known as orthokeratology, or Ortho-K. This non-surgical technique can produce changes to the way your cornea refracts light.

To understand the benefits of Ortho-K, let us first consider how the cornea works. The cornea is a transparent, spherical bulge that sits over the lens of your eye. In addition to protecting the inner parts of the eye, the cornea also performs some lens-like tasks of its own. The shape of cornea causes incoming light rays to be refracted, or bent, in such a way that the lens can focus them into a clear, sharp image before they pass on to the retina and optic nerve. Ultimately, the optic nerve transmits the image to your brain.

Deformations in the shape of the cornea cause refraction to go wrong in various ways, producing the fuzzy images characteristic of nearsightedness, farsightedness, and astigmatism. Glasses and contact lens are curved to "pre-refract" incoming light to compensate for your personal degree of corneal deformation. Laser surgery actually corrects the shape of cornea itself, eliminating most of all of the visual errors that might otherwise call for corrective lenses.

Corneal Reshaping While You Sleep

While you might leap at the thought of permanently correcting vision problems, laser surgery isn't always the best eye care option. For instance, if you suffer from thin corneas, untreated cataracts, diabetes, certain autoimmune diseases, or a corneal disease called keratoconus, you should avoid laser eye surgery.

Some of our patients simply don't like the idea of any kind of surgery, or they want a reversible procedure. Orthokeratology may be an ideal choice for these individuals. Dr. Wallace will map the shape of your corneas precisely and then fabricate special contact lenses. Unlike standard contacts, you'll wear these lenses at night. The lenses perform a subtle corneal reshaping as you sleep, meaning that you can take them out the next morning and enjoy perfect or near-perfect vision.

Ortho-K can help you see clearly for one or two days at a time, or possibly even longer. By wearing them regularly at night, you can maintain your clarity of vision for as long as you decide to continue using them. If you decide to use another form of vision correction, simply stop wearing the Ortho-K lenses and your corneas will assume their previous shape once again. Talk to our knowledgeable staff to see whether Ortho-K makes sense for you.

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Dr. Tihomira Petkova

Dr. Tihomira Petkova is a therapeutic optometrist and optometric glaucoma specialist practicing in Humble, Texas

Dr.PetkovaDr. Tihomira Petkova received her Doctor of Optometry and Doctor of Philosophy degrees from the University of Houston College of Optometry in 2012. She gained extensive experience in the diagnoses and treatment of ocular diseases during her externships and practice at the University Eye Institute, Good Neighbor Clinic and La Nueva Casa de Amigos Health Center and practicing at TSO. Dr. Petkova is certified by the National Board of Examiners in Optometry and the Texas state Optometry Board. As a therapeutic optometrist she is actively involved with the management of dry eyes, ocular infections and allergies. She is also an optometric glaucoma specialist who has gained most of her clinical experience in Houston while diagnosing and managing diabetic retinopathy, glaucoma, and age related macular degeneration. She also co- manages LASIK and Cataract surgery patients with local ophthalmologists.
As a scientist Dr. Petkova seeks to understand the molecular mechanisms involved in retinal development and optic nerve regeneration and has completed post-doctoral fellowships at Weill Cornell Medical College and Baylor Medical College. She has presented her work at multiple international research conferences and is a published author of research articles and a book chapter. For her contributions to vision research Dr. Petkova has received multiple rewards amongst which most notably are the American Optometric Foundation Ezel Fellowship and Fight for Sight Foundation Fellowship.
Dr. Petkova’s primary focus in patient care is is always clear communication with each patient and providing comprehensive eye care to patients of all ages.
Dr. Petkova lives in Houston with her husband and daughter she is an avid cyclist, an amateur artesian bread baker and a supporter of the Houston Grand Opera and the Houston Symphony. She is fluent in Bulgarian, proficient in Russian and has knowledge of medical Spanish.

Dr. Crosby Wallace  received his Bachelor of Science in Medical Technology from The University of Texas, Masters Degree in Public Health from The University Of Texas and also received his Doctor of Optometry degree from the University of Houston College of Optometry. Dr Wallace is licensed as an Optometrist / Glaucoma Specialist by the Texas Board Of Optometry. 

Dr Wallace was an Optometry intern the United States Navy where he received a letter of Commendation for outstanding performance of duty from the Commanding Officer, Naval Medical Clinic. 


"You consistently demonstrated outstanding clinical skills and knowledge as assisted in the care and treatment of military beneficiaries. Your devotion to your profession and your patients was demonstrated through numerous patient expressions of satisfaction with the thoroughness and quality of care you rendered. It gives me great pleasure to extend my sincere appreciation for a job "well done" and wish you continued success in all your future endeavors". - R L Finke, Captain, Medical Service Corps, United States Navy

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New patients receive 15% OFF sunglasses.

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DayOpenClosed
Monday9:00 am6:00 pm
Tuesday9:00 am6:00 pm
Wednesday9:00 am6:00 pm
Thursday9:00 am6:00 pm
Friday9:00 am6:00 pm
Saturday9:00 am3:00 pm
SundayClosedClosed
Day Open Closed
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9:00 am 9:00 am 9:00 am 9:00 am 9:00 am 9:00 am Closed
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Testimonial

Dr. Wallace was very attentive and answered all of my questions and concerns. He even was able to convince me into new bi-focal contacts, which are great.

Kevin W.
Houston, TX

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