Request an Appointment or 214-645-8300

Ophthalmology Clinic

at James W. Aston Ambulatory Care Center

5303 Harry Hines Blvd., 6th Floor
Dallas, Texas 75390 (Directions)

The Department of Ophthalmology at UT Southwestern Medical Center offers the most comprehensive ophthalmic care in Texas and is dedicated to preserving healthy eyesight and preventing blindness.

While some vision problems are easy to diagnose and treat, others are more complex because the disease can progress undetected before symptoms develop. You will find one-stop comprehensive eye care in all ophthalmic subspecialties, including:

Our Physicians are Dedicated

We excel in preserving healthy eyesight and preventing blindness by delivering comprehensive, coordinated eye care to patients whose vision is threatened by eye disease, systemic disease, or injury.

Ophthalmology Clinic Desks

Your Appointment

What to Bring

On the day of your appointment, please allow time for parking and patient sign-in. In addition, please bring the following items:

  • Current insurance card
  • Method of payment
  • List of all current medications and dosages (including over-the-counter medications, herbs, and vitamins)


To make the most of your time with the doctor, make a list of questions ahead of time and bring them with you to your appointment.

If This is Your First Appointment

If you are new to the clinic, you can expect your doctor and technician to perform a thorough history and visual exam lasting 1-2 hours. Your physician may request you undergo additional tests in the clinic, such as a visual field exam, which takes 20 to 30 minutes to perform.

We try to see patients as soon as possible and make an effort to never turn patients away. However, emergencies do occur that require the immediate attention of your physician and may cause a delay in the schedule. We appreciate your patience.

Canceling an Appointment

If you need to cancel your appointment, please notify the clinic at least 24 hours in advance so we can accommodate other patients waiting to schedule an appointment.

Ophthalmology Clinic Yu-Guang He


Comprehensive eye exams and prescriptions for glasses and contact lenses are completed by our optometrists. Refraction (the part of the eye exam that determines the need for glasses or contact lenses) is not covered by all insurance plans. Check with your insurance provider and please be aware that you may be charged for refraction if you do not have a vision plan.

To re-order contact lenses, contact Optometry directly at 214-645-2064.

Dilation and Driving

To accurately follow your entire visual pathway, your doctor may dilate your eyes. Your pupils will take between 20 to 30 minutes to dilate, during which time you may sit in the waiting or exam room. If you anticipate your exam will include dilation, you may want to arrange for someone to drive you to and from your appointment.

Ophthalmology is that rare specialty that combines the need for diagnostic acumen with the technical skill set of the surgeon, all while allowing the doctor to develop long-term relationships with patients who may need a lifetime of treatment, and to intervene decisively in other patients’ care with treatments to eradicate disease.

Preston Blomquist, M.D.

Optical Shop

Located on the 6th floor in the Aston Building, the Optical Shop offers a broad selection of frames (including those for sunglasses). Our opticians are trained to help you choose the best frame for your face shape. Contact us at 214-645-2023.

Medication Refills

It is very important that you do not run out of your medication. Be sure that you have sufficient refills to last until your next ophthalmology appointment. We are happy to provide you with a written prescription upon request.

If you run out of refills, please call your pharmacy and your pharmacist will fax a refill request to us. Please allow us 24 to 48 hours to process refill requests.