About DrVanDO

Da-Thuy Van, D.O. provides comprehensive eye care including LASIK for Houston and Galveston area patients, cataract surgery & lens implants, eyelid surgery, BOTOX® and gel fillers for wrinkles at The Eye Clinic of Texas. Dr. Van, a Board-Certified Ophthalmologist, received her Bachelor's Degree with Cum Laude Honors from the University of California-Santa Cruz and her Doctorate of Osteopathy from Ohio University College of Osteopathic Medicine, where she served as President of the Sigma Sigma Phi National Honors Society. Dr. Van completed her internship in Internal Medicine at Meridia South Pointe Hospital in Cleveland, Ohio and her Residency in ophthalmology at Doctor's Hospital, which is affiliated with Ohio State University in Columbus, Ohio. She served as Chief Resident of Doctor's Hospital from 2000-2001. Dr. Van is a member of the American Academy of Ophthalmology, the American Osteopathic Association, the American Osteopathic College of Ophthalmology and Otorhinolaryngology, the American Society of Cataract and Refractive Surgery and the Texas Medical Association. Besides general ophthalmology, Dr. Van also specializes in cataract and refractive surgery, glaucoma procedures, blepharoplasty, and other lid procedures and pediatric eye care. Dr. Van is fluent in Vietnamese.

Results from the Los Angeles Latino Eye Study (LALES) confirm that diabetes is a top risk factor for vision loss among Hispanics. LALES and other large studies have found that people who have diabetes are more likely to develop serious and potentially blinding diseases, including diabetic retinopathy, glaucoma, cataract and glaucoma. Hispanics are more likely to develop diabetes than other groups.

Preventing Vision Loss in Hispanics

Preventing diabetes or catching and treating it and any related eye diseases in their early stages would go a long way to improving Hispanics’ vision health. Hispanics are the fastest-growing group in the United States and thus it is important to have routine eye exams especially if you are diabetic and Hispanic. LALES researchers believe that is our Hispanic population receives thorough exams and care as needed,, the burden of vision loss in US Hispanics could be reduced.

If you are Hispanic and especially if you have diabetes, having regular eye exams is critical to reduce your risk of vision loss. Please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

About Childrens’ Tear Duct Problems

Normally, tears drain through tiny opening in corners of the upper and lower eyelids call “puncta,” then enter the nose through the nasolacrimal duct. Sometimes the nasolacrimal duct or tear duct can become blocked or obstructed making it impossible for the tears to drain normally. This can cause the eyes to run water or even produce a discharge. Often, the tears well up on the surface of the eye and overflow onto the eyelashes, eyelids, and down the cheek. This usually occurs within the first days or weeks of life. Sometimes, the eyelids can become red and swollen, even stuck together with yellowish-green discharge since the normal eyelid bacteria are not properly “flushed” down the obstructed system. Probably the most common cause of a tear duct obstruction in kids is a failure of the membrane at the end of the tear duct opening to open fully at the time of birth. Generally we see this happening in some 5-10% of newborn infants where one or both eyes is affected with a tear duct obstruction-BUT some 90% clear without any treatment with the first 12 months after birth.

Treatment of Kids’ Tear Duct Obstruction

As most of the time the obstruction will clear on its own, we don’t always have to treat it. But, if it persists and causes the welling up of tears or the sticking or redness of the eyelids we can suggest a gentle massage as a first step and prescribe antibiotic eye drops if necessary. Sometimes we will need to do a tear duct probing to clear the blockage and in a some more difficult situations we might need to perform a tear duct dilation with a tiny balloon or even insert some microscopic tubes. We perform these types of treatments as a matter of routine and, as a parent I will make sure to thoroughly explain them and answer all of your questions if they become necessary.

If you or someone you know has questions or concerns about childrens tear duct problems or needs a kids eye exam, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

Dry Eye Help

Dry eye is a very common we hear about from patients almost each and every day. There are many causes of dry eye and we must first carefully examine patients to find the cause and type of tear film deficiency in order to offer help for dry eyes. The good news is that there are many helpful treatment options we can prescribe. One of the most helpful and convenient ways we can help dry eye is by inserting tiny microscopic “plugs” into the tear ducts where your tears would normally drain. These tear ducts are located in the nasal area of your eyelids and are easily visible to us during your eye exam and dry eye consultation using a slit lamp in the examination room. The opening to the tear ducts is called a “puncta” and the tiny plugs are called “punctal plugs.”  Researchers reporting in the American Journal of Ophthalmology confirmed the benefits of punctal plus with little risk of complications. Punctal plugs are a convenient treatment we can prescribe when necessary to help you with the symptoms and problems of dry eyes.

If you or someone you know has a question about dry eyes or needs help for dry eye problems or symptoms, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

About Medications and Eye Problems

Did you know that a number of medications for various health problems can cause eye problems? If you get any new prescription filled you should be aware of whether it can have any eye or vision side effects by itself or in combination with other medications-prescribed, or even over the counter (OTC) or even supplements you might purchase. Medications can have a variety of effects on your eyes, ranging from minor, temporary issues such as blurred vision to permanent damage. Here are some things to know about medications and your eyes.

Which Drugs Pose the Most Risk?

Some medications that stand out when it comes to causing eye and vision problems include: Corticosteroids-People take steroids for a range of conditions, from asthma and allergies to arthritis and skin conditions. But whether in cream or pill form, steroids can cause swelling in the back of the eye or retina and potentially even lead to cataracts. Even an over the counter spray for allergies such as Flonase® comes with risks

Antihistamines-They may fight allergies, but they also can raise certain patients’ risk for glaucoma. Even over the counter antihistamines can be trouble for those who are at risk for some types of glaucoma.

Mental Health Medications-Medications such as Thorazine and Mellaril, used as antipsychotic treatments, can be toxic to your retina. A number of antidepressants such as Prozac, Paxil, Celexa and Tofranil may put certain individuals at risk for angle closure glaucoma.

Anti-Malaria & Anti-Arthritic Medications-Medications such as Chloroquine, under the brand name Plaquenil, which is used to treat malaria but also Lupus and some forms of arthritis can have toxic effects on the retina.

What to Watch For with New Medications

If you get a new prescription or even start a new OTC medication, be aware of anything that causes pain to the eyes, or distorted or blurred vision. If you do experience a problem, talk to the doctor who prescribed the medication. Don’t stop the medication without your doctor’s advice. They’ll want to assess whether the medication is the likely culprit-and sometimes the benefits outweigh the side effects. Always read the warning labels, too- especially if you have a condition such as glaucoma or diabetes. A variety of medications have warnings that patients with glaucoma shouldn’t take them.

There are many other drugs that can have eye side effects and may increase your risk of complications if you need eye surgery. During your eye exam, be sure to ALWAYS tell us if you are taking ANY medications whether prescribed or purchased over the counter (OTC) as well as any supplements of vitamins you are taking. Also, if you or someone you know is taking any medication with known side effects as listed above, or is at risk for glaucoma or has diabetes, it is important to schedule a routine eye exam. Please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

About Huntington’s Disease

We now know that certain eye tests may help serve as “biomarkers” for the progression of Huntington’s Disease as well as help understand whether some of the new medications prescribed might be helping to slow its progress. Huntington’s Disease is an inherited disease that causes the progressive breakdown and degeneration of nerve cells in the brain. Huntington’s disease has a broad impact on a person’s functional abilities and usually results in movement, thinking and psychiatric disorders. Most people with Huntington’s Disease develop signs and symptoms in their 30s or 40s, but the onset of disease may be earlier or later in life. Medications are available to help manage the symptoms of Huntington’s Disease, but treatments can’t prevent the physical, mental and behavioral decline associated with the condition.

Eye Problems with Huntington’s Disease

One of the earliest and most recognizable eye problems of Huntington’s Disease is a change in eye movements or “saccades” where there is a lag initiating an eye movement to look at something and/or an involuntary reflex saccadic movement that the person can’t control. This loss of eye movement control is quite common. Recent research using Optical Coherence Tomography (OCT) testing that we do right in our offices allows us to study the health of the retinal nerve fiber layer and the health of the nerve fibers around the center of vision, called the macula. What we know is the thinning of the nerve fiber layer on OCT, along with a loss of the macular volume is an indicator of the progression of the disease and can serve to monitor that progression.

Please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

Eye Injury in Children

Eye injury remains the leading cause of monocular blindness in children, despite the fact that 90% of injuries are potentially preventable.  Children playing with pets require supervision and education on how to treat pets. Children interact with animals in a variety of situations, and the associated dangers may be underestimated by parents and those supervising children. Eye injuries in children from pets can often be serious and cause severe eye problems-but they too are preventable.  It is not uncommon for children’s dog bite injuries to include corneal abrasions, corneal and sclera lacerations or punctures of the eye itself, all of which at a minimum require aggressive treatment and in many instances repeated surgery. Further, animals are capable of causing damage to the delicate tissue of the eyelids and surrounding tissue that can be cosmetically and visually devastating-also requiring multiple surgeries.

Typically, when very small children-age 4 and younger-are bitten by dogs, eye injuries occur about 15% of the time. The dog is usually one the child is familiar with, and second attacks by the same dog are likely to cause more serious injury. It is recommended that any dog that bites a child be removed from the household. With caution, education and supervision pets and children can be quite compatible but does require some care.

 If you or someone you know would like to learn more about children’s eye injuries, especially from pets such as dogs, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

Treatment of Amblyopia

The best results are always achieved if the treatment of amblyopia is started as early as possible. If necessary, children with refractive errors such as nearsightedness, farsightedness or astigmatism can wear glasses or contact lenses when they are as young as one week old. Children with cataracts or other “amblyogenic” conditions need to be treated promptly in order to minimize the development of amblyopia. One of the most important treatments of amblyopia is correcting the refractive error with consistent use of glasses and/or contact lenses. Other mainstays of amblyopia treatment are to enable as clear an image as possible, for example, by removing a cataract, and forcing the child to use the non dominant eye by patching or blurring the better seeing eye with eye drops. Eye drops are used to “penalize” the good eye and force  the use of the weaker or amblyopic eye. We may be able to use eye drops instead of patching when the amblyopia is not very bad or when a child is unable to wear the patch as recommended. For mild to moderate degrees of amblyopia, studies have shown that patching or eye drops may be just about equally effective.  Generally, we start to see improvements in vision within weeks of treatment however for optimal results it will be necessary to be patient for many months.

In some cases, treatment for amblyopia isn’t successful and it is difficult to stop treatment but is recommended when there is any real benefit. Children who have amblyopia in one eye and good vision only in their other eye can wear safety glasses and sports goggles to protect the normal eye from injury. As long as the good eye stays healthy, these kids function normally in most aspects of society.

If you or someone you know has questions or concerns about the treatment of amblyopia or needs a kids eye exam, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

About Retinitis Pigmentosa

Retinitis pigmentosa (RP) is a progressive inherited disease of the eye, in which the light-sensitive photoreceptor cells located in the retina degenerate. This results first in the loss of night and peripheral vision, eventually progressing to the loss of central vision and total blindness. It is the leading cause of inherited blindness in the developed world.

The disease, which affects approximately 1.5 million people in the world, has no cure, but thanks to  research done at the University of California-Santa Barbara, a new stem cell therapy may soon be available that protects photoreceptor cells from the damaging effects of the gene mutation. So far, only a small number of legally blind patients with RP have begun a trial. The trial is the first attempt to use stem cells to prevent the loss of vision from RP. An experimental injection of retinal stem cells is placed in the eye with the hope that the growth factors from these cells will protect the retinal cells and prevent them from dying, thus preserving the patient’s remaining vision.

If you, a family member or someone you know would like to learn more about Retinitis Pigmentosa or many new stem therapies being developed for diseases of the retina, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

About Multiple Sclerosis

Multiple sclerosis (MS) is a debilitating neurological disease that can cause patients to experience decreased vision due to optic neuritis, an inflammation of the optic nerve, as well as diplopia or double vision. We believe that MS occurs because there is an abnormal response of the body’s immune system whereby it is directed against the central nervous system (CNS), which is made up of the brain, spinal cord and optic nerves. Within the CNS, the immune system attacks myelin-the fatty substance that surrounds and insulates the nerve fibers as well as the nerve fibers themselves. When any part of the myelin sheath or nerve fiber is damaged or destroyed, nerve impulses traveling to and from the brain and spinal cord are distorted or interrupted, producing a wide variety of symptoms. 

About Optical Coherence (OCT) Eye Testing for MS

In our office, we routinely use very precise imaging technology called Optical Coherence Tomography (OCT) as part of evaluation, diagnosis and monitoring glaucoma and retina diseases because it allows us to examine the actual nerve fibers of the retina and the optic nerve.

Recent research has taught us that OCT can be used to monitor the degree of atrophy of specific retinal layers-called the “inner plexiform layer” and “ganglion cell layer”-and used as an as an indicator of neuronal tissue damage in patients with multiple sclerosis (MS). For patients with Multiple Sclerosis this is quite valuable as it gives us a non invasive in office test, that in concert with their neurologists, helps us help patients asses the stability of their disease as well as their response to new medications or treatments.

If you or someone you know has been diagnosed with MS or has questions about the eye problems that can be associated with Multiple Sclerosis, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.

Lazy Eye Amblyopia: What is it?

Amblyopia or “lazy eye” is a very common vision problem that we see in children. In fact it is responsible for more vision loss in kids than all other reasons combined. Amblyopia is a decrease in the child’s vision that occurs even without any structural problem being present. The decrease in vision results when one or both eyes send a blurry image to the brain. The brain then “learns” to only see blurry with that eye, even when glasses are used. Only children can get amblyopia. If it is not treated, it can cause permanent loss of vision. There are a number of types of amblyopia including strabismic amblyopia which is caused by an eye alignment or eye turning problem, deprivation amblyopia which is caused by cataracts or other condition that “deprives” the eye of a visual image and refractive amblyopia which is due to an uncorrected refractive error such as farsightedness or astigmatism.

Depending on the cause of the amblyopia and whether there is an underlying uncorrected refractive error sometime glasses can help but will not correct the vision to 20/20.  With amblyopia, the brain is “used to” seeing a blurry image and it cannot interpret the clear image that the glasses produce. With time, however, the brain may “re-learn” how to see and the vision may increase. Remember, glasses alone do not increase the vision all the way to 20/20, as the brain is used to seeing blurry with that eye.  Because of this most of the time the normal eye is treated with patching or eye drops to force the amblyopic eye to be used and make it “stronger.” to make the amblyopic (weak) eye stronger.

If you or someone you know wishes to learn about “lazy eye” or amblyopia or has questions or concerns about amblyopia or needs a kids eye exam, please call The Eye Clinic of Texas, an affiliate of Houston Eye Associates, at 800-423-3937, visit The Eye Clinic of Texas, Google+  or facebook.com/ecot.lasik.

The Eye Clinic of Texas is an affiliate of Houston Eye Associates, the largest ophthalmology clinic in the nation. We are a leading eye care practice serving the greater Houston, Galveston, League City and Texas City with offices at 1100 Gulf Freeway, Suite 114, League City, Texas 77573, 7111 Medical Center Drive, Suite 110, Texas City, Texas 77590 and 2302 Avenue P, Galveston, Texas.