expert type icon EXPERT

Dr. Nancy Ann Tanchel, M.D.

Ophthalmologist

Dr. Nancy Tanchel is an ophthalmologist practicing in Vienna, VA. Dr. Tanchel specializes in eye and vision care. As an ophthalmologist, Dr. Tanchel can practice medicine as well as surgery. Opthalmologists can perform surgeries because they have their medical degrees along with at least eight years of additional training. Dr. Tanchel can diagnose and treat diseases, perform eye operations and prescribe eye glasses and contacts. Ophthalmologists can also specialize even further in a specific area of eye care.
35 years Experience
Dr. Nancy Ann Tanchel, M.D.
  • Vienna, VA
  • Emory University School Of Medicine
  • Accepting new patients

What is used to keep your eyes open during LASIK eye surgery?

A small, springy instrument called a lid speculum is used to keep your lids from blinking or closing. It doesn't hurt; you will feel pressure on your lids, but not pain. During READ MORE
A small, springy instrument called a lid speculum is used to keep your lids from blinking or closing. It doesn't hurt; you will feel pressure on your lids, but not pain. During the procedure, you will be asked to focus on a light above you, but small movements are normal, and will be automatically and rapidly tracked by the laser itself. Don't worry or stress yourself out - the procedure will be very fast and will not hurt. Within a very short time, you will notice a big improvement in your vision and will be very glad you had it done - you will wonder why you didn't do it sooner!

Nancy A. Tanchel, M.D.

Is lasik surgery a good option for those with an astigmatism?

LASIK is absolutely a great option for those with astigmatism. Your surgeon will review your eye maps and the exam findings and if your astigmatism is a regular astigmatism and READ MORE
LASIK is absolutely a great option for those with astigmatism. Your surgeon will review your eye maps and the exam findings and if your astigmatism is a regular astigmatism and your eyes are healthy, you will do great with a laser treatment. Frequently, laser vision correction will make your vision even better than glasses or contact lenses, since the correction is placed directly onto your eyes, so eye movement will not have any effect on your vision, as it can with glasses and contacts. You will really enjoy your vision without astigmatism, so definitely move forward and get the procedure - you will be really happy.

Could my dry eyes be due to excessive exposure to the computer screen?

Yes, excessive use of computer screens can cause dry eyes. Even though you don't consciously perceive it, the computer screens are flashing on and off at a very high rate. It READ MORE
Yes, excessive use of computer screens can cause dry eyes. Even though you don't consciously perceive it, the computer screens are flashing on and off at a very high rate. It is believed that your brain misinterprets this flash to assume your eyes blinked. Blinking is how we move tears over the eyes and keep the surface moisturized. As a consequence, your natural blinking rate is diminished, allowing your eyes to dry out.

My cylindrical number is changing every six months. What could be the cause for this?

It may be something simple, related to dry eyes or something else like eye rubbing. However, it also may be a sign of a weakness of the corneal tissue - a problem called keratoconus. READ MORE
It may be something simple, related to dry eyes or something else like eye rubbing. However, it also may be a sign of a weakness of the corneal tissue - a problem called keratoconus. Hopefully, it's not anything serious, however, you should see an ophthalmologist soon, to assess what is happening and get the appropriate treatment, so your vision stabilizes.

My eye looks different because of my astigmatism. Anything I can do?

The vision may be different in your right eye due to astigmatism, or another reason. Astigmatism just means that one axis of your cornea has a different curvature than the opposite READ MORE
The vision may be different in your right eye due to astigmatism, or another reason. Astigmatism just means that one axis of your cornea has a different curvature than the opposite axis. That means, essentially, the eye is slightly football shaped, rather than basketball shaped. There can be many reasons you have astigmatism; it can be normal for you, or it can be part of a more complicated issue. You will need an eye exam to determine what's happening. Astigmatism can be easily corrected with LASIK, PRK or other procedures in most cases. However, you will need an exam to determine if that is a good option for you. Hopefully, this information is helpful.