Ask an Eye M.D.
Dr. David K. Coats

Dr. David K. Coats

David K. Coats, MD, is associate professor of ophthalmology at the Baylor College of Medicine and a board-certified ophthalmologist specializing in pediatric ophthalmology and adult strabismus. Following undergraduate studies at the University of Texas at Austin, Dr. Coats earned his medical degree from Texas Tech University Health Sciences Center in Lubbock. He completed his residency in ophthalmology at the Storm Eye Institute, Medical University of South Carolina, followed by fellowship training in pediatric ophthalmology/adult strabismus at Indiana University Medical Center, Indianapolis.

Is it true that we are born with our eyeballs already full grown?
 
Can the iris of one eye be larger than the other?
 
Why would a photo show a white reflex (a white pupil reflection, rather than the normal red eye, seen in a flash photograph) while an in-person exam does not?
 
My 7-year-old son was prescribed glasses a year ago after "failing" his 6 year well-child checkup.
 
Can you use cooled eye drops on a 4-year-old?
 
Can over-use of sleep medicine cause pupil dilation in one eye only?
 
Is there any eye drop available to treat chalazia?
 
Should a child with ongoing pain and itching in one eye go to the doctor?
 
My son's eye has a yellow spot. What should I do?
 
My son doesn't blink while watching television. Should I have him evaluated?
 
Why is my son seeing cartoon images in the evening?
 
My daughter had her eyes tested because she was battling with reading. During the eye test we noticed that any digit or letter that is curved like a 9, 3, an "a", or a "c," she was recognizing as a zero. What is this condition called?
 
My son is two months old and was born with brown eyes. Now the ring around his eyes and the white part of his eyes is blue. Is this normal?
 
My daughter's sclera have become yellow recently while she is in Costa Rica. What could cause this other than jaundice?
 
I have an ingrown eyelash—do I need to go to an Eye M.D. or an optometrist?
 
What could cause a 6-year-old to blink hard and constantly?
 
What is convergence deficiency and what causes it? Could it be caused by premature birth?
 
For the past few weeks my 9-year-old son's eyes will (for no apparent reason) look up to the right.
 
My 5-year-old daughter has been complaining of intermittent eye pain for the last 3 weeks.
 
My 3-year-old son has started blinking a lot while watching TV and watching some cartoons on the iPad. Nowadays we see him blink more in the evening. Do you know what might be causing this?
 
Why does my son keep dropping his head and swaying his head left to right while watching TV?
 
Can you tell me of any organizations that offer support for teenagers with strabismus?
 
What causes one pupil not to react to light properly?
 
My 14-year-old granddaughter is experiencing some vision problems. She can see fine straight on, but has blurring at the sides. When she looks at pictures, up to half on the side is gone.
 
Can my premature daughter's pseudomonas infection spread to her other eye?
 
My 2-year-old has started complaining that his eyes are shaking quite frequently. However, I am never able to see the shaking myself.
 
Does my son have a chalazion or something else?
 
Can you transfer pink eye to your pet?
 
How do I treat outbreaks of Meibomian cysts?
 
I had double vision after having Lyme disease. Now I have a prism which was changed to 23. What else can be done?
 
I see a spot in my vision following surgery. What could this be?
 
Can You Treat Strabismus in Midlife?
 
I have been diagnosed with a posterior vitreous detachment. The doctor said he will check it at intervals until it is healed. Could you please explain what the process is that constitutes a healed posterior vitreous detachment?
 
My son has allergies and often rubs his eyes and they do get a little red. How do I know when it's just his allergies and when I should have it checked for pink eye?
 
My son was born with a smaller pupil than the other. Why and what is it?
 
My son was using the weed trimmer and a rock hit his eye. I think it hit his eyelid and it caused the eye to dilate--will this be all right? He says he can see fine.
 
I’m having my eyes dilated and wondered if the use of Flomax and Avodart will prolong the dilation or interfere with the dilation in any other way.
 
If my 10-year-old doesn’t wear his glasses, will the strain of not wearing them make his eyes worsen more
 
Can I improve eye vision naturally through exercises so I don’t need to wear eyeglasses or contact lenses?
 
Are women more prone to developing macular degeneration than men?
 
If a child has lazy eye, is treatment necessary?
 
What does independent research show about the effectiveness of vision therapy for children?
 
How does a child get pink eye and what are the causes I could have avoided so my child wouldn’t have gotten it?
 
My 8-year-old granddaughter turns her head completely to one side when she watches television. She watches out of one eye only. Her vision has been checked and vision in both eyes is good. However, this does not seem right. What could cause this?
 
My child has Down syndrome and autism. I was surprised to find out he has cataracts in both eyes, one may not be operable. They are suggesting possible ocular implants. What is the success rate and percentage of possibly getting an infection?
 
My daughter is 12 and we just realized about six months ago that she is color blind. I'm not exactly sure how long it has been, but I'm sure it wasn't always there.

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