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Author: johnriggsod

Multifocal Contact Lenses for Children with Myopia

Myopia is the clinical term for what most people understand to be nearsightedness or where vision is better at near than at far. Myopia is prominent in children and typically appears between the ages of 8 and 16, progressing more with age1. This condition is believed to be caused by several environmental and genetic factors. For example, children who spend more time outdoors tend to be less myopic, and when both parents are myopic, it is more likely that their children will also be myopic.

Typically, doctors prescribe single vision glasses or contact lenses for myopic patients. These prescriptions have a lens that is curved and can refocus the light into the retina of the eye, therefore correcting the nearsightedness of the patient1. Several recent studies have shown that patients who are prescribed with a multifocal lens, instead of a single vision lens, have a slowed progression of myopia. A multifocal lens is a lens with more than one point of focus. Multifocal contact lenses slow progression more than multifocal glasses.

In the studies, children between the ages of 9 and 13 were treated for myopia with a multifocal contact lens1. Researchers found that 25% of the children had a lowered progression of myopia and 31% of the children also had slowed eye lengthening1. The biggest effect was found when children wore the contact lenses for 5-7 hours a day1. Doctors believe that if they can treat patients for myopia while they are younger, the treatment will have a stronger effect and they will be able to benefit more throughout their lifetime1. In the case of this present study, a doctor who prescribes a multifocal contact lens for a child may be helping the child to benefit even more, by preventing the vision of the eye from worsening.

Contact lenses allow children to feel better about their outward appearance because they do not need to wear glasses. Additionally, younger patients can participate in sports and activities with confidence and without worrying about glasses breaking or being damaged. Contact lenses are comfortable and convenient for patients of all ages.

Schedule your appointment today with Doctor Riggs to be proactive in the treatment of your eye health, as well as the eye health of your children!

References
“Multifocal Contact Lens Effective at Treating Myopia in Kids.” AOA Focus ; pp. 46-47. www.aoa.org. 16 August 2016.

Why we won’t go to Mars in 2022

November 2016

 

A note from Dr. Riggs:

 

I had the pleasure to attend the American Academy of Optometry’s annual meeting in Anaheim, California, from November 9-12. It had been several years since I had been to the academy meeting, and I had forgotten the high quality of education that they offer. One of the first classes that I attended was given by an ophthalmologist who performs research at Jules Stein and the Doheny Eye Institute in Los Angeles. This ophthalmologist is currently conducting research for NASA on the effects of space on vision. He showed slides by Elon Musk, and another by President Obama, which said “we will be going to Mars in 6 years,” but he said, “you can quote me, Alex Wong, that we will NOT be going to Mars in 6 years.” His research has shown that in a prolonged anti-gravity environment, fluids from the lower extremities raise to the upper extremities, resulting in a puffy face, a hyperopic shift in one’s glasses prescription, disc edema, choroidal folds, and cotton wool spots; all of which cause blurred vision. To combat this, his early research has shown that when he cuffs the legs with a pressure of 60mmHg, fluids stay in the lower extremities. This cuff was similar to a blood pressure cuff.

The next day I attended another lecture given by an OD obtaining a PhD at the University of Houston College of Optometry. He also conducted research on eyes in space, using both monkeys and astronauts. I saw a picture of a famous astronaut undergoing an OCT exam in space. The OCT measures the thickness of the retina and the optic nerve and produces a print out similar to an X-ray or an MRI. This procedure can be done at our office.

Other important points from my meeting include the following:

  • Another lecture talked about alternative medicines for the eye. Green leafy vegetables and dual leucine zipper kinase are beneficial and act as protection for glaucoma.
  • In the future, we will use a contact lens worn by the patient to obtain pressures of the eye 24/7, instead of several, single pressures a year, at the office.
  • Visual field defects in ocular migraine and amaurosis fugax (TIA) are similar, the first lasting 20-30 minutes and the later, less than 15 minutes, and the visual defects from a TIA tends to not disappear. The migraine visual defect is transient.
  • Monkeys have been trained to do visual fields (a side vision test), which helps with glaucoma research.
  • Thyroid eye disease occurs more often in smokers.
  • An eye that is down and out with the eyelid closed with a dilated pupil is an emergency. Twenty percent of these patients die within 48 hours. This is different than the same disease with normal pupil function which is not associated with mortality.
  • Apraclonidine, a glaucoma drop, can be used to diagnose Horners Syndrome.
  • Tattooed eyelids damage the meibomian glands, causing dry eye syndrome.
  • Cat scratch disease can cause blindness from a scratch or a lick from a baby kitten. The treatment is strong oral antibiotics.
  • After 6 months, less than 40% of glaucoma patients are using their medications as prescribed.
  • Sleep apnea is a risk factor for glaucoma. A C-pap causes the pressure to go up by 2-3mmHg.
  • When we lay down flat to sleep, eye pressure goes up 3-5mmHg. If we lay on our belly, our pressure goes up 9mmHg. If we lay on the side, the side closest to the pillow will have a higher pressure, an increase of 2-12mmHg. So if you have glaucoma, or are a glaucoma suspect, it is best to sleep on your back with your head raised using a wedge pillow or a hospital type bed. The goal is to have your head raised 30⁰.
  • OCTs and visual fields performed twice a year will pick up glaucoma progression much faster than when performed once a year.
  • There was a slide of George Clooney smiling. He has a slight asymmetric smile suggesting a past Bells palsy.
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