Archive for December, 2009

Eye Care for the Aging Eye

Monday, December 28th, 2009

By. Dr. Dennis Francis

Dr. Dennis Francis

Dr. Dennis Francis

It’s a fact of life that your vision changes as you get older. Knowing what to expect and when to seek professional care is important to your visual well-being. Wise lifestyle choices and routine eye examinations can significantly improve your chances for maintaining good eye health as you age.  Developing a healthy lifestyle that includes a proper diet, plenty of exercise, cessation of smoking, cessation of drug use or alcohol, drinking water, getting routine visual and general medical care are all important to your eyes later in life.

Macular Degeneration, Cataracts, Diabetes, and Glaucoma are principal causes of blindness in Iowa and in the United States. Tremendous progress has been made recently in both the diagnosis and treatment of these common diseases. Iowa EyeCare has the best tools in the Cedar Rapids area to combat these conditions. Early intervention can make a difference in your outcome.

Dry Eye is among the most common eye conditions of the aging eye.  Burning, watering, irritating eyes, can cause discomfort and reduce your quality of life.  Iowa EyeCare specializes in finding the right treatment option for the type of dry eye that you have.

Iowa EyeCare always welcomes new patients, both young and old.  Make an appointment to get started now.

 

The Aging Eye

The Aging Eye

 

The Iris: Details of Eye Color

Sunday, December 20th, 2009

 By Dr. David Christensen

Dr. David Christensen

Dr. David Christensen

The Iris

The Iris

 The colored part of the eye is actually a combination of two muscles collectively called the iris.  The iris functions as a dynamic aperture, allowing only a limited amount of light into the eye.  In dim light the dilator pupillae muscle contracts and the sphincter pupillae muscle relaxes, opening the aperture allowing more light to enter the eye.  In bright light, the opposite is true; the dilator pupillae muscle relaxes and the sphincter pupillae muscle contracts, closing the aperture allowing less light to enter the eye. 

Iris color is a result of pigmentation.  Pigment acts to block light from entering the eye.  The most common colors are brown, blue and green.  Eye color is genetic and is the result of influences from both mother and father, but is not a simple blend of color from both parents.  The genetic influences of eye color are not fully understood.

 

You may not know that eye color can change over time and may a result from several different factors.  Many young children are born with light-colored eyes that gradually become darker during the first few years of their life.  Other eye color changes may be the result of eye disease.  For example, pigmentary glaucoma, Fuch’s heterochromic iridocyclitis, and Horner’s syndrome can all result in changes to eye color.  Furthermore, some medications can alter eye color.  Prostaglandin glaucoma medications have been known to modify eye color over time.  Furthermore, the brilliant colors of youthful eyes can fade and dull over time.  If your eye color changes suddenly, please seek care immediately.  The eye doctors at Iowa EyeCare always welcome new patients.

Contact lenses now give you a choice in your own eye color.  Colored contact lenses are a medical device and require a prescription from an eye doctor.  Never purchase lenses from friends or from a beauty shop.  The damage from contact lens abuse can cause permanent vision loss.  If you are interested in colored contact lenses contact Iowa EyeCare in Marion, Robins, or Cedar Rapids, Iowa, today!

Genetics and Eye Color

Genetics and Eye Color

 

 
 
 
 
 

What does the term “lazy eye” mean?

Monday, December 14th, 2009

By Dr. Dennis Francis

_dfrancis

Dr. Dennis Francis

 I often hear patients say they have (or think they have) a lazy eye. The term “lazy eye” is actually synonymous with the medical term “amblyopia”. Amblyopia occurs when one eye fails to provide adequate vision and the brain begins to collect visual information from only the better eye. The poorer seeing eye subsequently fails to develop normally. If left untreated, amblyopia results in a best-corrected vision of worse than 20/20 and reduced binocular vision.

amblyopia

Amblyopia is most often a consequence of unequal glasses prescription between the two eyes or from monocular strabismus (one eye turning in or out). It is very difficult to re-train the brain once it decides not to use the amblyopic eye. Amblyopia is one of the most common causes of vision loss in children because it often arises without symptoms. Routine eye examinations play a key role in preventing vision loss from amblyopia.

The American Optometric Association and the eye doctors at Iowa EyeCare agree that even if no eye or vision problems are apparent, at about age 6 months, you should take your baby to your doctor of optometry for his or her first thorough eye examination. We can offer helpful suggestions to prevent amblyopia and, if necessary, begin treatment for any eye-related problems.

 

Please schedule an appointment with an eye doctor at Iowa EyeCare in Cedar Rapids, Marion, or Robins, Iowa.

Iowa Pheasant Hunting: Vision Tips

Tuesday, December 8th, 2009

By Dr. Ryan W. Nelson

 

rooster phesant

Hunting pheasant in Iowa can be challenging.  For those who have been hunting them for years, you know it’s getting tougher.  Here are some vision tips from an eye doctor that may help you harvest more roosters this year.

1. Yellow and amber tinted lenses can help you identify roosters from hens.

The colors of a rooster pheasant are easier to see when viewing them through a yellow or amber tinted lens.  This becomes even more important in dim light, or on overcast days.  If you have never looked though a quality pair of tinted lenses, now is the time to give it a try. 

2. Single vision lenses will help you maintain a clear shooting target.

Spectacle lenses built specifically for hunting are a must for today’s avid hunter.  Progressive addition bifocals are great for day-to-day wearing, but often have areas in the periphery of the lens that do not provide sharp vision.  Do yourself a favor and select a pair of single-vision distance lenses with a large eye-size.

LASIK surgery may also be the perfect solution.  LASIK may reduce your dependency on glasses while hunting all together. 

Click here for the best LASIK in Iowa

3. Central vision is best for acuity and identification, peripheral vision is best for detecting movement.

Allow me to get technical for just a minute.  The human visual system can actually be thought of as two systems working together.  The “Whereis the bird” system (called magno) and the “What type of bird” system (called parvo).  The magno system alerts us to a visual event and the parvo system identifies the event.  The magno system does not carry information such as color and detail, so that it reaches the brain quickly.  The cells that trigger the magno system are located in the periphery of the eye, those parvo cells responsible for detail are located in the macula (the area lined up with the center of the pupil).

Regular eye exams help detect the diseases that attack these two systems.  Glaucomaaffects the magno system and macular degeneration affects the parvo system.  Both glaucoma and macular degeneration can cause blindness if left untreated.  If glaucoma and macular degeneration are caught early, before they start causing problems, you have a much greater chance of hunting pheasant in your golden years. 

4. Stay away from billed caps that limit your visual field.

Finding more birds can be as simple as removing your hat …or finding one without a brim.  You already know that your peripheral vision tells you “Where is the bird”.  The human visual field extends 165 degrees horizontally and 135 degrees vertically.  Compare that with a pheasant who might have more than 270 degrees horizontally and 170 vertically.  A hat with a brim only further limits your range of vision.

5. Shoot with both eyes open.rooster phesant 2

Not only is shooting with both eyes open safer, but it opens up your peripheral vision so that you can identify your next shot quickly.  Spend extra time at the shooting range practicing your aim with both eyes open.

To learn more schedule an eye exam in Cedar Rapids, Marion, or Robins, Iowa.

Thicker, Darker and Longer Eyelashes? Consider Latisse®

Monday, December 7th, 2009

By Dr. Richard Noyes

Latisse Results

Would you be interested in a product that will make your eyelashes thicker, darker and longer? 

 Latisse® allows you to achieve beauty naturally, using the body’s own pigment.  Latisse® contains an active ingredient that optometrists have used safely for years and is the only FDA-approved prescription treatment for inadequate eyelashes.  Latisse® is proven to prolong the growth phase of hair and stimulate thicker, darker and longer eyelashes.

 Latisse® is applied once daily to the eyelashes using a sterile applicator.  Users can expect to see results in 8 weeks with full results occurring at 12-16 weeks.

 Latisse® may eliminate your need to use mascara and has the potential to reduce lid conditions and contact lens complications that can result from incomplete or improper removal of mascara.

 To find out if Latisse® is right for you, schedule a consultation with the doctors at Iowa EyeCare today by calling 319-377-2222.  Iowa EyeCare has locations in Cedar Rapids, Marion, and Robins, Iowa. Additional information about Latisse® can be found at http://www.latisse.com/.