The ABCs of cataracts

CataractCataracts are a fact of life. Anyone who lives long enough will get them and almost everyone knows someone who has had them.  The good news is, with the latest technology available, improving your vision is very safe and will often times leave you with better vision without glasses than you had before the cataract.

Let’s look at the ABCs of cataracts:

A – Age. Remember that cataracts are changes to the lens of our eye as we get older. Different factors can influence when the cataracts start to form. Cataracts tend to develop sooner in folks who spend a lot of time outdoors in the sun without sun protection or sunglasses. They also tend to form earlier if you have diabetes or if you are a smoker. So keeping your eyes out of the sun and staying healthy will help delay the onset.

B – Blurry Vision. The lens of the eye starts changing with cataract formation, making vision blurry. It is like looking out of a blurry window. Usually night driving will be much harder and cataracts can cause difficulty with headlights a night. Cataracts can also cause glasses prescriptions to change as well. It is common to need one or two changes in glasses prescription before the cataract is affecting vision enough to have it removed.

Courtesy of laulau555 on Flickr

Courtesy of laulau555 on Flickr

C – Cure! The good news about this eye disease is that there is a very good treatment option. Cataract surgery involves removing the blurry lens from the eye and inserting a prosthetic lens in its place. This is an outpatient procedure and can take as little as 20 minutes.  The new lens often has a prescription in it that will be very close to your current glasses or contact lens prescription and will allow you to see better without the use of glasses or contacts.  There are even lenses available that can help with near vision as well as far vision. Usually after cataract surgery, vision improvement can be noticed as early as the next day.

Remember, make sure to have routine eye health and vision exams to determine if cataracts are forming or changing.  Your eye care provider can assist you in determining the appropriate time to have them removed.  Until then, stay healthy and wear sunglasses!

~Lisa M. Weiss, OD, FCOVD
California Optometric Association
http://www.coavision.org

Vision and the aging eye

Courtesy of ORBIS US on Flickr

Courtesy of ORBIS US on Flickr

Many patients reach a certain life stage and realize they need to start thinking more about their vision and preventing eye problems.  This usually happens in their early to mid-forties when people notice reading is a lot easier when there’s plenty of light and the print is held further away.  Those who have seen an eye care provider for this problem should have already discovered that this is a normal aging process.  But how does one know when vision changes are normal or should be concerning?

Eye conditions that impact vision:

  • Presbyopia is the medical term for when the focusing muscles in the eye are not as flexible, causing poor focusing ability for objects nearby.  This typically occurs in the late thirties/early forties and is easily corrected with reading glasses or bifocal or progressive lenses.
  • Cataracts begin to develop in our forties and progress over time.  There is a natural clear crystalline lens in our eye which focuses light onto our retina.  With ultraviolet ray exposure, this lens can become more opaque and yellow over time, causing a dimming of vision and glare and haloes around lights.  The best way to prevent cataracts from progressing quickly is to protect the eyes with UV-blocking sunglasses anytime you are outdoors.  The good news about cataracts is that they can be easily removed and replaced with an artificial lens implant.  With the latest technology of intraocular lens implants such as muiltifocal lenses, patients are now able to see clearly at all distances without the use of glasses or reading glasses.
  • Glaucoma is a symptomless eye disease of the optic nerve head where the nerve slowly deteriorates over time.  Most patients who develop glaucoma will not have any symptoms until the late stages of the disease, when peripheral vision deteriorates and patients are left with tunnel vision.  There is no cure or preventative measure for glaucoma, however, it is easily treated with eyedrops.  The only way to determine if you have glaucoma is to have annual comprehensive eye examinations.

    Courtesy of Nargopolis on Flickr

    Courtesy of Nargopolis on Flickr

  • Macular Degeneration is another common eye disease that can cause debilitating vision loss.  This occurs when the macular region of the retina loses its integrity causing poor central vision with distortion or gray spots.  It is often detected upon routine examination, especially when photos of the retina are compared over time.  Fortunately, there have been extensive studies on macular degeneration and the field has changed dramatically over the last several years.  An important test in recent years is genetic testing to determine one’s risk factor for vision loss as a result of macular degeneration, as well as antioxidants that may be useful in reducing this risk.  Clear risk factors include a history of smoking, exposure to ultraviolet radiation, increased cholesterol levels and Caucasian women with lighter eyes and fairer complexions.
  • Retinal Detachment tends to occur more often in those who are older than 65.  The retina is a thin and fragile tissue that lines the back wall of the eye and sends visual information to the brain.  This tissue becomes more fragile over time and can easily develop a hole or tear leading to a retinal detachment.  If you experience flashes of light, new floaters, or a change in your vision, you need to be seen right away by your eyecare provider.

There are a myriad of eye conditions that can develop as one ages.  The most important and useful method of preventing vision loss is to stay healthy.  See your primary care physician regularly to evaluate and treat high blood pressure, high cholesterol, diabetes and other health conditions.  If you have uncontrolled health conditions, you can easily lose your vision to diabetic retinopathy, hypertensive retinopathy, or a stroke in the eye.

So, as I tell all my patients, see your physician regularly, eat green leafy vegetables, take your medications, and monitor your own blood pressure or blood sugar.  And of course, wear sunglasses outdoors and see your optometrist annually.

~Cindy P. Wang, OD, FAAO
California Optometric Association
http://www.coavision.org