Archive for the ‘Eye Care’ Category

A Guide to Ophthalmic Equipment

Thursday, November 15th, 2012

Ophthalmic equipment and other eye-care tools are some of the most finely hones in all of medicine. Think about how exact they would need to be in order to make the minuscule corrections that you need to measure and correct your eyesight.So, even if you are not looking to pursue a career in eye care, you may want to learn more about the equipment that will be used on your eyes and their purpose.

• The eye chart – Probably the most recognized diagnostic tool in the eye care technician’s arsenal. It is used to test your visual acuity. Basically, this is a test of how clear your vision is and to test the sharpness of your retinal focus. It also helps to test the brains ability to interpret the data correctly

• The Phoropter – This is the giant machine that hangs from an articulated arm and probably reminds you of a medieval torture device. It has a face plate with two apertures for you to look through and the technician will ask, “Better or worse?” Inside those apertures are different lenses that are used to measure your refraction error and help to narrow down the proper prescription for your eyes.

• The cover test – This is mostly given to children but can also be used on adults. One eye is covered for a short length of time. Then when it is uncovered both eyes are watched for movement. If there is a “Lazy eye” it will start to wander inwardly or outwardly as it tries to compensate for its visual disparity. This can uncover defects such as Tropia, the constant misalignment of the eyes and Phoria that is only evident when both eyes stop focusing on the same target.

• Glaucoma test – This is the one that everyone, including me, dreads the most. You put your chin into a machine that holds it in place. You are usually looking at a barn in a pasture when they blow a puff of air into your eyes. It is testing the fluid pressure in your eye to make sure that it is draining properly and not building pressure that would impinge on your optic nerve.

Those are the most common tests that you will have to sit through on your yearly visit to the eye doctor. No one is claiming the process is pleasant but it certainly beats the alternative. Plus, on the bright side, many eye care technicians have a variety of sucker flavors for you to enjoy after the tests.

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Refractive Cataract Surgery

Thursday, October 27th, 2011

A cataract is a clouding of the eye’s lens that can impact vision a little or a lot, depending on its severity. Believed to be just a normal effect of aging, cataracts mostly affect older adults, though a family history or congenital condition may put younger people at risk as well. Your lifestyle often changes drastically if you develop cataracts: you may not be able to read books or watch TV, your driving ability may be impaired to the point that it isn’t safe anymore and you may deal with irritating double vision or light sensitivity. It’s not surprising, then, that many people with cataracts opt for refractive cataract surgery.

About Refractive Cataract Surgery

Cataract surgery has been around for quite a while, and some things haven’t changed-like the fact that there’s no way to remove a cataract from the lens without removing the lens itself. So during any surgery for cataracts, the patient’s natural lens will be replaced with a new, clear lens. Refractive cataract surgery, however, is relatively new, and its goal is a bit more aggressive: to eliminate the cataract while also improving patients’ overall vision. The end result is that many people who need glasses and contacts before surgery may be able to toss them afterward, thanks to the new generation of intraocular lenses (IOLs).

Choosing IOLs

There are several versions of IOL available for patients today:

* Crystalens is unique because it attaches directly to the ciliary muscles, allowing the eye muscles to move the lens. These IOLs move naturally with your eyes to give you a clear picture of objects at all distances.
* ReSTOR lenses contain zones in concentric circles that allow the eyes to see images clearly both up close and far away.
* Tecnis, like ReSTOR, has concentric rings for multiple-distance viewing. It is also foldable, allowing the surgeon to insert it through a small incision.

Your surgeon will go over the pros and cons of each IOL and help you decide which is right for your anatomy and lifestyle.

Additional Benefits of Surgery

Removing the cloudiness associated with cataracts is, of course, the primary aim of surgery. But with today’s IOLs, refractive cataract surgery can also help with nearsightedness and farsightedness, as well as these conditions:

* Presbyopia. This is a condition, affecting everyone beginning in middle age, makes it tougher to focus on objects up close. All of the lenses above offer presbyopia treatment.
* Astigmatism. This condition is the main reason people used to need glasses or contacts after surgery. Lenses known as toric IOLs are now available to treat astigmatism during surgery.

During your free LASIK screening our cataract screening, the Houston LASIK doctor all answer any questions you have and cover all risks and benefits in detail.If you have been living with imperfect vision and have been dependent on glasses or contacts for years, LASIK can be each truly remarkable and life changing procedure. Their office not only provides Laser eye surgery but also Lasik eye surgery Houston.