Some research indicates sun exposure has the potential for damage to the lens and retina of the eye.
Aside from that, the white of the eye can be affected as well. The most common issues are pinguecula, pterygium and, more rarely, cancer.
Pinguecula may appear as a raised yellowish or grayish bump on the inner or outer side of the white of the eye. It may occasionally be irritated or dry out and make contact lens wear less comfortable. In and of themselves, they are not dangerous and we can treat the inflammation and drying effectively with topical eye drops. The only way to remove them is surgically, which is rarely necessary unless they become a concern cosmetically.
Pterygium is another benign growth on the inner and outer whites of the eye. They are vascularized growths that creep onto the colored portion of the eye. Pterygium may affect vision by inducing astigmatism or, if quite large, may even block vision directly. They also can be easily irritated and surgery is necessary to remove them.
Pinguecula and Pterygium are most common in people who spend a lot of time outdoors. Wearing good sunglasses with UVA, B and C protection is important to prevent them. If you develop a growth on your eye, make an appointment with your eye doctor.
Monday, July 29, 2013
Monday, July 22, 2013
Pupil Dilation Provides a More Accurate Prescription
If you have ever noticed that you can see more looking through an open doorway than you can see looking through the door’s peephole, you will understand why we dilate pupils.
When the pupil is small, we cannot see the details of the lens and the view of the retina is compromised. When we cannot see, we cannot adequately follow the progress of conditions such as diabetes, cataracts, macular degeneration, and the risk of retinal tears and detachments in the peripheral retina and we may miss important details that could lead to loss of vision.
We also dilate to understand a potential source of error in eyeglass prescriptions. Individuals with astigmatism or who are far-sighted tend to overfocus. When we dilate the pupil, we can relax that tendency and get a more accurate and comfortable prescription for eyeglasses.
We do not have anything to replace pupil dilation completely, but we have a partial substitute with the OPTOMAP — photography that gives a 210-degree view of the inside of the eye or 80% of the retina. This allows us to see somethings in better detail than a dilated exam, but there is still 20% we cannot see. At least every other year, we still need to dilate to look at the details of the lens that the OPTOMAP cannot see.
It should be noted that OPTOMAP, when used to avoid dilation, is not covered by insurance and you may pay out of pocket for the convenience of no dilation. In summary, though it may be inconvenient and a bit uncomfortable, dilation allows us to take better care of your eyes.
When the pupil is small, we cannot see the details of the lens and the view of the retina is compromised. When we cannot see, we cannot adequately follow the progress of conditions such as diabetes, cataracts, macular degeneration, and the risk of retinal tears and detachments in the peripheral retina and we may miss important details that could lead to loss of vision.
We also dilate to understand a potential source of error in eyeglass prescriptions. Individuals with astigmatism or who are far-sighted tend to overfocus. When we dilate the pupil, we can relax that tendency and get a more accurate and comfortable prescription for eyeglasses.
We do not have anything to replace pupil dilation completely, but we have a partial substitute with the OPTOMAP — photography that gives a 210-degree view of the inside of the eye or 80% of the retina. This allows us to see somethings in better detail than a dilated exam, but there is still 20% we cannot see. At least every other year, we still need to dilate to look at the details of the lens that the OPTOMAP cannot see.
It should be noted that OPTOMAP, when used to avoid dilation, is not covered by insurance and you may pay out of pocket for the convenience of no dilation. In summary, though it may be inconvenient and a bit uncomfortable, dilation allows us to take better care of your eyes.
Wednesday, July 10, 2013
The Right Time to Remove Cataracts
Historically, a cataract was ready to remove when it was “ripe.” This antiquated term was used to delay surgery until the cataract was advanced. Thankfully, that era has passed. Today, wonderful improvements in both cataract surgery and lens implants, including laser cataract surgery, routinely provide excellent vision, (often without glasses, depending upon the implant).
Medicare pays for cataract surgery when vision is 20/40 or worse. If cataracts interfere with something important, such as driving or reading, Medicare may pay for surgery earlier. The key is that the symptoms must be caused by the cataract, interfere with important life activities and must not be correctable by simpler means such as new glasses.
If your vision is worse than 20/40 but meets your needs, a delay in cataract surgery usually will not harm your eye or make the surgery more difficult. Medicare has recently found that cataract surgery by itself reduces the risk of falling and breaking a hip by 20%. Do not wait so long that your cataract is visible or “ripe” in the old sense and risk breaking a hip. Instead, see your eye doctor regularly to monitor your cataract, and when the time is right, enjoy your best possible vision for the rest of your life.
Medicare pays for cataract surgery when vision is 20/40 or worse. If cataracts interfere with something important, such as driving or reading, Medicare may pay for surgery earlier. The key is that the symptoms must be caused by the cataract, interfere with important life activities and must not be correctable by simpler means such as new glasses.
If your vision is worse than 20/40 but meets your needs, a delay in cataract surgery usually will not harm your eye or make the surgery more difficult. Medicare has recently found that cataract surgery by itself reduces the risk of falling and breaking a hip by 20%. Do not wait so long that your cataract is visible or “ripe” in the old sense and risk breaking a hip. Instead, see your eye doctor regularly to monitor your cataract, and when the time is right, enjoy your best possible vision for the rest of your life.
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