Ever notice how tired and dry your eyes feel when you're working long hours at the computer? A few small
steps can make a big difference in your comfort. We tend to blink about 3 times less frequently when we're
concentrating on a reading task. This results in more evaporation of our eyes' tear layer, so using artificial
tears can make a big difference. Some people find that a humidifier at their desk helps as well. If you can
lower your computer screen slightly so that your eyes look downward a bit (without stooping your head, neck
and shoulders), your upper eyelids will naturally help block some of the evaporation too. Taking breaks every
30 minutes or so to focus at a far-off point also helps relax the ciliary muscles in the eye which can feel
cramped after long periods of near work. And finally, make sure your vision is optimally focused for computer
reading, whether that be with the help of glasses or one of the many refractive corrective procedures offered
at Pacific Vision Institute.
What's new in vision correction procedures
In the past, most people had cataract and lens replacement procedures with a standard single vision lens
that could only correct nearsightedness and farsightedness. However, if you also had astigmatism, chances
are you would still need glasses to see well in the distance. Not any more. We can now use revolutionary
"toric" lenses that have the astigmatism correction built into them. For the first time ever, we can accurately
correct someone's astigmatism while treating their cataract and their lens as well. This equals superior
distance vision without the aid of glasses after cataract and lens replacement surgery. Not everyone is a
candidate for this procedure, though. During your comprehensive examination at Pacific Vision Institute,
we will be able to determine if you will benefit from this innovative technology.
New lens implants for cataract surgery are becoming available each year. In a previous iSight, we reviewed
the lenses which are currently approved in the United States. In addition, there are lenses being developed
abroad that use a variety of new technology such as 'dual optics', in which a small lens-within-the-lens shifts
forward and back with each contraction of the eye's ciliary muscle. This design mimics the accomodation
action (i.e. the ability to alternate focusing far and near) that our natural lens has when we're young. Watch
for news of new and exciting technological advances such as this in future Pacific Vision Institute iSights.
Fun Eye Facts
An ophthalmologist at Stanford named Michael Marmor has been studying how vision problems from eye
diseases affected the work of several famous artists. By reviewing archives of artists' letters and medical
records he discovered information about the quality of vision these artists had as they painted. For example,
he found evidence that painter Edgar Degas had significant deteriorating vision from retinal disease, and he
suggests this may have contributed to Degas' shift towards a more abstract, less detailed style over time.
Dr. Marmor has used computers to simulate how artists may have seen their own artwork. You can explore
Dr. Marmor's work at
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