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Bird Flu: Personal Preparedness Must Include These 4 Critical Areas
The recent hurricanes Katrina and Rita have been powerful
reminders of how destructive the forces of nature can be, and
how preparation for them can mitigate their effects. Avian
influenza, commonly referred to as "bird flu," is a powerful
force...
Diabetes and its Management
Diabetes and its Management
Diabetes Mellitus is one of the most costly burdensome chronic diseases of our time and is condition that is increasing in epidemic population in the whole world. The complications resulting from the diseases are a...
Health and Medical Advice on the Internet
Health and medical advice on the Internet: Use it wisely to overcome illness and find more happiness in your life. I’ve got a bit of a problem with depression and anxiety. I’ve been tackling these problems for several years without the use of...
High Blood Pressure and Ways to Reduce It
High blood pressure mainly effects the older generation. It is measured by 2 measurements, the first being the systolic blood pressure and the second being the diastolic blood pressure. Systolic is measured at the very peak when your heart is...
Your own attitude makes the difference!
In life there is a huge variety of things that you can’t control, no matter what! Nevertheless, you should never let those things, regardless of how bad they are, defeat you. Remember that, no matter how bad the situation gets, you’re the one who...
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Seven Questions About Contact Lenses Answered
Q: Is it safe to wear soft contact lenses during asleep?
A: Some soft contact lenses are approved for sleeping by the
FDA. These lenses have been tested for safety, but it is vital
to follow the rules as prescribed by your practitioner. It is
not safe to sleep in daily wear lenses. Your eyes could
experience permanent damage due to a lack of oxygen.
Q: Is it safe to order contact lenses online?
A: Contact lenses are a prescription medical device. By law,
they cannot be sold without a valid prescription. There is
nothing wrong with ordering lenses online as long as you have a
valid, new prescription from your eye care practitioner and you
are having regular check-ups to make sure your lenses are
fitting well and your eyes are healthy. Do not let any contact
lens company change the brand or type of lenses you are wearing.
Q: Is it safe to switch contact lens solution?
A: Each contact lens care solution has a different chemical
makeup. Some use harsh preservatives that cause sensitivity and
even allergy in a high percentage of users. Some can discolor a
patient's contact lenses, making them useless. Sometimes the
chemicals in one lens cleaning system can improperly combine
with the chemicals in another system when they are used in
combination, causing a reaction for the user.
Q: Is it safe to swim with the soft contact lenses in?
A: It is highly recommended to wear goggles if you swim with
soft contacts on your eyes. There are nasty bugs living in
swimming pools. One of them, called acanthameba, can cause
horrible pain and damage to your eye. The water can change the
way your lenses fit, making them too tight and causing severe
eye health problems. So, either take them out for swimming or
wear goggles. Or you can use one-day lenses.
Q: Why do some contact lenses feel drier than others?
A: Contact lenses are made from different plastics and silicones
that have different characteristics. Some
have more water
content than others. All contact lenses are subject to
evaporation while on the eye. The rate of this happening depends
on many factors: humidity, wind, temperature, your health, what
medicines you are taking, how much you blink, the care system
you use, how clean the lenses are, etc. A few contact lenses are
now available that are made from plastics that resist
dehydration and evaporation.
Q: Why blood vessels grow into the color of the eyes?
A: When contact lenses are over worn, the cornea has been
starved for oxygen during overnight wear. This oxygen
deprivation stimulates the growth of new blood vessels
(neovascularization) into the cornea where blood vessels usually
do not exist. The farther into the cornea they grow, the more
problematic they can be. When the contact lens wear is stopped,
the blood vessel growth stops, but the vessels themselves
remain, though the blood within them may disappear - so called
ghost vessels. Depending on the severity of the
neovascularization, resuming contact lens wear may not be
possible.
Q: Why some people, wearing rigid gas permeable contact lenses,
perceive irritation in their eyes after gusts of wind.
A: Unlike soft lenses, rigid gas permeable lenses are smaller
than the cornea. They float on the tears, moving up and down
with every blink. A gust of wind can blow dust and other
airborne material into the tears, which then carry this material
under the lenses upon blinking. This occurs less often with soft
lenses since they are covering the entire cornea. Eye drops can
help solve the problem.
About the author:
Are you planning to wear contact lenses? Visit Contact
Lenses Center for the latest news about discount
contact lenses. You will also find a lot of information on
colored
contact lenses.
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