“黑市”隐形眼镜有损眼健康
美国食品及药物管理局要求，隐形眼镜的销售应当由有执照的眼睛保健专业人员(配镜师或医生)来经营。但是，1998年以来，美国没有处方经黑市销售隐形眼镜的情况有所增加，隐形眼镜通过黑市或因特网不需处方即可购得。为此，美国食品及药物管理局发出警告，指出这种做法是违法且对眼睛有潜在性危害。
戴任何类型的隐形眼镜都会有一定的风险，包括细菌感染、对镜片涂层的过敏反应、角膜缺氧、角膜的磨损或溃疡等。因此，专业人员是隐形眼镜销售工作的保证。
比如说，镜片接触太紧会阻止眼泪对眼睛表面残留物的清洗，残留物留在在角膜上会激惹角膜。每个人眼睛的大小和形状都有差异，只有处方开出的镜片才能适合特定的眼睛。因为在做眼睛检查时，眼科医师还会检查角膜边缘附近的血管生长情况。这些血管能控制输送到角膜的氧，如果血管的健康状况不良将使角膜更易受到感染。通过因特网购买隐形眼镜，就算消费者持有一张有效的处方，也意味着并未进行相应的检查。而这些检查有助于发现一些早期的合并症。
, 百拇医药
另外，有人还自己将隐形眼镜片染色，这也有危险。据美国的验光协会的消息，不少青少年用食物着色剂将隐形眼镜片染色，以获得一种新形像。该组织已对这一时尚发出了警告。不过，只要人们不误用、请专家配制隐形眼镜，遵守医嘱，隐形眼镜应该是没有问题的。
为了您的眼健康， 戴隐形眼镜请注意以下几点：
1、应该严格遵循随镜附带使用指南。使用医生或验光师推荐的酶清洗液或盐溶液，不要用自来水、蒸馏水或自家配制的盐溶液来清洗镜片，也不要用唾液来湿润镜片。
2、禁忌与别人共用镜片；
3、睡觉时应除下镜片，即使是打瞌睡也不要戴，戴对时间不应超过眼保健医师规定的时限；
4、每次清洗镜片之前要洗干净手，摘下镜片前也要保证双手乾净、无菌，摘下的镜片应及时清洁、漂洗及消毒。
, 百拇医药
‘Black market‘ lenses
The FDA requires that contact lenses be dispensed by a licensed eye-care professional, either an optometrist or a physician. In 1998, after reports of increasing sales of "black market" contacts -- reports of lenses being sold at swap meets, purchased via the Internet without prescription and the like -- the FDA issued a warning that this was illegal and potentially hazardous.
The agency‘s diligence, Spinell says, is warranted because wearing any kind of contact lens poses some risks, including bacterial infection, allergic reaction to the lens coating, insufficient oxygen to the cornea, corneal abrasions or corneal ulcers.
, http://www.100md.com
Prescription lenses are fitted for a specific eye, and eyes vary in size and shape from person to person. Contacts that fit too tightly, for example, can prevent tears from flushing debris from the surface of the eye, instead trapping it under the contact and irritating the cornea, Yager says.
During an eye exam, he says, an eye specialist also checks for blood vessel growth around the edge of the cornea, which can restrict the flow of oxygen to the cornea, compromising its health and making it more susceptible to infection.
, 百拇医药
But buying contacts over the Internet -- even if people have a valid prescription to do so -- could mean contact wearers are avoiding checkups that can catch complications early, Yager says.
Then there‘s another danger. Some optometrists have been getting reports of teen-agers putting food coloring into contact lenses, apparently trying for a new look, according to the American Optometric Association. The group has issued a warning against the fad.
, 百拇医药
"As long as they are not misused, as long as they are professionally fitted and properly followed up, there should be no problems with contact lenses," says Dr. Lisa Badowski, an optometrist and chief of the Contact Lens Clinic at Ohio State University.
What To Do
If you wear contacts, the FDA recommends, for starters, that you follow precisely all directions that come with your lenses. Also:
, http://www.100md.com Use only the types of lens-care enzyme cleaners and saline solution recommended by your physician or optometrist. Never clean or rinse lenses with tap water, distilled water or saline solution made at home. And never use saliva to wet your lenses.
Never share lenses.
· Never wear daily-wear lenses during sleep, not even during a nap. And don‘t wear your lenses longer than prescribed by your eye-care practitioner.
· Wash and rinse your hands before handling lenses. Clean, rinse and disinfect reusable lenses each time they‘re removed, even if this is several times a day. Clean, rinse and disinfect the lens case each time you remove the lenses., 百拇医药
戴任何类型的隐形眼镜都会有一定的风险，包括细菌感染、对镜片涂层的过敏反应、角膜缺氧、角膜的磨损或溃疡等。因此，专业人员是隐形眼镜销售工作的保证。
比如说，镜片接触太紧会阻止眼泪对眼睛表面残留物的清洗，残留物留在在角膜上会激惹角膜。每个人眼睛的大小和形状都有差异，只有处方开出的镜片才能适合特定的眼睛。因为在做眼睛检查时，眼科医师还会检查角膜边缘附近的血管生长情况。这些血管能控制输送到角膜的氧，如果血管的健康状况不良将使角膜更易受到感染。通过因特网购买隐形眼镜，就算消费者持有一张有效的处方，也意味着并未进行相应的检查。而这些检查有助于发现一些早期的合并症。
, 百拇医药
另外，有人还自己将隐形眼镜片染色，这也有危险。据美国的验光协会的消息，不少青少年用食物着色剂将隐形眼镜片染色，以获得一种新形像。该组织已对这一时尚发出了警告。不过，只要人们不误用、请专家配制隐形眼镜，遵守医嘱，隐形眼镜应该是没有问题的。
为了您的眼健康， 戴隐形眼镜请注意以下几点：
1、应该严格遵循随镜附带使用指南。使用医生或验光师推荐的酶清洗液或盐溶液，不要用自来水、蒸馏水或自家配制的盐溶液来清洗镜片，也不要用唾液来湿润镜片。
2、禁忌与别人共用镜片；
3、睡觉时应除下镜片，即使是打瞌睡也不要戴，戴对时间不应超过眼保健医师规定的时限；
4、每次清洗镜片之前要洗干净手，摘下镜片前也要保证双手乾净、无菌，摘下的镜片应及时清洁、漂洗及消毒。
, 百拇医药
‘Black market‘ lenses
The FDA requires that contact lenses be dispensed by a licensed eye-care professional, either an optometrist or a physician. In 1998, after reports of increasing sales of "black market" contacts -- reports of lenses being sold at swap meets, purchased via the Internet without prescription and the like -- the FDA issued a warning that this was illegal and potentially hazardous.
The agency‘s diligence, Spinell says, is warranted because wearing any kind of contact lens poses some risks, including bacterial infection, allergic reaction to the lens coating, insufficient oxygen to the cornea, corneal abrasions or corneal ulcers.
, http://www.100md.com
Prescription lenses are fitted for a specific eye, and eyes vary in size and shape from person to person. Contacts that fit too tightly, for example, can prevent tears from flushing debris from the surface of the eye, instead trapping it under the contact and irritating the cornea, Yager says.
During an eye exam, he says, an eye specialist also checks for blood vessel growth around the edge of the cornea, which can restrict the flow of oxygen to the cornea, compromising its health and making it more susceptible to infection.
, 百拇医药
But buying contacts over the Internet -- even if people have a valid prescription to do so -- could mean contact wearers are avoiding checkups that can catch complications early, Yager says.
Then there‘s another danger. Some optometrists have been getting reports of teen-agers putting food coloring into contact lenses, apparently trying for a new look, according to the American Optometric Association. The group has issued a warning against the fad.
, 百拇医药
"As long as they are not misused, as long as they are professionally fitted and properly followed up, there should be no problems with contact lenses," says Dr. Lisa Badowski, an optometrist and chief of the Contact Lens Clinic at Ohio State University.
What To Do
If you wear contacts, the FDA recommends, for starters, that you follow precisely all directions that come with your lenses. Also:
, http://www.100md.com Use only the types of lens-care enzyme cleaners and saline solution recommended by your physician or optometrist. Never clean or rinse lenses with tap water, distilled water or saline solution made at home. And never use saliva to wet your lenses.
Never share lenses.
· Never wear daily-wear lenses during sleep, not even during a nap. And don‘t wear your lenses longer than prescribed by your eye-care practitioner.
· Wash and rinse your hands before handling lenses. Clean, rinse and disinfect reusable lenses each time they‘re removed, even if this is several times a day. Clean, rinse and disinfect the lens case each time you remove the lenses., 百拇医药