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标签： contact lenses

发表于 通过 Dr. Sherman Tung

Can I Wear my Contact Lenses for Longer than I’m Suppose to?

拍摄者 Lensabl 在 不飞溅

If I’m careful with cleaning, can I wear my dailies for more than 1 day?

Daily disposables are thinner and are made of a material that is not made to resist bacteria and buildup. So, if you try to clean or disinfect these thin lenses you may actually create breaks instead, further increasing infection risk. Using a compatible brand of soft contact lens rewetting drops to hydrate your daily disposables for comfort is acceptable.

What happens if I wear dailies for more than 1 day?

Wearing daily disposable contact lenses more than once puts you at risk for discomfort, dryness, corneal ulceration/scarring, and eye infections.

Differences between Dailies, Bi-weeklies, and Monthlies

Dailies are worn only for one day and discarded when you remove them, these are typically very thin and have a high water content. Natural deposits from your eyes build up easily on their surface, and they cannot be reused. This could mean more convenience but also, depending on how often you replace them, more costly.

Monthly or bi-weekly contact lenses are thicker than daily disposables. The thicker composition makes them more durable and long-lasting, and they are usually more resistant to drying out. However, they must be disinfected regularly in order to ensure healthy wearing.

发表于 通过 Dr. Melody Tong

What does my eye prescription mean?

拍摄者 Josh Calabrese 在 不飞溅

Eyeglass and contact lenses prescriptions can contain components and abbreviations that may be harder to decipher. Here are some of the common abbreviations and what they mean:

  • OD: or oculus dexter refers to your right eye
  • OS: or oculus sinister refers to your left eye
  • SPH: is the sphere and refers to the lens power required to help correct your vision. A (-) negative
    indicates nearsightedness and (+) positive indicates farsightedness
  • CYL: is the cylinder and refers to how much astigmatism you have if any. Astigmatism is caused
    by a cornea or lens that has a different shape than normal and multiple focal points.
    Astigmatism is very common.
  • AXIS: a number between 1 and 180, indicates exactly where the astigmatism appears on your
    eye
  • ADD: stands for the additional lens power needed to make it easier for you to read. This is seen
    on prescriptions for reading glasses or the lower portion of bifocal/progressive lenses
  • BO, BI, BU, BD stand for base out, base in, base up, and base down. These refer to the position
    of the prism on eyeglasses that correct double vision

For contact lenses you may see additional information such as the brand, mode of wear, and BC +
DIA.

  • BC: The base curve is the measurement that indicates the curvature and shape of your contact
    lenses. This is taken when the steepness or flatness of your cornea is measured.
  • DIA: The diameter is the measurement of the length that your contacts need to be to
    completely cover your cornea.
发表于 通过 Dr. Melody Tong

Are You Ready For Your Eye Exam?

拍摄者 nrd 在 不飞溅

Having an annual eye exam is a great way to not only take care of your eyes but your overall health as well. Eye exams can detect early signs of conditions such as diabetes and high blood pressure. Here are some tips to help you make the most of your next visit!

What to think about:

  • Have I noticed any eye problems such as blurry vision, flashes of light, floaters, redness, or double vision?
  • Are my daily activities being affected by my vision?
  • How do I take care of my contact lenses or glasses
  • Have I had any surgeries or injuries in my eyes that I could let the doctor know about?
  • Any family history of eye conditions such as glaucoma?

What to bring:

  • Your current glasses or contact lenses even if you have multiple pairs for different tasks
  • A list of your medications/supplements you are taking
  • Have someone who can drive you home or a method of transportation ready for if you have your eyes dilated. This happens often in yearly eye exams and can make you sensitive to light and have blurry near vision (~4-6 hours)
  • Vision and health insurance information

Questions to ask:

  • Differences between contacts and glasses for you and how this compares to surgery options as well?
  • If anything has changed in my ocular health since the last visit?
  • What any symptoms you may have mean and what you can do to prevent them from getting worse or resolve?
  • When should I return for my next visit?

发表于 通过 Dr. Elisa Xiao

Are Cosmetic (Color) Contact Lenses Safe?

photo credit: drtavel.com

Cosmetic contact lenses or colored contact lenses may seem harmless but can lead to severe eye problems or loss of vision if not fit by an eye specialist. You need to have a prescription for contact lenses as they are deemed medical devices by the U.S. Food and Drug Administration (FDA). Non- prescription contacts can create problems due to issues such as poor fitting or unclean packing/creation.

When contact lenses not specifically fitted and sized for your eyes are worn, the cornea may be scratched, potentially leading to the following:

  • Painful corneal abrasion
  • Decreased vision
  • Redness, soreness, itching
  • 对光敏感
  • Allergic reactions
  • Corneal ulcers

Eye infections are also very common in non-prescribed contact lenses and may lead to the following:

  • Persistent eye pain
  • Decreased vision
  • 对光敏感
  • Discharge from the eye (this could be green/yellowish mucus like or more watery)

Discussing your options and proper contact lenses hygiene with an eye care professional, having the
proper measurements of your eyes taken, and getting a valid prescription is an easy way to avoid these
potentially life changing complications.

发表于 通过 Dr. Sherman Tung

我需要验配隐形眼镜吗？

图片来自 rawpixel.com 在 Freepik 上

为什么我需要验配隐形眼镜？您知道眼镜处方和隐形眼镜处方是不一样的吗？验光师为您验配隐形眼镜时，会确保以下几点：

  • 您的眼睛健康状况良好，可以佩戴隐形眼镜。但如果您患有干眼症或过敏性结膜炎等眼部疾病，则需要先进行治疗才能佩戴隐形眼镜。角膜瘢痕、营养不良和/或角膜表面不规则等眼部疾病可能需要配戴特制隐形眼镜。.
  • 我们会根据您的生活方式，为您推荐合适的隐形眼镜类型。我们会根据您的职业、课外活动和其他需求，帮助您确定日抛型、双周抛型或月抛型隐形眼镜哪种更适合您。.
  • 找到舒适贴合、视力良好的隐形眼镜。我们会测量您的眼睛，为您挑选合适的镜片。许多公司生产隐形眼镜，每家公司都有自己的一套参数。我们会检查镜片是否过紧或过松，眨眼时镜片的移动情况，以及镜片是否位于眼球中心。我们还会确保您的双眼远近视力都良好。.

此外，我们首先会对新佩戴隐形眼镜的人士进行培训，指导他们如何安全地佩戴和摘取隐形眼镜。我们会详细讲解清洁流程，确保镜片得到安全处理，因为镜片上任何蛋白质和碎屑的积聚都可能损伤角膜。.