搜索            

无为论坛,没有版主,不删贴不封ID,北美中文论坛,加拿大中文论坛,红卫兵rolia,找工作,面试,职场,学英语,股市,炒股,心态,沟通

无为论坛,没有版主,不删贴不封ID,北美中文论坛,加拿大中文论坛,红卫兵rolia,找工作,面试,职场,学英语,股市,炒股,心态,沟通

Avatar

Not very promising (科技)

by arfeifei(老顽童★【○|||||||○】) ⌂, Toronto, 2016-01-31 11:58 @ int_arts

published on wuwei.ca at 2016-01-31 11:58, topic link: http://wuwei.ca/index.php?id=37832

As an optometrist in BC this is really a cool advancement. However, a few things weren't mentioned or really made clear. This is a type of multifocal lens which already exists today and typically run about $4000. It is also a procedure called a clear lens extraction or CLE which many laser eye centers already perform. The point is to remove your natural lens in the eye and replace it with a powered implant. Typically they implant only a lens with distance power still requiring reading glasses for up close. This type of muliifocal lens has also been used in cataract surgeries to provide people with clear distance, intermediate and near vision although they have been less than impressive. I'm excited to see if this will be an advancement in that area. Secondly, 3x better than 20/20 is a bit misleading. 3x worse than 20/20 isn't 20/60 as the the eye chart units don'y increase and decrease linearly . So 3x better than 20/20 may only be 20/15, still better though. Also, the claim that you will see better "no matter how crummy your eyes are" is also grossly misleading. It is true if you have no other diseases of the eye such as corneal scarring, glaucoma, optic nerve damage, a lazy eye, retinal detachments, eye turns or macular degeneration. All these diseases can lead to a loss of transmission from the eye too the brain that is the nerve fibers are lost.If there is a loss of cortical connections then no lens implant will make your vision any sharper. This will work best for adults who have no other eye disease. Finally, there are the risk involved with the surgery such as retinal detachments, infections and inflammation to name a few. I am excited to see what advancements this brings though.

---
拉拉拉,拉拉拉,我是蹲坑的小行家,忘了带纸就蹲下,一边拉一边夸,今天的分量真正大,没有几秒就拉了一大把。

  260 views

整个话题:

 RSS Feed of thread

 
[x]