Author Archives: sungbin93

LASIK Surgery: No More Glasses on You

According to Statistics Netherlands, more than 60% of population wear glasses or contact lenses due to their poor vision, and the rate of people wearing glasses or lenses is keep rising. The vision changes are often caused by presbyopia, cataracts, and glaucoma, and people may have a blurred eyesight as a result of these problems. They wear glasses or contact lenses to adjust their vision, but it is uncomfortable in many ways because it costs money, takes time to wear, and slides down a lot. Therefore, theses days, high number of populations get LASIK surgery to fix their vision and to get free from wearing glasses or contact lenses.

Image from: Flickr

LASIK stands for laser-assisted in situ keratomileusis, and it is commonly known as laser eye surgery or laser vision correction. For a better understanding of LASIK surgery, knowing how our eyes work is important; the cornea of the eye refracts the light rays entering so that the light rays can pass through the pupil, and then retina receives the image. The cornea plays an essential role in this process because it initially refracts the light rays and focuses the image to retina of our eyes. Thus, if the cornea is unable to function properly, it is said that one has a poor, blurred vision.

Image from: Cornea Research Foundation of America

LASIK surgery is a great way to fix this problem because it is a surgery that reshapes the cornea when the cornea cannot focus the image accurately anymore. Generally, laser and microkeratome are used to perform the surgery, and the procedure is very simple:

1. a thin, circular flap is created in the cornea with the use of microkeratome

2. the hinged flap is folded back for an access to the underlying cornea

3. some of the tissue of cornea are removed with a highly-specialized laser to reshape the cornea.

4. cover the cornea with the flap again

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Likewise, LASIK surgery is a very simple process that takes less than 10 minutes, but it lasts forever. After the LASIK surgery, there is no need to worry about having blurred vision anymore. Also, it is a safe surgery, therefore the risk of side effects is almost negligible. Would you like to spend 10 minutes of your life for a clear new vision that will lasts forever?

References:

All about vision: The LASIK Procedure

CBS: Statistics Netherlands

National Keratoconus Foundations: How the eye works?

by Sungbin Choi

Savant Syndrome: differently abled, not disabled

image source: from Flickr www.123rf.co

Have you ever heard of savant syndrome before? Savant syndrome is a condition wherein a person with mental disabilities such as autistic disorder has immense gifts of intelligence or talents in a specific area. According to Gale Encyclopedia of Public Health, about 10% of autistic children have savant syndrome. Perhaps, savant syndrome is one of the most unbelievable phenomena in the study of human cognitive system. 

“He has a remarkable musical ear and an uncanny ability to hear pretty much every detail in a piece of music”

image source: from Flickr http://www.telegraph.co.uk/culture/music/music-news/5398303/Human-iPod-Derek-Paravicini-to-give-first-full-concert.html

The exact cause of savant syndrome is still unknown, however, there are some hypothesis that explain how an autistic people can become savants. For example, some researchers think that the savant skills are entirely based on the ability to memorize; they memorize every single piece of what they need to perform their skills. Meanwhile, there is another hypothesis, which states that the intelligence is separated from mental ability and they are not related to each other.With this hypothesis, it is possible to explain how an autistic person can have such gifted abilities.

Their talents can appear in many areas including arts, music, and mathematics. There are many people who became popular with their gifted skills. An English autistic savant writer, Daniel Tammet is a representative example of autistic savant. He was diagnosed with asperger syndrome at his age of twenty-five, but he has incredible abilities of calculating numbers and learning languages. Actually, Daniel is the holder European record for reciting pi from memory to 22,514 digits. He has also written a book called, Thinking in Numbers, which has been selected as BBC Radio 4’s Book of the Week in the United Kingdom, and he now works as writer and educator.

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People with savant syndrome are accurate as computers, fast as calculators, and they also pictures like cameras. Should we call them disabled? or are they genius who are differently abled than us?

 

 

References:

Daniel Tammet, Autistic Genius, Savant – Causes of Savant Syndrome

 

by Sungbin Choi