Eye Tests That Look Like Magic
看起來就像變魔術的眼睛小測驗
Blind Spots
盲點
Human eyes have a blind spot where the optic nerve exits the back of the eye. This area has no light receptors because the nerve is in the way. You can find your blind spot with this test. Look at the red cross on the left with your right eye. Closing your left eye, move your head slowly closer and further away.
人的眼睛有一個盲點，視神經在那從眼球後方出去。此區域因為神經擋住所以沒有光受器。你可以用這個測驗找到你的盲點。 用右眼看著左邊的紅色叉叉。閉上你的左眼，將你的頭慢慢靠過去，然後漸漸移開。
Oh...that's so weird.
噢...真奇怪。
At a certain distance, the blue dot on the right will disappear. Pause if you need to. You've just found your blind spot!
在一個特定距離，右邊的藍點會消失。需要的話就按暫停。你剛找到你的盲點了!
After-Images
殘像
Stare at the white dot in the center of the image and try not to blink. Your eyes have three types of cones, or color receptors—red, green, and blue. After-images appear when you stare at a particular color for too long and those color receptors get tired. So when you suddenly switch to looking at a black-and-white image, those tired receptors aren't working as well. This leaves an after-image of the reverse colors.
盯著圖片正中央的白點，試著別眨眼。你的眼睛有三種錐狀細胞，或色彩受器－－紅、綠，以及藍。殘像出現，在你盯着一個特定顏色太久然後那些色彩受器感到疲憊的時候。所以當你突然轉換去看一張黑白圖片時，那些疲勞的受器就沒運作得那麼好了。這留下相反顏色的殘像。
See Your Veins
看見你的血管
Blood vessels and veins feed the photosensitive cells in your eye to keep them alive. These blood vessels cast shadows on your retina. Here's how you can see those veins. Poke a small hole in a Post-it note or piece of paper; hold it against a bright white background, like your computer screen. Look through the hole while shaking the Post-it slightly—you should see a shadowy network of lines, sort of like the veins of a leaf. These are the veins in your eye.
血管和靜脈供應養分給你眼睛內的感光細胞讓它們活下去。這些血管在你的視網膜上投射陰影。這裡是你能看到那些血管的方法。在一張便利貼或紙上戳一個小洞；把它對着一個亮白的背景，像是你的電腦螢幕。輕輕晃動便利貼時看過那個小洞－－你應該會看到一個線條組成的模糊網狀物，有點像是葉脈。這些就是你眼睛裡的血管。
Oh, wow!
噢，哇嗚!
Gross!
噁!
Dominant Eyes
慣用眼
Most people have a dominant eye, meaning that one eye gives more priority information than the other. Eighty percent of people are right-eye dominant. See which is your dominant eye. Make a triangle between your thumbs and forefingers. With both eyes open, look at an object several feet away. Center the object inside the triangle. Close one eye, and then the other. Your dominant eye will look like this. And your non-dominant eye will look like this. It's almost...visionary.
多數人有一隻慣用眼，代表一隻眼睛比另一隻提供更多優先資訊。百分之八十的人慣用右眼。看看哪隻是你的慣用眼。在大拇哥和食指間比出一個三角形。雙眼張開，觀看一個距離數呎遠的物體。把那物體置於三角形中央。閉上一隻眼睛，接著閉上另一隻。你的慣用眼看起來會像這樣。你的非慣用眼看起來則像這樣。這幾乎像是...幻覺。
See what "eye" did there?
看見「眼」做什麼了嗎？
- 「阻撓、擋道」- In The Way
This area has no light receptors because the nerve is in the way.
此區域因為神經擋住所以沒有光受器。 - 「有點、有幾分」- Sort Of
Look through the hole while shaking the Post-it slightly—you should see a shadowy network of lines, sort of like the veins of a leaf.
輕輕晃動便利貼時看過那個小洞－－你應該會看到一個線條組成的模糊網狀物，有點像是葉脈。
