After having put young adults with normal vision through a battery of tests, scientists were able to conclude that females are better at discriminating among colors, while males excel at tracking fast-moving objects and discerning detail from a distance. These evolutionary adaptations might be linked to the hunter-gatherer past of humans.
The world’s biggest squid species have developed over time huge eyes to give them advanced warning of approaching sperm whales. Colossal (15m) and giant squid (13m) have eyes that measure 27cm (11″) across, which is much bigger than any fish on record.
If you bike a lot, you know that anything that distracts you from the road ahead will potentially cause an accident. I’ve had a few, and one of them actually just involved playing with my cycling computer. I ended up in the hospital. I’m concerned that the Owl 360 camera, which promises to let you check up what’s behind you on your bike, will end up causing more accidents that it saves. Then again, it’s cool to have the option of having eyes in the back of your head.
When I got my glasses on Wednesday, they were fine. However, the lenses didn’t fit tight enough and made squeaky sounds when I held the frames. I demonstrated this to the store and they promptly took them back on Friday to replace the lenses. They wanted to replace just one lens, but I showed them how both lenses were squeaky, the right one slightly less than the left one. Still, it was annoying and I was wondering when the lenses would just pop out.
I picked them up on Saturday. Both lenses had been replaced, at the store’s expense. I tested them and was sure that they were fit pretty snug, so I took them home. A few hours later, I realized that I no longer had 20/10 vision; my left eye was noticeably fuzzy compared to a few days earlier. I dropped off my glasses at the store on Sunday, telling them that the left eye’s lens was wrong.
Today, I went to the store again. They made me pass another eye exam. It turns out that my left eye’s prescription has slightly changed.
I have dyslexic eyes.
In actuality, I think that since I wear an old prescription at home and I rarely wear my contacts inside, my eyes have gotten used to not seeing very sharp. It’s always slightly blurry. This is tricky because it has to do with the astigmatism, not the nearsightedness. Anyway, since the left eye’s lens needs to be replaced, I’ll get the right prescription tomorrow.
While I was there, I spotted another pair of frames that I wouldn’t mind buying.
So in total, I’ll have made 7 trips to the store instead of just the customary 2. Lucky they’re just down the street.