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Ophthalmologist vs Optometrist

Submitted by mbanuelos0318 on Thu, 05/09/2019 - 22:02

Most people have visited the eye doctor at least once before, but do you know if that doctor was an ophthalmologist or an optometrist? If you do know what kind of doctor they were, do you know why you saw them and not the other type of eye doctor? We are about to find out!

To begin, ophthalmologists are medical doctors (MD) or a doctor of osteopathic medicine (DO) who specializes in vision and eye care. They can perform eye exams, diagnose and treat eye diseases by either prescribing medication or performing an eye surgery, and they can prescribe glasses and contact lenses.

Glaucoma and Meditation

Submitted by mbanuelos0318 on Thu, 05/09/2019 - 21:48

Glaucoma effects 64 million people worldwide, and can lead to blindness in 10 percent of cases. The blindness is a cause of the intraocular pressure (eye pressure); this is the pressure of the fluid inside the eye and high amounts of pressure can cause optic nerve damage. If the optic nerve is damaged, then the messengers system to get signals to the brain is compromised, and thus blindness is a great risk.

Infant Eye Development

Submitted by mbanuelos0318 on Thu, 05/09/2019 - 21:39

I can see how the title of this post may be a bit confusing at first, because I think we all know that when babies are born they have fully developed their eyes. Yes, much of the structural development happens in utero, but there are still many functional acuities that have not developed. A newborn baby does not have the same capabilities to capture and process information like we do.

Tunnel Vision (Peripheral Vision Loss)

Submitted by mbanuelos0318 on Thu, 05/09/2019 - 21:26

You might have heard of the term “tunnel vision” when referring to someone selfish who is only focusing on one goal and disregarding everything.  Tunnel vision is also actually a medical term used to talk about vision. The term refers to when peripheral vision is compromised, so you can only clearly see what you are directly looking at. This usually presents itself as a darkening of you periphery, as if you are looking through a tube (tunnel) and can only see the small amount the tube will allow you to see.

Keratitis

Submitted by mbanuelos0318 on Thu, 05/09/2019 - 21:11

Keratitis is defined as an inflammation of the cornea which is the clear part of your eye that is responsible for covering protecting the color of your eye (iris) as well as the hole that lets light reach the inside of your eye (pupil).

Why Do Onions Make Us Cry

Submitted by alexasaul on Wed, 05/08/2019 - 19:06

Chances are most of us have had this experience: We’re cooking and cutting an onion when all of a sudden you feel a tingling sensation and then begin to cry. What exactly is the process by which the smell of an onion makes us cry, and is this process different compared to when we cry due to emotions?

 

The Science Behind Impossible Colors

Submitted by alexasaul on Sat, 05/04/2019 - 22:56

We all know the colors of the rainbow. Red, Orange, Yellow, Green, Blue, and Violet. These are the colors that make up our range of visible light. Visible light ranges on the electromagnetic spectrum of light from wavelengths of 380 to 740 nm. Taking a step back, these wavelength values are called our range of visible light because they are what the photoreceptors in our eyes are able to respond to. Going off of this idea, it is actually possible that wavelengths within our range of visible light that our retinal cones are not able to detect.

Bacteria Use Their Bodies as Eyes

Submitted by carolineschulte7 on Mon, 04/15/2019 - 12:50

In the past few years, scientists have discovered that a certain type of bacteria is able to use their entire bodies as a way of focusing light, much like how humans or a camera focus light. These bacteria are known as cyanobacteria. Cyanobacteria are photosynthetic microbes that can be found on the surface of almost all types of water. This type of bacteria is able to manufacture its own food by using chlorophyll to perform photosynthesis. Therefore, light is essential to their existence.