Color Blindness / Catarina

Color blindness is a rare condition identified as the inability to clearly identify different colors of the color wheel. The difficulties can be low but sometimes dangerous. Many people confuse this term as the same thing as compelete blindness which is a common misunderstanding.

In the human eye there are “receptor cells” called cones, these are found in the retina (a light sensitive tissue found in the back of your eye, that identifies light rays). Each person should have three types of cones, red, green and blue. This is what enables most people to see all colors. Any damage or abnormal deficiency in the cones can lead to unusual color vision.

There are nine types of color blindness. The first four lie under the catagory of red-green color blindness, these are. Protanomaly, this is when the cone is abnormal and the colors red, yellow and orange are veiwed as darker than usual. This is a mild diagnoses and only affects 1 percent of males. The next is Protanopia similar, but red is identified as black and orange, yellow and green are seen as the same color. Deuteranomaly and Deuteranopia similar to each other Deuteranopia is a major colorblindness when you are only able to identify brownish yellow, red and mix green with beige. There is also another stage of color blindness that involves Blue – Yellow. Tritanomaly is the difficulty to see blue as it appears green and yellow can be confused as red and pink. This is an extremely rare disorder. Tritanopia people who lack blue cone cells, their color appears as greener also difficult to identify yellow and red from pink. Last stage is Compelete color blindness Rod monochromacy or achromatopsia and Cone monochromacy the most severe of the two, Rod monochromacy or achromatopsia. This disorder is diagnosed at birth and is when people see the world in black and white, this virus can make people uncomfortable in bright enviroments and also might suffer photophobia (bright lights damage your pupils).

INTERESTING FACT 1.8% of males have color blindness when 1 out of 200 women have color blindness 4.5%  percent of entire population

Most color blindness comes from genetices or is presented at birth. Color vision problems can also be attained by natural causes such as, aging, any injury in the eye and side effects from medicine. Symptoms are not being able to see all colors and not having the ability to identify different shades of a color. In addition color blindness is most commonly found in males. As an acception there are also young girls that atain color blindness but that eases as they grow. Although most people with colorblindness are dont improve overtime and sometimes worsen over time.

Unfortunatley inherited color blindness may not be treated permanently. Although there are Color Blind glasses that can temporarly let a person see color for the duration the glasses are on for.

While researching this concept I learnt that there are many different categories of color blindness and how people can be diagnosed with color blindness. I also learnt that color blindness is a serious issue for people’s daily lives, it is a struggle for them to identify such things as a stop sign red-green while driving.The reason why I chose to do this project was that my father and I are both color blind I have very mild colorblindness, but my dad has a hard time identifying colors. I was interested to find out what stage of colorblindnes I was, and was surprised to find that my color blindness stage is Tritanopia.

Image result for color blindness Image result for color blindness eye


Sleep Walking – Karen

  I chose this issue because I used to sleepwalk and I wanted to know more about it. I know that sleepwalking is when you walk or do different things while you are sleeping, and it can be very dangerous. Sleeping is important for your health and I learned about it during previous years so it is interesting to know what happens during sleep. Sleepwalking affects ages from 4 years old to 13 the most.

  Typically, the sleepwalker’s eyes are open with a glassy stare as he roams the house. If you question him, he’ll be slow to respond or not respond at all. When you get him back to bed without waking him up, he usually won’t recall the event. When someone sleepwalks, they might quietly walk around their room. Or they might run or attempt to “escape.” I didn’t know that when someone sleep walks they can also do other such as driving a car and not only walking. I don’t understand how your body moves while in your sleep. People don’t remember what they did during the night while they are sleeping and you might do something bad, some solutions are to lock your door before you go to bed so you won’t walk around your house or try to leave. Doing bad things to your health can cause sleepwalking.


I picked the topic of brain freeze because it happens often and to about everyone. But so far has not been known to have a serious long term effect on the brain or body so the only damage you can cause by drinking while having a brain freeze is more pain or a longer  brainfreeze.

During this task I learnt that there isn’t exactly one true theory to how a brain freeze is caused. One theory is that you get a brain freeze from extremely cold foods or liquids touching the roof of your mouth because the mouth is very vascularized (hence why temperatures are taken in your mouth). Or (the more fancy version) when you swallow something cold and it hits your carotid artery (back of throat) where blood is fed to your brain and causes a fast change of temperature. Then the cold goes to the receptors surrounding the brain called the meninges causing them to portray it as pain. The last theory I found was that the cold changes the blood flow for a short period of time.