answersLogoWhite

0

Our eyes have a blind spot for a very good reason. On the back of our eye, the retina is the stuff that detects the light. All the information that the retina picks up is sent to the brain through the optic nerve. The only problem is that the optic nerve needs a way to get out of the eye. The place where it leaves is where we have our blind spot. Since we have 2 eyes that can move around, we don't notice the blind spot often.

Here's an interesting way to see your blind spot. First, take a piece of paper and draw 2 small dots on it. Cover one of your eyes. Hold the paper so the dots are on the same level (parallel to the ground). Stare at one dot and slowly move the paper towards and away from you. You will see that the other dot will disappear. That is the dot in on your blind spot and your other eye cannot see it. p.s. You may wonder why the nerves go into the eye and then need a hole to come back out as a bundle in the optic nerve. Why not just head straight back out, and bundle up behind the eye, with no hole? For that, there's no good reason. It's an accident of evolution, where things happened to go wrong and then couldn't get fixed in small evolutionary steps. Squids and octopuses happened to get it right, and have no blind spots. Mike W.

User Avatar

Wiki User

7y ago

What else can I help you with?

Related Questions

What causes the blind spot and why do you generally not notice it?

The blind spot, or scotoma, is caused by the absence of photoreceptors (rods and cones) in the area of the retina where the optic nerve exits the eye. This results in a small region where no visual information is detected. Generally, people do not notice the blind spot because the brain fills in the missing information based on surrounding visual cues and the input from the other eye, creating a seamless perception of the visual field. Additionally, the blind spot is located in the periphery of our vision, where we are less likely to focus directly.


What is the blind spot of a car driver?

Technically speaking the blind spot is where a driver is unable to see. Generally the blind spot is where the vehicle's frame prohibits the driver from seeing while driving normally. To look into the blind spots, drivers will have to lean forward or backward to see if there are any vehicles or pedestrians in their blind spot.


Why do cars have a blind spot?

The blind spot as you call it. Is generally cured by proper set up of your mirrors and also adding small covex mirrors externally.


What causes your blind spot?

At the small spot in each eye where the optic nerve exits the eye, they are no light receptors and therefore no vision. The blind spots are to the outer sides of the field of vision and therefore less critical than if they were close to the center. Also, the blind spot in each eye is compensated for by the other eye for those who have two intact eyes.


What do you do if you are in another drivers blind spot?

Get out of their blind spot...


What is the blind spot why is it called this?

a blind spot is when someone stares at the light and it makes a spot in there eye that makes them blind.they call it a blind spot because it makes you blind and it makes a spot in your eye.


When was The Blind Spot created?

The Blind Spot was created in 1921.


What degree of angle the Blind spot in a vehicle has?

the degree where the blind spot is.


Do flies have a blind spot?

The site where the optic nerve adjoins the retina could be considered a blind spot, as the retina does not have the densely packed comes and rods at this location. We do not perceive this because igur brain melds the information from other parts of the retina as well as information from the other eye, effectively filling any 'blind spots.' So, for all practical purposes the blind spots aren't blind in the sense we generally associate with the notion of ' blind spot.' For example, the driver's side-view mirror has a blind spot that is really blind.


When was Blind Spot - Homeland - created?

Blind Spot - Homeland - was created on 2011-10-30.


What are the release dates for Blind Spot - 2003?

Blind Spot - 2003 was released on: USA: 2003


What is the function Blind Spot?

The blind spot does not have or serve a function. The blind spot is cause by a lack of receptors in the location where a person's optic nerve and blood vessels leave the eye.