how many eyes does a fly have?

Answer 1

tons, about 2000

Answer 2

HI
thats an interesting one! technically the eyes of fly are not the same as our two eyes.
You have got some good answers... but just to add...

eyes of the fly are compound eyes and they have 2 bundles of ommatidia (light sensing cells) [which look like 2 eyes]

each ommatidium is usually thought of as a cell rather than an eye. and this allows the fly to see that many images of the same view (which it's brain will interpret and form 1 image)

And this image is damn good!
guess why respond so well! (you may be interested to know: they have these pressure sensing areas so when you are trying to whack them with a newspaper the air pressure difference alerts them and hence they fly away!

Answer 3

no way that an fly could fit in your eye it probably just went in ur eye and thrn flew back out trust me it happens to me all the time and it just fly's away. and if u can see that means the fly is not there so there is no point of visiting the doctor

Answer 4

100

Answer 5

It has two compound eyes.

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(Except from: "Insect Flight: Evolution")


Compound Eyes

One of the very earliest identifying features of insects is the compound eye, found only among the insects, the centipedes, the crustaceans, and the horseshoe crabs. The compound eye is composed a large number (generally a few hundred to thousands) of facets, each of which faces a slightly different direction than its neighbours. Each facet records a general impression of the colour and intensity of the light which comes from the direction in which it faces, but does not produce a complete image. Every facet is bound by is own optic nerve to the insect's brain and contributes one spot of light to the image, much as the pixels (picture elements) in the monitor in front of you are doing now or tiles do in a mosaic. The quality of the picture which an insect sees is determined by the resolution (number of facets) of its eyes, as is the case with a computer monitor. Shapes are much more clearly defined on a 1024x768-pixel monitor than are equal size shapes on a 320x240-pixel monitor. Most insects can see fairly well to a few feet, but not much beyond that. The farther away that an object is, the fewer facets that it covers and the poorer the resolution of the object. The compound eye system does not require and cannot incorporate a mechanism for focusing. The clarity or fuzziness of the image is determined by the number of facets, which is fixed, in the eye and by the insects distance from the object. The sequence of bee head below show, from left to right, the way a human sees a bee's head, the way a bee might see the same head from a short distance away, and the way a bee might see it from farther away.

http://park.org/Canada/Museum/insects/evolution/evolution.html

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(Excerpt from Wikipedia entry: "Compound eye.")


A compound eye is a visual organ found in arthropods such as insects and crustaceans. It consists of one to thousands of ommatidia which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color. The image perceived by the arthropod is a combination of inputs from the numerous ommatidia, which are oriented to point in slightly different directions. Compared with single-aperture eyes, compound eyes have poor image resolution; however, they possess a very large view angle and the ability to detect fast movement and, in some cases, the polarization of light.

http://en.wikipedia.org/wiki/Compound_eye

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Answer 6

the fly has two eyes, one on each side of its head. each eye is a compound eye meaning the same facet is repeated 800 times (for fruit flies). each facet is called an ommatidia or simple eye. each ommatidia is composed of a set of photoreceptor neurons that detects light.

Answer 7

A compound eye is a visual organ found in certain arthropods such as insects and crustaceans. It consists of between 12 and 1,000 ommatidia which are tiny sensors that distinguish between brightness and darkness, and sometimes can detect color

Answer 8

1983

Answer 9

2 it different chambers that act as more eyes, that view in all directions

Answer 10

a fly has eight eyes

Answer 11

they have two eyes, but when they look through them, they see the same image many times!