When did the eyes develop?

eyes appear in a fossil record about 540 million years ago, at the dawn of the Cambrian period. On some television programs on paleontology, the development of the eye is quoted as the cause of the Cambrian explosion, the rapid diversification of animals of animals during the Cambrian period, but that's just speculation. Numerous eyes with eyes, including trilobites, Conodonts and a large predator similar to shrimp anomalocaris , appear in the fossil beds of Cambrian.

Eyes are sometimes cited as an example of an organ that is too complex to develop gradually and must be created by a designer. Paleontologists, however, have since demonstrated how the eye could develop gradually from humble origin. Simple eye organs can be found in organisms such as planarians and numerous unicellular organisms, including Euglen, which has a light sensitive patch.

eye development steps were roughly as follows:

1) The area of ​​photocitative cells.
2) PHOTOCITATION CULTS IN THE DEPARTMENT, which allows sensitivity to direction.
3) The spherical chamber filled with water with an opening, also known as a hole located in Nautilus.
4) Transparent humor fills the chamber, which is then sealed from the outside.
5) Clear development of the lens and cornea.
6) Development of iris and more sophisticated lenses and cornea.

The eye is one of the oldest evolutionary developments and has appeared before the development of many modern phyles. The eye has evolved too long after the first shells, another very simple adaptation.