The Eye is The Most Complicated Sense Organ

Eye; Overview of the Most Complex Sensory Organ - Introduction to the Subject A. Sensory organs are the result of our continued biological evolution, just like other organs, so that they can meet our needs It is made to. B. The electromagnetic spectrum and the electromagnetic spectrum that we can see contain a wide range of energy domains, but we can see a small part of the spectrum, you can see the spectrum . Figure 1 shows that the visible region is between the ultraviolet region and the infrared region.

Vision is mainly sensory organ - eye. The complexity of the structure of the eye depends on the needs of the creature. Human eyes are one of the most complicated structures on the planet, and many components are required to realize advanced visual functions. There are three main levels in the eye. All vision is based on the perception of electromagnetic waves. These rays pass through the cornea in the form of light and the cornea focuses the light as it enters the eye through the pupil (the black opening in front of you). The pupil acts as a gate keeper, letting as much light as possible to make the image look correct. The pigmented area around the pupil is the iris. In addition to providing a human eye color, the iris can also serve as an iris for the pupil or sphincter. Two layers of iris muscle contract or expand the pupil to change the amount of light entering the eye

The eye is a visual organ - it converts light into electrical signals transmitted by neurons. The shape of the eye is a slightly asymmetrical sphere with a diameter of about 25 mm. The visible front of the eye consists of the iris, the cornea, the pupil, the sclera (white part), and the conjunctiva (covering the transparent layer on the front of the eyes, excluding the cornea). The cornea is in front of you. It is a transparent layer (no blood vessel) with a thickness of about 0.6 mm. The cornea represents the most powerful part of the refractive power of the eye. It provides approximately 70% of the power of the optics of the eye. The refractive power of the cornea is about 40 diopters. The refractive index of the cornea is about 1.376, and the majority of refraction is at the corneal-air interface. Due to the constant refractive power, the focus is fixed