The Eyes are the Organs that Enable the Power of Vision

Sensation and Perception
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Abstract
Sensation and perception are always used interchangeably, thereby ending up being confused .Inasmuch as this is the case, and there is a huge difference. Understanding of the underlying differences apart from the difference in definition would be important in knowing how the body works with the two. All the sensory organs and their respective functions are also going to be addressed to shed further light in the psychological interpretation of the two.
Introduction
Psychology and biology tend to cross paths in numerous instances. This doesn’t come as a surprise, since on is basically a kind of ‘outgrowth’ of the other. In this case, psychology is the outgrowth of the former. With this in mind, there are terms likely to be confused .For example, perception and sensation. These two words are in most cases, used interchangeably without to mean the same thin, under normal ordinary circumstances. A mention of either of these two words will just ring to matters concerning the senses. However, in psychology, there is a distinct difference between these two terms, when looked at very keenly. To understand the difference between these two, it would be important to look at their distinct definitions.
Sensation is the rather passive process through which the body acquires information from the external surrounding and relays it to the brain. Perception on the other hand, is the active process by which the messages relayed to the brain are deciphered in order for appropriate response to be taken. From this definition, it can be seen that there are very distinct differences between sensation and perception. Sensation, even as the name suggests, basically entails the use of the respective sensory organs; the nose, ears, tongue, eyes and skin, to detect a change in the environmental stimuli and send information packets to the brain through the sensory nerves. Perception on the other hand, is the manner in which these messages sent from the sensory organs, are interpreted.
The other interpretation here is that sensation is a feeling whereas perception is a thought. From this immediate difference, sensation is more physical and one that can easily be proved, whereas perception cannot. Perception isn’t as fixed a fact as sensation. Perception is purely subjective. It depends on the experience and hence conditioning of an individual. How an individual has continuously interpreted his or her senses over time is what defines perception. Additionally, one’s expectations and attention play a huge factor in perception. Different people can have the same sensation but different perceptions. This paper is going to look at the body in relation to perception and sensation.
* Vision.
The eyes are the organs that enable the power of vision.
Mechanism of Vision.
For body to be seen by the eye, light needs to bounce off it and to the eye. Once the light reaches the eye, it enters through the cornea, goes through the aqueous humor, then lens, the vitreous humor and onto the lens. As light passes through these parts, it undergoes multiple refraction .The purpose of this multiple refractions as the light goes th...