How the Eye Works?

How our Eye works

Our human vision is a complicated process that can be generally categorized into the accommodation system and the visual-neurosystem.

Visual Accomodative System & the Accomodative Process

Broadly speaking, the accommodation system consist of our cornea, optical lense, ciliary bodies.

When we focus at a distant object, our eyes ciliary muscles will be completely relaxed thereby stretching the lens and making it thin. In a relaxed state, our eyes ciliary bodies are relaxed, with the optical lens flat and broad, thus projecting lights from distant images nicely on the retina. That Ąs the reason why we often say, Relax your eyes by seeing far.

When we focus at a near object, our eye ciliary muscles are in a tense state thereby pushing the lens and making it fat. This is common known as accommodation. Thats the reason why our eyes feel tried after perform near sight activities such as using the computers, reading a book or watching TV; our ciliary body tenses forward. Wherelse our eyes feel completely relaxed when engaging in outdoor activity.

This process of tensing and relaxing of the ciliary body in the visual process when seeing near or far object is known as the accommodation.

Visual Neuro-System

The visual neuro-system can be generally known to be made up of the retina, optic nerves and the visual cerebal cortex in the brain. When light falls on our retina, the rods and cons reacts and send a small electric impulse to our visual cerebral cortex (brains), this allowing us to see.

Good Vision

Good vision requires both the accommodative and neuro systems to function well. In the visual process, both systems complement each other and at the same time inhibit each other. If the accommodative system is dysfunctional, it will result in visual fatigue, accommodative myopia or long-sightedness. If the retina cells, optic nerves and visual cerebral cortex do not function properly, it may lead to amblyopia. Myopia, hyperopia or weak accommodative system may also lead to amblyopia, where mild myopia is sometimes also known as neurological myopia. And similarly, the amblyopic eye may also affect the proper function of the accommodative system. Hence, to have good vision, the proper functioning of both the accommodative and the neuro systems has to be maintained.