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Anatomy of the Eye

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The eye is one of the most sophisticated organs in our body, surely one of the most important of our five senses. Directly connected to the brain, the eye is a rotating globe which enables us to capture light, analyze it and interact with our environment.

Looking at an eye you can see a white part, the sclera or white of the eye and a coloured part. The coloured part consists of a black central circle called the pupil and the coloured part around the pupil which is referred to as the iris. The iris defines the unique colour of the eye and the pupil enlarges or narrows based on the amount of light present.

Then there are the parts of the eye that can’t be seen such as the cornea, the crystalline lens and the retina. Similar to a lens, the cornea is a highly sensitive and transparent protective membrane. Just behind the pupil there is the crystalline lens which is protected by the aqueous humor and allows light to refract. Rays of light travel through the vitreous humor to the retina, through the optical nerve, then are processed and transmitted to the brain to be translated into successive images. Vision is then formed.

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The slightest fault in the eye’s anatomy could lead to ametrias such as myopia, hyperopia or astigmatism which alter visual acuity and lead to the need for corrective lenses. Various tests exist to verify your visual acuity, many of which are found on this Website.