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  • Disease

    Chalazion

    The eye is the organ of sight, a nearly spherical hollow globe filled with fluids (humors). The outer layer or tunic (sclera, or white, and cornea) is fibrous and protective. The middle tunic layer (choroid, ciliary body and the iris) is vascular. The innermost layer (the retina) is nervous or sensory. The fluids in the eye are divided by the lens into the vitreous humor (behind the lens) and the aqueous humor (in front of the lens). The lens itself is flexible and suspended by ligaments which allow it to change shape to focus light on the retina, which is composed of sensory neurons.

    A chalazion is a small bump in the eyelid caused by a blockage of a tiny oil gland.

  • Disease

    Conjunctivitis

    Conjunctivitis is swelling (inflammation) or infection of the membrane lining the eyelids ().

  • Disease

    Corneal injury

    The cornea is the crystal clear portion of the surface of the eye that lets light enter.  The cornea is well supplied with nerve endings which is why some people can never get used to wearing contacts.

    Corneal injury describes an injury to the cornea. The cornea is the crystal clear (transparent) tissue covering the front of the eye. It works with the lens of the eye to focus images on the retina.

  • Disease

    Corneal ulcers and infections

    The eye is the organ of sight, a nearly spherical hollow globe filled with fluids (humors). The outer layer or tunic (sclera, or white, and cornea) is fibrous and protective. The middle tunic layer (choroid, ciliary body and the iris) is vascular. The innermost layer (the retina) is nervous or sensory. The fluids in the eye are divided by the lens into the vitreous humor (behind the lens) and the aqueous humor (in front of the lens). The lens itself is flexible and suspended by ligaments which allow it to change shape to focus light on the retina, which is composed of sensory neurons.

    The cornea is the clear (transparent) tissue at the front of the eye. A corneal ulcer is an or open sore in the outer layer of the cornea. It is often caused by infection.

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