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Colour Blindness and Colour Vision Deficiencies

Colour blindness and colour vision deficiencies - Written by Dr. Amanda Douglass, B Optom, GCUT, Ph.D., FHEA. What is colour vision deficiency? Colour vision deficiency, often referred to as “colour blindness”, refers to the collection of disorders that cause the inability to discriminate between different colours. This can result in...

Cataract

Cataract - Written by Purrven Bajjaj, B Optom, MSc Clinical Optom. What is a cataract? A cataract occurs when an opaque or cloudy area develops in the normally clear lens (responsible for the focusing mechanism) of the eye. This cloudy area scatters and blocks the light as it passes through...

Astigmatism

Astigmatism - Written by Purrven Bajjaj, B Optom, MSc Clinical Optom. What is astigmatism? Astigmatism is a type of refractive error that occurs when the cornea (transparent thin layer that covers the front portion of the eye) or the lens (responsible for the focusing mechanism of the eye, allowing clear...

Open angle glaucoma

Glaucoma - Written by Dr. Eamonn Fahy, MB, BCh, BAO, Ph.D. What is glaucoma? Glaucoma is an eye condition in which the optic nerve (essential bundle of nerve cells that carries visual signals from the eye to the brain) is damaged and peripheral vision is affected. In the early stages...

Pinguecula and Pterygium

Pinguecula and pterygium - Written by Dr Alexis Ceecee Britten-Jones, B Optom (Hons), PhD. What is a pinguecula and a pterygium? A pinguecula is a yellow-white growth on the conjunctiva, the clear tissue that covers the white part of the eye. A pinguecula usually grows near the border between the...

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