Meaning of Dunham. Celtic name. In Celtic, the name Dunham means - Dark skinned fighter.. Other origins for the name Dunham include - Celtic, Irish.The name Dunham is most often used as a boy name or male name. Celtic Name Meaning - Dark skinned fighter. Origin - Celtic.
Additional structures, not directly associated with vision, are found as outgrowths of the retina in some vertebrate groups. In birds, the pecten is a vascular structure of complex shape that projects from the retina into the vitreous humour; it supplies oxygen and nutrients to the eye, and may also aid in vision.
Structure. The retina is a multi-layered sensory tissue that lines the back of the eye. It is approximately 0.5mm thick, and consists of an outer pigmented layer of specialised epithelial cells and an inner neural portion.The middle of the retina is called the macula, and the centre of the macula contains the fovea.tructure. The retina is a multi-layered sensory tissue that lines the back of the eye. It is approximately 0.5mm thick, and consists of an outer pigmented layer of specialised epithelial cells and an inner neural portion.