Cerebral/Cortical Visual Impairment (CVI) is a neurological visual disorder. Vision loss or impairment due to brain injury or disease can occur at any point in the life-span. CVI can be found in children who function at levels equivalent to typical peers as well as in children with mild to severe disability.
For other uses, see Serengeti (disambiguation). Serengeti Eyewear is a high-end sunglasses designer brand owned by Bushnell Corporation. Their main focus is eye protection, of which the company researches and develops state of the art technology such as photochromic lenses, polarized lenses, spectral control, among other. 1 Overview.
Serengeti National Park is undoubtedly the best-known wildlife sanctuary in the world, unequalled for its natural beauty and scientific value. With more than two million wildebeest, half a million Thomson's gazelle, and a quarter of a million zebra, it has the greatest concentration of plains game in Africa.ith the growing awareness of the need for conservation, it was expanded and upgraded to a National Park in 1951. Eight years later the Ngorongoro Conservation Area was established in the south-east as a separate unit. Travellers are not the only ones who now flock to see the animals and birds of the Serengeti.