Euthanizing pets increasing as vet costs rise. A dog may be a man's best friend, but in a staggering economy with rising costs of veterinary care, more Americans are choosing to put their pets to sleep instead of paying for expensive treatments. At.
Cone cells, or cones, are one of three types of photoreceptor cells in the retina of the eye. They are responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light.
The fovea centralis, also commonly known as the fovea, is the section of the eyeâs retina with the highest focus.It has the highest concentration of cone photoreceptors, which are the cells in the eye that perceive color, and this high level of cones is what allows for such a sharpened focus in this part of the eye.he fovea centralis, also commonly known as the fovea, is the section of the eyeâs retina with the highest focus.