This can be caused by a number of things. You need to make a appointment with your Opthamologist (Optician) as soon as possible.
in the right eye a small black ring in vision ?
Yes, the standard barrel has A5/x7 threads, but you can order it with 98/Alpha black threads.
dogs in gneral see all black and white color
Yes, they have the same threads.
That part of the vision that is perceived by the cones of the eye. Rods detect black and white.
American Black Bears have full color vision.
b
If you buy it with 98 threads, then yes.
What would cause the center of one eyed to go black and lose the site
millipede
because you have vision problem.
rods