This stage is followed by decreased vision in bright light conditions due to the death of cone cells in the retina. (optigen.com)
The puppies with this disease often show behavioral signs associated with decreased vision as early as 12 weeks of age and may become completely blind by 1 to 2 years of age. (chowhealth.org)
The helmet was another challenge because it was lined with a thick mesh and decreased my vision by about 70 %. (mediamikes.com)