Report. VforVenture. 3 years ago. It takes 2-3 days for the sperm to meet the egg, 2-3 days for the egg to travel down the fallopian tube, 1-2 days for the fertilized egg to implant, and another 2-3 days for the level of hcg to build up enough in your system to get a positive result on a pregnancy test.
Or, it can be a symptom of a stroke that's already occurred. Vision complications due to a stroke depend on where the stroke occurs. The majority of visual processing occurs in the occipital lobe, in the back of the brain. Most strokes affect one side of the brain. If the right occipital lobe is injured, the left field of vision in each eye may be affected. A stroke that affects the left occipital lobe may disturb the right field of vision in each eye. Rarely, both sides of the brain are affected, but this can result in blindness.
Stroke is one of the most common causes of adult disability. Every year an estimated 152,000 strokes occur in the UK and about half of survivors will have a disability. Your ability to see involves your brain as well as your eyes so stroke related vision problems can be very complex to understand and treat.