Raised blood pressure can affect your vision various ways. If you blood pressure is higher than it should be you will be more at risk of bleeds and blockages in the eye. A bleed in the eye is generally noticed as a black or red shaddow suddenly starting in the sight. A blockage generally results in a sudden loss of vision. Either way the eyes need to be examined as soon as possible and the GP and or eye clinic needs to be contacted soon. Major blockages can lead to macular swelling, oedema and further eye complications. Below is an eye with a central retinal vein blockage, occlusion:

If you notice a sudden vision change please call a MECS Optometrist as soon as possible.