Answer:
Explanation:
The retina is layer of tissues that surrounds the surface of the back of the eyeball. It consists of several layers that consists of photoreceptors which detects the color and intensity of light. The retina is affected by the blood pressure levels.
When the blood pressure becomes high the retina blood vessel may become thick. This may cause the blood vessels to become narrow, this restricts the flow of blood reaching the retina.
The high blood pressure may cause damage to the retinal blood vessels, as it restricts the function of retina. The high blood pressure inside the optic nerve may cause the problem of vision. This situation is called as hypersentive retinopathy.
