Swelling of the feet and ankles can occur as a result of conditions involving the local extremities as well as systemic conditions (diseases and conditions that affect the entire body). Localized processes such as injuries and infections may lead to a swollen foot and/or ankle only on the involved side. Swelling of the ankle on one side is often a result of sprains or strains.
Trauma. A dilated pupil may be caused by any kind of trauma such as a damage of the nerves controlling the activities of the iris, an injury to the head or the eye, and iris sphincter. All these factors highly affect the consensual reactivity of the eyes to light and cause fixed and dilated pupils after trauma.ervous Problems. The neuropathic cause behind dilation of the pupils is the sympathetic stimulation of Î±1 adrenergic receptors involving the radial muscle and the parasympathetic stimulation involving the circular iris muscle cause the pupils to dilate.
In order to receive more light from the world around us, the pupils of our eyes get dilated. However, this can also be caused by numerous other things. Therefore, pupil dilation can be triggered by an underlying health problem. The light receptor cells of our eyes are located in the back of our eyeballs. Thus, our pupils get dilated and allow the light to enter the eyes, exposing the receptor cells to it.