Understand the basics of the earnings per share ratio and how this important financial metric is calculated in Excel and ... Read Answer >>. The amount of shares outstanding in a company will often change due to a company issuing new shares, repurchasing and retiring ... Read Answer >>.
The duration of pupil dilation depends on the type and concentration of the drug used. Generally, dilation lasts three to six hours. Sometimes, the dilation can extend up to 24 hours if a more concentrated drug is used. Atropine is a common eye drop used to dilate pupils during eye examination. Eye color can also determine the duration of pupil dilation.
Epilepsy and stroke can also cause your pupils to dilate when they would not normally do this. This symptom will usually dissipate after a period of time, but it does signal something serious. Eye doctors can dilate eyes during an exam with eye drops. Doctors will use mydiatric drops during the exam. The eye doctors will be looking for signs of damage on the back of the eye. They can also spot early signs of multiple sclerosis, kidney disease, and high blood pressure.