Add Yahoo as a preferred source to see more of our stories on Google. In preparation for the birth of your baby, your cervix effaces (thins and stretches) and dilates (opens) so your baby can fit ...

Eye dilation refers to a widening of the pupils. When doctors dilate the pupils during an eye exam, it typically lasts between 4 and 24 hours. Doctors sometimes use eye dilation drops to dilate a ...