Can preclampsia cause papilledema when your pregnant? and does having papilledema cause problems during delivery?

Yes!: Preeclampsia can cause papilledema in pregnancy. Usually preeclampsia with papilledema is severe, and requires delivery. But it shouldn't affect the mode of delivery (cesarean versus vaginal).

Papilledema: Preeclampsia is defined by the development of new hypertension greater than 140/90 mm hg and new proteinuria exceeding 300 mg/24 hr after 20 weeks gestation. Papilledema (swollen optic disc which can be seen on eye exam) can occur and can be a factor for early delivery though does not by itself create a problem for delivery.