Evaluation of Choroidal Thickness and Volume during the Third Trimester of Pregnancy using Enhanced Depth Imaging Optical Coherence Tomography: A Pilot Study.

Background: During pregnancy the maternal choroid is exposed to the multiple haemodynamic and hormonal alterations inherent to this physiological condition. These changes may influence choroidal anatomy. In this study a quantitative assessment of overall choroidal structure is performed, by constructing a 3-dimensional topographic map of this vascular bed.