 Patients with a Fuchs endothelial dystrophy-induced corneal edema and an ODM 5 therapy recommendation prior to their inclusion will be observed in normal practice setting in this post-market clinical follow-up study. In this indication, the use of ODM 5 should extract the fluid excess in the cornea away by an osmotic effect, enabling the cornea to temporarily regain a normal state of hydration. As a consequence, the patients visual acuity, contrast perception, corneal thickness and ocular complaintssymptoms should improve. The hyaluronan in ODM 5 helps to protect and heal the cornea in case of irritation and thus, enables the cornea to regain a normal state of hydration and participates in improving the quality of vision. 