Funding
RETINA
H.M.A. Feenstra was supported by the Blindenhulp Fellowship from Stichting Blindenhulp (The Hague, the Netherlands). This research was also supported by the following foundations: Stichting Macula Fonds; Retina Nederland Onderzoek Fonds; Stichting Blinden-Penning; Algemene Nederlandse Vereniging ter Voorkoming van Blindheid; Landelijke Stichting voor Blinden en Slechtzienden, which contributed through UitZicht (Delft, the Netherlands); Rotterdamse Stichting Blindenbelangen (Rotterdam, the Netherlands); Stichting Leids Oogheelkundig Ondersteuningsfonds (Leiden, the Netherlands); Stichting Ooglijders (Rotterdam, the Netherlands); the Gisela Thier Fellowship of Leiden University, Leiden, the Netherlands (CJFB); and the Netherlands Organization for Scientific Research (VENI grant to CJFB).