1. National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, Ireland; the
2. National Ophthalmic Pathology Laboratory and Research Foundation and the
3. Macular Pigment Research Group, Department of Chemical and Life Sciences, Waterford Institute of Technology, Waterford, Ireland.
4. Department of Ophthalmology and Research Foundation, Royal Victoria Eye and Ear Hospital, Adelaide Road, Dublin, Ireland; and the