Correspondence: X Li, Pharmaceutical & Molecular Biotechnology Research Centre, Department of Chemical & Life Sciences, Waterford Institute of Technology, Macular Pigment Research Group, Carriganore House, W.I.T. West Campus, Carriganore, Waterford, Ireland Tel: +353 51 30 6261; Fax: +353 51 83 4046. E-mail: xue215@gmail.com In recent years, manufacturers and distributors have promoted commercially available intraocular lenses with transmittance properties that filter visible short-wavelength light on the basis of a putative photoprotective effect.