The Changing Profile of Astigmatism in Childhood: The NICER Study.Investigative Ophthalmology and Visual ScienceDate: (2015) Comparison of Refractive Error Measures by the IRX3 Aberrometer and Autorefraction.Optometry and Vision ScienceDate: (2014) Higher order ocular aberrations and their relation to refractive error and ocular biometry in children.Investigative Ophthalmology & Visual ScienceDate: (2014) An investigation into the validity of self-reported classification of refractive errorOphthalmic and Physiological OpticsDate: (2014) A Prospective Study of Spherical Refractive Error and Ocular Components Among Northern Irish Schoolchildren (The NICER Study)Investigative Ophthalmology & Visual ScienceDate: (2013)