1. 11000 Seven-yearsupporting the idea that refractions on average olds. First report of the National Child Development Survey. become less hypermetropic over the first year of life (although this does not necessarily hold for individual refractions);NR, Kellmer-Pringle M.L.Butler; R, Davie,1966
2. Epidemiology of strabismus;Graham, P.A.;BrJ Ophthalmol,1974
3. Screening of pre-school children for While myopia over -3 D is rather rare in this age ocular anomalies;Oliver, M.; Nawratzki, I.;BrJ Ophthalmol,1971
4. Vision screening in 4 year olds;Kohler, L.; Stigmar, G.;Acta PaediatrScand,1973
5. Amblyopia: the need for a new approach?;Ingram, R.M.;Br J Ophthalmol,1979