Reply to I Cozma et al

Abstract

MethodsAll cases of newly diagnosed keratoconus patients seen in the Ophthalmology Department between September 1997 and December 2001 were analysed retrospectively using the videokeratography database. This included the vast majority of cases of keratoconus seen in the department during the analysed periodFthe clinical diagnosis on presentation was made by an ophthalmologist.BRI is the only ophthalmology service in the city of Bradford (catchment population of 470 000) and receives all GP or optician (via GP) referrals of this type.According to Census 2001, the ethnic background of population in Bradford is white 93.48%, Asian 4.49%, black 0.5%, Chinese 0.25%, and others 1.18%. The ethnic groups in the Asian population in Bradford are Pakistani (87%), Indian (7.3%), and Bangladeshi (5.7%).The proportion of population other than white and Asian (ie 1.93%) was considered negligible for the purpose of this study.Normally distributed data were analysed using Student's t-test for unpaired groups of patients. A significance level of o5% was chosen in all tests. Data are presented as mean7standard deviation.

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