Lo Peng-iok. / Includes questionnaire in Chinese. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 51-58). / List of tables --- p.V / List of figures --- p.VIII / List of abbreviations --- p.IX / Acknowledgments --- p.X / Abstract --- p.XI / Chapter Chapter 1 --- Introduction --- p.1 / Chapter Chapter 2 --- Literature review --- p.3 / Chapter 2.1 --- The history of myopia --- p.3 / Chapter 2.2 --- The epidemiological study of myopia --- p.4 / Chapter 2.3 --- The relationship between myopia and optical components --- p.7 / Chapter 2.4 --- The classification of myopia --- p.9 / Chapter 2.5 --- Myopia and blindness --- p.11 / Chapter Chapter 3 --- Material and methods --- p.13 / Chapter 3.1 --- Material --- p.13 / Chapter 3.2 --- Methods --- p.14 / Chapter 3.2.1 --- Questionnaire --- p.14 / Chapter 3.2.2 --- Eye examination --- p.15 / Chapter I). --- Autorefraction --- p.15 / Chapter II). --- Keratometry --- p.16 / Chapter III). --- Opthalmoscopy --- p.16 / Chapter IV). --- A-scan Biometry --- p.16 / Chapter V). --- Tonometry --- p.17 / Chapter 3.2.3 --- Data analysis --- p.17 / Chapter Chapter 4 --- Results --- p.19 / Chapter 4.1 --- The distribution of refraction --- p.19 / Chapter 4.1.1 --- The distribution of refraction among 2150 eyes of 1075 students --- p.19 / Chapter 4.1.2 --- The distribution of refraction (right eye) by sex and age --- p.20 / Chapter 4.1.3 --- The distribution of refraction (right eye) by faculty --- p.21 / Chapter 4.1.4 --- The astigmatism among 1075 freshmen --- p.22 / Chapter 4.1.5 --- The anisometropia and isometropia among 1075 freshmen --- p.22 / Chapter 4.2 --- Relationship between the ocular refraction and its optical components --- p.23 / Chapter 4.2.1 --- The results of keratometry and A-scan ultrasound measurements --- p.24 / Chapter 4.2.2 --- The distribution of the ocular components --- p.24 / Chapter 4.2.3 --- The association between the refraction and optical components --- p.25 / Chapter 4.2.4 --- The association between various optical components --- p.27 / Chapter 4.2.5 --- The association between the myopia and optical components --- p.28 / Chapter 4.3 --- "Relationship between refraction and corrected visual acuity, fundus changes and intraocular pressure" --- p.30 / Chapter 4.3.1 --- The association between refraction and corrected visual acuity --- p.30 / Chapter 4.3.2 --- The association between refraction and fundus changes --- p.31 / Chapter 4.3.3 --- The association between refraction and intraocular pressure --- p.32 / Chapter 4.4 --- Relationship between myopia and environmental factors --- p.32 / Chapter 4.4.1 --- Present myopia in relation to age at onset of myopia --- p.33 / Chapter 4.4.2 --- The Influence of nearwork on myopia in freshmen --- p.34 / Chapter 4.4.3 --- The Influence of sports on myopia in freshmen --- p.35 / Chapter 4.4.4 --- The influence of achievement on myopia --- p.36 / Chapter 4.4.5 --- "The influence of time spent in front of TV set and computer, sleeping habit on myopia" --- p.36 / Chapter 4.5 --- The relationship between myopia and family background --- p.37 / Chapter 4.5.1 --- The relation between myopia and parents' refractive status --- p.37 / Chapter 4.5.2 --- The relation between myopia and parents' education level --- p.38 / Chapter 4.5.3 --- The relation between myopia and family income --- p.38 / Chapter Chapter 5 --- Discussion --- p.40 / Chapter 5.1 --- The high prevalence and high degree of myopia in Hong Kong Chinese students --- p.40 / Chapter 5.2 --- The relationship between refraction and its optical components in Hong Kong Chinese students --- p.43 / Chapter 5.3 --- The relationship between myopia and age at onset of myopia in Hong Kong Chinese students --- p.46 / Chapter 5.4 --- The relationship between myopia and environmental factors in Hong Kong Chinese students --- p.48 / References --- p.51 / Tables --- p.59 / Figures --- p.93 / Chapter Appendix I --- Questionnaire --- p.106 / Chapter Appendix II --- An English translation of the questionnaire --- p.110