title: Risk factor analysis of 167 patients with high myopia.
abstract: OBJECTIVE
  To analyze the risk factors of age, sex, course, best corrected visual acuity (BCVA), diopter and fundus features of high myopes with progressive high myopia.
  
  
  METHODS
  A total of 167 patients with high myopes were categorized into four groups: group 1, age 10-29 years; group 2, age 30-49 years; group 3, age 50-69 years and group 4, age 70-89 years. The refractive errors of all patients were measured without cycloplegia with an autorefractometer. Data of the spherical equivalent (SE) of the refractive errors in diopters (D) and fundus examined by direct ophthalmoscope were used in statistical analysis.
  
  
  RESULTS
  The number of female was statistically larger than that of male (P<0.01), also the disease course was correlated to the age. The visual acuity of high myopes significantly decreased as they grew older including the higher incidence of lacquer cracker, submacular hemorrhage, Fuchs spots, chorioretinal atrophy.
  
  
  CONCLUSIONS
  Female maybe a risk factor of high myopia, advanced age is an important factor of visual acuity decreased. High myopes ought to be treated early to delay the progress of myopia and development of macular degeneration.
authors.affiliation: Department of Ophthalmology, the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, Sichuan Province, China.
authors.forename: Ya
authors.initials: Y
authors.lastname: Mo
authors.forename: Ming-Fang
authors.initials: MF
authors.lastname: Wang
authors.forename: Lu-Lu
authors.initials: LL
authors.lastname: Zhou