Vision: reply: Myopia and ambient night-time lighting
Abstract
Quinn et al. reply. In not being able to find the strong association reported by us of childhood myopia with night-time ambient lighting before age 2 years, Zadnik et al. and Gwiazda et al. ascribe our results to a tendency of myopic parents to illuminate their children's rooms at night. Family studies of myopia typically have difficulty separating environmental from genetic factors, however, as sib-sib correlations for myopia decrease with increasing age difference and within-family refractive similarities decrease with adjustment for the `classic' environmental factors of education and close work. Thus, shared inter-generational behaviour (such as use of night lighting) cannot be excluded a priori as contributing to any familial association for myopia.
- Publication:
-
Nature
- Pub Date:
- March 2000
- DOI:
- 10.1038/35004665
- Bibcode:
- 2000Natur.404..144S