Table 1

Number of subjects with myopia as a function of night-time light exposure during first 2 years of life

ADarknessNight lightRoom light
Subject not myopic22202
Subject myopic51234
BDarkness at nightLight exposure at night
In (B) the data from the night light and room light groups are pooled. Note that while not statistically significant, myopia was more common in subjects who slept in darkness during infancy.
Subject not myopic2222
Subject myopic5127