Fig. 1From: Additive effects of narrowband light and optical defocus on chick eye growth and refractionNormalized spectral transmittance of three types of lightings used for chick rearing. Red lighting had a sharp peak at 634 ± 15 nm and blue lighting at 451 ± 15 nm. White lighting had a broad spectrum with a high peak at 586 nm and a lower peak at 443 nmBack to article page