In Brief:
A total of 60 newly hatched white leghorn chicks were all pinealectomized and divided equally into 3 study groups of no visual impairment, left-sided blindness, and right-sided blindness. General scoliosis incidence was 60%, not different among the groups. Laterality of the curves was significantly different (P = 0.045). Visually impaired groups had left thoracic curves almost as frequently as the right, whereas in the control group, thoracic curves were predominantly right sided. The average magnitude was 30.47° 19.32°, not significantly different among the groups.
