Tonus of the ciliary muscle during sleep.
D001082:Aqueous Humor / Q000502:physiology; D002540:Cerebral Cortex / Q000502:physiology; D002648:Child; D002675:Child, Preschool; D002924:Ciliary Body; D005260:Female; D006801:Humans; D008297:Male; D008636:Mesencephalon / Q000502:physiology; D009130:Muscle, Smooth / Q000502:physiology*; D009184:Mydriatics; D009887:Ophthalmoscopy; D012029:Refraction, Ocular; D012160:Retina; D012890:Sleep; D014851:Wakefulness
D009184:Mydriatics