Objective To understand caregivers′ knowledge of fear of the dark in children receiving ophthalmic surgeries and willingness to receive intervention, and to provide a basis for effective intervention and standardized management. Methods A one-to-one questionnaire survey, which sought to investigate caregivers′ knowledge of fear of the dark in children and willingness to receive intervention, was conducted in 282 caregivers of children receiving ophthalmic surgeries. Results The caregivers lacked the knowledge of fear of the dark in children:64.5% and 70.6% of the caregivers didn′t know the causes and preventive measures of children′s fear of the dark respectively；62.8% of them thought it was essential to give the children darkness adaptation training; 72.0% thought training was good for nursing quality and practice; 84.4% were willing to have their children complete darkness adaptation training, among which, 85.8% of them opted for scene-based educational games, over 73.4% chose to do the training which involved nurses, caregivers, and children together, for 5 to 10 minutes the day before the surgery. Conclusion Caregivers had poor knowledge of fear of the dark in children, but they showed willingness to join in interventional training. Feasible, scientific interventional measures and management which actively involves caregivers should be carried out, in an effort to improve children′s sense of safety perioperatively.