[Chinese expert consensus on the visual acuity testing for infants and preverbal children (2023)].

Abnormal visual experience in the first 3 years of life may lead to permanent visual impairment without early screening and timely intervention. It is of great clinical significance to evaluate the visual acuity of infants and preverbal children with suspected visual abnormality. However, the evaluation is difficult due to the inability of these children to express their complaints and the lack of unified standards. In order to promote the standardization of the visual acuity testing in infants and preverbal children, including the screening and follow-up examinations, a consensus has been reached by the Chinese Association for Pediatric Ophthalmology and Strabismus along with the Pediatric Ophthalmology and Strabismus Group of Chinese Ophthalmologist Association, based on the research results of evidence-based medicine.婴幼儿阶段（0~3岁）的异常视觉体验可导致视力发育异常，须及时诊断和干预，因此对可疑视力异常的婴幼儿进行视力评估具有重要的临床意义。由于婴幼儿的理解和表达能力不足，对婴幼儿进行视力评估较为困难，且缺乏统一标准。为了促进我国婴幼儿视力评估工作的开展和普及，对视力异常婴幼儿进行筛查和随访，为小儿眼科医师和儿童眼保健工作者对婴幼儿进行视力评估及给予相应诊疗提供依据和指导，中华医学会眼科学分会斜视与小儿眼科学组和中国医师协会眼科医师分会斜视与小儿眼科学组联合，以国内外研究结果为基础，经过充分讨论，针对婴幼儿视力评估的指征以及方法及分类、标准、适用对象和年龄、操作要点等，达成共识性意见。.