- Amblyopia is a childhood visual development disorder in which vision does not develop normally because visual information from one or both eyes is not sufficiently utilized by the brain, even though the eyes appear normal externally.
- Key related factors include strabismus, refractive errors including differences in focus between the two eyes, and conditions that obstruct the line of sight, such as cataracts.
- During the period of visual development, if the image from one eye is persistently blurry or if the alignment of the two eyes is misaligned, the brain may use the input from that eye less, which can limit vision development.
- Typical features include lower vision in one eye compared to the other, the potential presence of strabismus or refractive errors, and the eyes appearing normal externally.
- The risk and prognosis may vary depending on the cause, onset time, involvement of one or both eyes, the degree of refractive error, the stage of visual development, the timing of treatment initiation, and treatment adherence.
- Children may not complain of vision loss themselves, so it may be discovered during regular vision screenings; if left untreated, limited visual development may persist for a long time.
- Diagnosis is made by comprehensively evaluating age-appropriate visual acuity measurement, eye alignment and motility assessment, refractive status, and diseases obstructing the fundus and visual axis.
- Do not diagnose amblyopia based solely on vision difference; other causes such as refractive error, strabismus, ocular diseases, and rare neurological causes must also be checked.
- The core of management is to correct the underlying disease while helping to use the eye with weaker vision, and to track changes in vision and eye alignment.
- In clinical management, refractive errors are corrected with glasses, etc., and if necessary, the use of the weaker eye is promoted by patching the good eye or administering atropine eye drops; surgery may be considered depending on the cause.