Core Viewpoint - Amblyopia, commonly known as "lazy eye," is a developmental disorder in the brain's visual cortex caused by abnormal visual experiences during critical periods of visual development in children, affecting approximately 2%-5% of children globally [2]. Group 1: Causes of Amblyopia - Refractive amblyopia occurs when there is a significant difference in refractive error between the two eyes, typically exceeding 150 degrees, leading to amblyopia in the eye with higher refractive error [2]. - Strabismic amblyopia arises when the eyes cannot align on the same target, causing the brain to suppress signals from the misaligned eye to avoid double vision, resulting in functional degradation [2]. - Deprivation amblyopia happens when congenital cataracts or other conditions block light from entering the eye during the critical visual development period, depriving visual stimulation and leading to amblyopia [2]. Group 2: Detection of Amblyopia - Amblyopia is challenging to detect as children often do not realize they have poor vision, having adapted to their visual patterns from birth [3]. - Parents should be vigilant for symptoms such as squinting, tilting the head to see, difficulty in reading and writing, clumsiness, strong resistance to covering one eye, and abnormal eye positioning or white pupils [4]. Group 3: Impact of Amblyopia - The effects of amblyopia extend beyond visual acuity, with studies indicating reduced depth perception and impaired stereopsis, particularly affecting activities requiring precise distance judgment [5]. - Untreated amblyopia can impact academic performance, career choices (e.g., limitations for pilots and surgeons), and may lead to psychological stress due to visible abnormalities like strabismus [5]. Group 4: Treatment of Amblyopia - The core principle of amblyopia treatment is "forced use," encouraging the lazy eye to work again [6]. - Optical correction through appropriate glasses or contact lenses is fundamental, providing a clear visual foundation for the brain [7]. - Occlusion therapy involves covering the dominant eye for 2-6 hours daily to compel the amblyopic eye to function, recognized as the most evidence-based and classic treatment method [7]. - Penalization therapy uses drugs or special lenses to blur the dominant eye's vision, suitable for older or psychologically sensitive children [7]. - Visual training, including activities like bead threading and tracing, can be enhanced with modern virtual reality technology to gamify the treatment process [7].