Amblyopia ("Lazy Eye")

Amblyopia, commonly known as lazy eye, is a condition that affects the vision system in children and sometimes adults. It occurs when one eye does not develop normal vision during early childhood, leading to poor or blurry vision in that eye. The brain favors the other eye, which can cause the weaker eye to have reduced visual sharpness. This condition involves the eye and brain connection, specifically how the brain processes images from each eye. If untreated, it can lead to permanent vision loss in the affected eye. The main health impact is difficulty seeing clearly with one eye, which can affect depth perception and overall visual function. Early detection is important to prevent long-term vision problems.

Amblyopia is a neurodevelopmental disorder characterized by decreased visual acuity in one or both eyes due to abnormal visual experience during the critical period of visual development. The core pathology involves disrupted cortical visual processing caused by conditions such as strabismus, anisometropia, or visual deprivation (e.g., cataract). This leads to suppression of input from the affected eye and failure to develop normal binocular vision. It is the most common cause of monocular visual impairment in children and can result in permanent vision loss if not treated early. The condition reflects a failure of the visual cortex to properly integrate signals from both eyes, rather than an intrinsic ocular abnormality. Clinical significance includes impaired depth perception and increased risk of vision loss in the better-seeing eye if the amblyopic eye is injured.