deprivation amblyopia
Form of amblyopia caused by visual deprivation during critical period of development due to media opacity or severe ptosis.
Full Definition
Deprivation amblyopia, also known as stimulus-deprivation amblyopia or form-vision deprivation amblyopia, occurs when clear visual input is prevented from reaching the retina during the critical period of visual development. Common causes include dense cataracts, severe ptosis, corneal opacity, or vitreous hemorrhage. Unlike other forms of amblyopia, deprivation amblyopia can develop rapidly and may be irreversible if the deprivation is not promptly addressed. The severity depends on the timing, duration, and density of the deprivation, with bilateral cases often resulting in severe visual impairment including nystagmus. Treatment requires immediate removal of the deprivation followed by aggressive optical rehabilitation and amblyopia therapy.
Usage
Usage note: Specify the cause when documenting (e.g., 'deprivation amblyopia secondary to congenital cataract').
In Context
- "The dense congenital cataract caused severe deprivation amblyopia requiring urgent surgical intervention within the first weeks of life." — pediatric ophthalmology consultation
- "Deprivation amblyopia from congenital ptosis may develop if the eyelid blocks the visual axis during the critical period." — clinical guideline documentation