Ophthalmic ultrasound, also known as B-scan sonography, is a specialized imaging technique used to evaluate the internal structures of the eye. This method is especially valuable when direct visualization of the eye's interior is difficult, such as in cases of dense cataracts or vitreous hemorrhage. B-scan sonography provides detailed assessments of the eye's structures and supports treatment planning and monitoring of eye diseases. This imaging tool is essential in ophthalmology for accurate diagnosis and effective treatment management.