Ultrasonographic feature of persistent hyperplastic primary vitreous.

Purpose: To observe the ultrasonographic features of patients with persistent hyperplastic primary vitreous (PHPV).

Methods: Thirty-two subjects (34 eyes) diagnosed with PHPV were evaluated by ultrasonography.

Results: The ultrasonography demonstrated a retrolental mass extending from the optic disc to the posterior lens capsule, manifested as band, regular triangle, or inverted triangle shapes. The band-shaped echo was characterized as a linear band extended from the optic disc to the posterior lens capsule. The regular triangle-shaped echo was manifested as a membranous septum with a wide base extended from the optic disc to the posterior lens capsule, and the anterior part became narrower. The inverted triangle echo was characterized as a membranous septum with a narrow base extended from the optic disc to the posterior lens capsule, and the anterior part become wider.

Conclusion: Ultrasonography is noninvasive and safe, and can offer real-time display of intraocular structures. This is especially important in individuals who are uncooperative or unsuitable for fundus examination due to media opacity. Combined with clinical feature, ultrasonography provides vital evidence for the diagnosis of PHPV. Thought observing ultrasonographic feature, clinicians could evaluate the size, position and severity of lesions in PHPV patients, and which would be helpful to determine the surgical approach and clinical prognosis.