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[Diagnostic value of B-scan in exudative age-related macular degeneration].

PURPOSE
To explore the image features of exudative age-related macular degeneration (AMD) with B-scan.


METHODS
Using NIDEK US-3300 model B-scan to observe 31 patients (54 eyes) with AMD.


RESULTS
The membranous arc echo was found at the posterior polar and there was a shuttle absence of echo between the echo band and the wall of eyeball in the period of retinal pigment epithelium detachment. During the exudation and hemorrhage absorbed not comletely, mixed echo was seen. A small parenchyma body with protrusion was seen with stronger echo in the late phase when the exudation and hemorrhage were replaced by the scar tissues, it was like a convex lens or a triangle and the top pointed to the globe behind, but it was flat towards the vitreous.


CONCLUSION
The B-scan examination is valuable in diagnosis, treatment and follow-up for exudative AMD.