High–Frequency Ultrasound for Screening of the Stages of ROP

Abstract

Abstract: : Purpose: Can all stages of retinopathy of prematurity be diagnosed using a hand–held high–resolution ultrasound system in cribside examinations? Methods: We used a 20 MHz handheld ultrasound probe placed in a fluid–filled latex sleeve that was applied to the closed eyelid with methylcellulose coupling gel. Details of the anterior and posterior segments were visualized by adjusting the offset by moving the probe within the sleeve. Realtime data were recorded on digital videotape. Independent ophthalmoscopic examinations were done 24–48 hours prior to ultrasound examination. Results: 20 eyes (10 patients) have been examined to date in this ongoing study. Ultrasound images have been shown to allow detailed visualization of the anterior and posterior segments, including details of all stages of ROP. The masked observer correlations with ophthalmoscopy will be reported. Conclusions: Ultrasonography with a high–resolution 20 MHz probe can be a useful tool for screening to detect all stages of ROP.

Keywords: retinopathy of prematurity • imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound)