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Satoshi Ishiko, Hiroyuki Kagokawa, Akira Takamiya, Eiichi Sato, Kazuhiro Sugawara, Akitoshi Yoshida; MultiImaging Using the Ultra Widefield Retinal Imaging Device for Fundus Screening. Invest. Ophthalmol. Vis. Sci. 2013;54(15):1470.
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© ARVO (1962-2015); The Authors (2016-present)
To study the effect of multi-imaging using an ultra-wide-field retinal imaging device (Optos 200Tx, Marlborough, MA) for fundus screening.
One hundred forty-eight eyes of 74 medical students (54 men, 20 women; mean age, 26.1±5.2 years) who attended the clinical clerkship for ophthalmology at Asahikawa Medical University were included. Fundus imaging using the Optos device was performed in five directions (central, superior, inferior, temporal, nasal) to observe the inner fixation target in each direction. Conventional fundus examinations using a funduscope and a slit-lamp with a 90-diopter non-contact lens were performed under mydriasis to facilitate fundus screening for pathologies in the retinal periphery.
Retinal breaks (n=2), lattice degeneration (n=5), and retinal changes (n=18) such as pigmentation, degeneration, and atrophy were observed in 20 eyes during the fundus examination. Using Optos, six (24.0%) of 25 lesions were observed centrally. Six (100%) of six lesions located posterior to the equatorial zone were observed. We observed five (85.7%) of six lesions superiorly, eight (72.7%) of 11 lesions inferiorly, and two (100%) of two lesions temporally. No pathologic changes were seen nasally. When the images in the four directions and two vertical directions were added to the central image, the sensitivity for the detection improved significantly (p<0.01) up to 84.0% and 76.0%, respectively. There were no significant differences in sensitivity between the four directions added and the two vertical directions added.
The ultra-wide-field retinal imaging device can be useful for fundus screening for diseases posterior to the equatorial zone. However, to screen in the retinal periphery, the inferior and superior images also should be used with the central image.
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