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Nobuhiro Ozawa, Kiwako Mori, Yusaku Katada, Kazuo Tsubota, Toshihide Kurihara; Efficacy of the newly invented Eyelid Clamper in ultra-wide-field fundus imaging. Invest. Ophthalmol. Vis. Sci. 2019;60(9):1558.
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Nowadays Ultra-wide-field fundus imaging is widely used for obtaining wide field images of the retina in one single image. Although it has a potential to obtain up to 200 degrees of the retinal image, images are often obstructed by eyelashes or eye lids. Therefore, medical adhesive tapes or disposable eye lid speculums are used to support to keep eyes open. In this study, we examined the efficacy of a newly invented Eyelid Clamper (CenturyArks Co.,Ltd., Tokyo, Japan), which can keep an eye open without touching conjunctiva or lid margin.
Ultra-wide-field fundus images were captured by California icg (Optos, Inc, MA, USA) with medical adhesive tape followed with the Eyelid Clamper in 19 patients (12 males, 7 females, average age 67.9±10.6 years-old ) who came to the outpatient clinic of Department of Ophthalmology, Keio University Hospital, Tokyo, Japan. The area of imaged retina was outlined by using Photoshop (Adobe, Inc, CA, USA) and quantified with pixels. After obtaining images, the slit lamp microscopy examination was performed and a questionnaire was distributed.
The average number of pixels in total areas with the medical adhesive tape and the Eyelid Clamper were 4.32±0.34 and 4.31±0.35 mega pixels, respectively. There was no significant difference between two groups(P=0.889). Fluorescein staining on cornea was seen in 3 cases (15.8%) with score of less than 3 points. Symptomatic pain was seen in 6 cases (31.5%).
The Eyelid Clamper can be applied in clinical setting and can help to obtain sufficiently wide fundus images compared to the medical adhesive tape. Further improvement is needed to reduce pain and to enlarge area of image.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.
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