Ultra-Widefield Swept-Source Optical Coherence Tomography Findings of Peripheral Retinal Degenerations and Breaks

Abstract

Purpose

To investigate whether ultra-widefield (UWF) swept-source optical coherence tomography (SSOCT) system (Silverstone, Nikon Healthcare Japan, Inc, Tokyo, Japan) can obtain OCT images of peripheral retinal degenerations and breaks.

Methods

Thirty-seven eyes of 31 consecutive cases (16 men, 15 women; mean age 51 years) who had peripheral retinal degenerations and underwent a UWF-SSOCT imaging were enrolled. The convenience and usefulness were investigated.

Results

In all eyes, OCT images were capable and interpretable without any special techniques. The respective findings on OCT were retinal degeneration in 16 eyes: lattice degeneration in 8 eyes, paving stone degeneration in 4 eyes, and unclassified in 4 eyes, retinal tear in 12 eyes, and retinal hole in 9 eyes. The respective locations of the retinal degenerations or breaks were the posterior pole in 0 eyes, mid-periphery in 23 eyes, and far-periphery in 14 eyes. Fifteen eyes had a rhegmatogenous retinal detachment (RRD), one of which was preoperative and the other 14 eyes were postoperative. A buckle was placed in 8 eyes for RRD repair. Subretinal fluid was observed in 9 of 21 eyes with retinal break or retinal hole. Vitreoretinal traction was observed in 10 of 27 eyes without a history of vitrectomy. Inverted artifacts on OCT images were observed in 20 of 37 eyes, which were not related to the location or axial length, but were supposed to be due to the limited scan depth.

Conclusion

The UWF-SSOCT system could capture the OCT images of peripheral retinal degenerations and breaks without any special technique.

Keywords:

• ultra-widefield
• swept-source optical coherence tomography
• peripheral retinal degeneration
• retinal break
• rhegmatogenous retinal detachment

Acknowledgments

The 59th Annual Meeting of Japanese Retina and Vitreous Society, Fukuoka, Japan, November 27–29th, 2020. We thank Fumie Shibuya, Sayaka Oshio, Satomi Izumi, and Miho Takeuchi (Nagoya City University Graduate School of Medical Sciences) for contribution to data collection.

Disclosure

Y.H. was supported by a Grant-in-Aid for Scientific Research (C) 18K09416 and 21K09678 from the Japan Society for the Promotion of Science, Tokyo, Japan and the Hori Sciences & Arts Foundation, Nagoya, Japan. The Japan Society for the Promotion of Science also supported S.O. [Grant-in-Aid for Research Activity Start-up 20K22785], T.Y. [Grant-in-Aid for Scientific Research (C) 19K09954]. Y.O. reports grants and personal fees from Novartis; personal fees from Bayer, Senju Pharma., Chengdu Kanghong Biotechnology, Kyoto Drug Discovery & Development, Chugai Pharmaceutical Co., Iveric Bio, Apellis Pharmaceutical Co., Topcon, and Carl Zeiss; grants from Boehringer Ingelheim, outside the submitted work. The authors report no other conflicts of interest in this work.

Additional information

Funding

There is no funding to report.