Review of Optics: a virtual journal, started in 2019, is a virtual review journal, and it contains high-quality review articles from journals that published by Chinese Laser Press independently or along with its partners. Review of Optics is published quarterly. It aims to provide readers an alternative way to quickly look through high quality review papers. The scope of Review of Optics covers the full area of optics and photonics and relevant interdisciplinary topics, and meanwhile is in accordance with its source journals: Advanced Photonics, Chinese Optics Letters, High Power Laser Science and engineering and Photonics Research.