The development of navigation tools for people who are visually impaired had become an important concern in the research area of assistive technologies. This paper gives a comprehensive review of different articles published in the area of navigation solutions for people who are visually impaired. Unlike other review papers, this review considers major solutions that work in both the indoor or/and outdoor environments which are based on different technology. From the review, it became clear that the navigation systems proposed for the target users lack some core features that are quite important for independent navigation. Also, there can be instances in which humanitarian conditions also have to be considered in the navigation system design. Based on these findings, a set of recommendations are also given which can be considered in the future design of navigation systems for blind and visually impaired people.

为视障人士开发导航工具已成为辅助技术研究领域的一个重要问题。本文全面回顾了在针对视障人士的导航解决方案领域发表的不同文章。与其他评论论文不同，这篇评论考虑了在基于不同技术的室内或/和室外环境中工作的主要解决方案。从审查中可以清楚地看出，为目标用户提出的导航系统缺乏一些对独立导航非常重要的核心功能。此外，在某些情况下，导航系统设计中也必须考虑人道主义条件。基于这些发现，