![]() ![]() Īll the systems, services, devices and appliances that are used by disabled people to help in their daily lives, make their activities easier, and provide a safe mobility are included under one umbrella term: assistive technology. Although these tools are very popular, they cannot provide the blind with all information and features for safe mobility, which are available to people with sight. The simplest and the most affordable navigations and available tools are trained dogs and the white cane. The need for assistive devices for navigation and orientation has increased. Unfortunately, all these numbers are estimated to be doubled by 2020. However, the number of blind people that are over 60 years old is increasing by 2 million per decade. Over the past years, blindness that is caused by diseases has decreased due to the success of public health actions. Of these, 100,000 are students, according to the American Foundation for the Blind and National Federation for the Blind. ![]() More than 1.3 million are completely blind and approximately 8.7 million are visually-impaired in the USA. Among these individuals, there are 39 million who are blind in the world. The World Health Organization (WHO) Fact reported that there are 285 million visually-impaired people worldwide. Our aim is to address and present most of the issues of these systems to pave the way for other researchers to design devices that ensure safety and independent mobility to visually-impaired people. ![]() ![]() Thus, the contribution of this literature survey is to discuss in detail the most significant devices that are presented in the literature to assist this population and highlight the improvements, advantages, disadvantages, and accuracy. In this paper, we present a comparative survey of the wearable and portable assistive devices for visually-impaired people in order to show the progress in assistive technology for this group of people. Unfortunately, most of these systems are limited in their capabilities. There have been several systems designed to support visually-impaired people and to improve the quality of their lives. Among these individuals, there are 39 million who are totally blind. ✓ SUPERIOR DESIGN ~ Unlike other single strap swimming goggles, our split Y-shaped strap design has no trouble in ensuring a fixed position of the goggles on the head even during the most vigorous swimming.The World Health Organization (WHO) reported that there are 285 million visually-impaired people worldwide. In addition, the ergonomic 3D frame design ensures low water resistance and the best fit for a wide range of face shapes, men or women, adults or teenagers ✓ MORE COMFORT ~ This swim goggles offer soft & flexible silicone double seals designed to expand and contract to hug the unique contours of a swimmer’s face and achieve the right level of suction without applying excessive pressure around the eyes. Enhances clarity of vision and contrast for ground level objects and for seeing into water, making them ideal for outdoor swimming, surfing and other water related sports Polarised lenses increase your visual comfort since the eyes aren't constantly challenged by glare, thus making it easier to view objects in bright conditions. ✓ BETTER EYE PROTECTION AND VISION ~ Polarized polycarbonate lenses with advanced anti fog coating and UV-proof plating (Cat3 UV400 Standard). ![]()
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