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Age-Related Macular Degeneration - part 9

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Ngoài ra, lĩnh vực của mình xem đã được mở rộng theo chiều ngang để cung cấp thêm đối với các tầm nhìn được thêm vào trong các lĩnh vực quan trọng nhất bên. Tập trung hướng dẫn sử dụng là khá nhanh với khả năng tập trung từ vô cực quang | Visual Rehabilitation 433 Figure 8 VES-II. Courtesy of Ocutech Inc. Figure 9 VES-MINI left as compared to a standard right expanded-field telescope. Courtesy of Ocutech Inc. optics are quite crisp and bright and can be prescribed for monocular or binocular use. Other special features are its unique design that minimized the ring scotoma that can be characteristic of many telescopic systems. Also its field of view has been expanded horizontally to provide extra added vision in the most important lateral fields. The manual focus is quite fast with capabilities of focusing from optical infinity down to 12 in. covered in less than one complete turn. In addition to being extremely lightweight it has internal refractive corrections from 12D to 12D eyepiece corrections are available for other refractive errors. This telescope is a good option for patients whose vision is better than 20 200. Optelec a leader in closed-circuit television has developed a new line of these most popular electronic devices. Their new ClearView line has an ergonomic design and is user friendly. The best features are the fingertip controls that give instant focus one-touch zoom push-button brightness level normal text and reverse-contrast modes and a position locator. Copyright Marcel Dekker Inc. All rights reserved. Marcel Dekker Inc. jS 270 Madison Avenue New York New York 10016 434 Primo Figure 10 Clearview 100 series with attachment to standard television. Figure 11 Clearview 517 with integrated tiltable monitor. 1. The simplest and least expensive 100 series is a lightweight and portable unit that connects easily to any television video input jack Fig. 10 . Although black and white only it will enlarge text depending on the size of the television screen. This very affordable system has the push-button instant focus and fingertip zoom control features the image is very sharp. 2. The ClearView 300 series also connects easily to a television set but has an ergonomically designed table that .