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Convex-lens aids. A: Spectacle magnifiers

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Presentation on theme: "Convex-lens aids. A: Spectacle magnifiers"— Presentation transcript:

1 Convex-lens aids. A: Spectacle magnifiers
Convex-lens aids. A: Spectacle magnifiers. B: Close reading distance with spectacle magnifier, both hands being free to hold reading material but light possibly being obstructed. C: Spectacle-mounted magnifiers. D and E: Dome magnifiers. F: Hand magnifiers of various strengths. G: Hand magnifier being used for kitchen task. H: Hand magnifiers suitable for carrying in a pocket or purse. I: Illuminated hand magnifiers of various strengths. J: Fixed focus stand magnifier, allowing writing on the material being read. K: A woman with macular degeneration uses a stand magnifier. Her hand tremor prevented her from using a hand magnifier. Source: Chapter 24. Low Vision, Vaughan & Asbury's General Ophthalmology, 18e Citation: Riordan-Eva P, Cunningham ET, Jr. Vaughan & Asbury's General Ophthalmology, 18e; 2011 Available at: Accessed: December 30, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved

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