How has the evolution of technology improved accessibility for visually impaired people?

The accessibility journey for visually impaired people has evolved significantly from Braille in the 1820s to talking books in the 1930s-40s, and audio cassettes in the 1960s. The most transformative development came in the late 1990s with e-books, which enabled visually impaired individuals to access content similarly to sighted readers through screen readers. Since 2000, the e-book revolution has dramatically improved electronic content accessibility, though challenges remain with scientific information, mathematical formulae, images lacking alt text, and legacy content that requires remediation to become accessible.