Table 2.

Change of NEI-VFQ-25 visual functioning scale (VFS) scores by categories of vision impairment (VI) at baseline and 5-year follow-up (better-seeing eye) of the German population-based Gutenberg Health Study (GHS), time frame of 2007–2017

	Better-seeing eye, 5-year follow-up
	Change of VFS over 5 years	No VI (n = 8,997)	Mild VI (n = 83)	Moderate/severe VI (n = 51)
Better-seeing eye, Baseline	No VI (n = 9,875)	−1.08 points	−5.17 points	−8.96 points
	Mild VI (n = 28)	+ 14.79 points	−5.53 points	+ 0.83 points
	Moderate/severe VI (n = 32)	+ 14.76 points	+ 4.72 points	−5.45 points

VFS visual functioning scale