• Glare is the "the dazzling sensation of relatively bright light, which produces unpleasantness or discomfort, or which interferes with optimum vision" (Cline, Hofstetter, & Griffin, 1989, p.292).
  
• Glare is identified as the number one problem for the visually impaired.
  

Discomfort Glare

• Discomfort glare occurs when widely varied levels of brightness exist concurrently within the eye's visual field(Rosenberg, 1984).
  
• Sunglasses with top and side-shield protection help minimize discomfort glare from the field of view.

Dazzling Glare

• Dazzling glare, also know as photophobia, occurs when an individual experiences extreme visual sensitivity to ambient light.
  
• Dazzling glare can be relieved with filters that attenuate (or lower the visible light transmission) across the complete visible spectrum.
  
• Use the lightest filter possible, since for every drop in percent transmission there is a corresponding drop in visual acuity.
  

Veiling Glare

• Veiling glare (also called disabling glare) is "stray light that interferes with visual resolution because it is random and thereby reduces the contrast of the figure/ground in the retinal image" (Rosenberg, 1984, p. 197).
  
• Low Vision sunglasses that filter short-to-medium wavelengths of the visible light spectrum can help reduce Veiling Glare. These amber, brown and orange filters are commonly known as “Blue- Blockers.”
  

The NoIR Filter System for Glare

• The NoIR Filter System minimizes eye discomfort and maximizes visual resolution by filtering the short-to-medium wavelengths of the visible spectrum.
  
• NoIR filters provide critical top and side- shield protection for complete glare protection.

Suggested Products

Glare Shield products have UV protection and are specifically designed to reduce glare.
465		70% Yellow
533		35% Amber/Orange
553		52% Red/Orange

UVShields are standard products with UV protection.
21		32% Medium Grey
22		13% Dark Grey
23		4% Dark Grey
32		10% Medium Grey-Green
40*		16% Medium Amber
42P*		21.2% Polarized Grey
44P*		25.9% Polarized Amber
47		40% Topaz
60		54% Medium Yellow
81		20% Medium Plum
88		40% Light Plum
80		4% Dark Plum
*Available in SpectraShield frames only

NoIR products have UV and IR protection.
11		40% Light Amber
01		10% Medium Amber
07		2% Dark Amber
12		40% Light Grey-Green
02		18% Medium Grey-Green
08		1% Dark Grey-Green

Percents (%) represent amount of visible light transmitted through each lens.