The target was located 10 m behind the glare source.
The amount of veiling luminance depends on the illumination of glare source, the age of the observer, and angle of the glare source [1, 15] as shown in Eq. (4): {L}_v=frac{ktimes {E}_{glare}}{theta^n} (4).
In the equations, L v is veiling luminance, E glare refers to the illumination of glare source to the eye in lux, θ is the angle of the glare source, angle between the line of sight and the centre of the glare source, in degrees.
The line of vision is displaced an angle θ in relation to the position of the glare source.
Glare is caused by a complex combination of diverse factors: a glare source in a determined position, an observation direction, a background luminance, etc.
DGP considers the vertical illumination at the eye level as well as on the glare source luminance, its solid angle and its position index (Wienold & Christoffersen, 2006).
To investigate the correlation between visual acuity, contrast sensitivity, and contrast sensitivity with glare source (glare sensitivity), and the degree of posterior capsule opacification (PCO) before and after neodymium:yttrium-aluminum-garnet (Nd YAG) laser posterior capsulotomy.
The equivalent veiling luminance depends directly on the iluminance produced by the glare source over the eye, in a perpendicular plane to the vision line (Eeye) and inversely with the square of the angle between the vision line and the glare source (in degrees).
