*Criteria for Successful CVTME Testing*

For the present purposes, a child was able to cooperate with and respond to each test plate in order and in demonstration was successful when a subject name each of the black and white figures [32]. OCTs provided information on surface depth and size as well as pigment distribution. This information also applied to surfaces with higher roughness [34].

Subjects preferred daylight for visual acceptance and glare. Photometric variables modulated changes in visual light perception, alertness and mood in the afternoon [35]. Red, green and blue light could affect the colour appearance of the objects illuminated, particularly when they were vivid and saturated by high gamut area index. There was a strong preference for colours with enhanced saturation [16].

Perceptions were measured for different combinations of LEDs and perceived quality and links were assessed [5]. There was a preference for naturalness and colourfulness, and naturalness was weakly related to colourfulness [6]. The judgments for colour preference and comfort were highly correlated, and the whiteness of the lighting influenced colour preference, comfort and discrimination [3]. The average colour difference between the original and the recovered colours was relatively high; when the high value was disregarded, the average colour difference was reduced to 4.2 [1]. For dark objects, chroma was overestimated to lightness [31]. In dichromatic persons, the number of discernible colours was about 7% of normal. Only modest improvements could be obtained for dichromats [33].

The ocular symptoms increased with the use of the smartphone, in comfort, fatigue and drowsiness (*p* ≤ 0.02). Accommodation was also reduced (*p* = 0.01). There were no other changes except an increase in the number of incomplete blinks, associated with a general worsening of eye symptoms (ρ = −0.65, *p* = 0.02) and fatigue (ρ = 0.70, *p* = 0.01) [19]. The accommodative lag was significantly different between schoolchildren and adults [F (1219, 35,354) = 11,857, *p* < 0.05] and non-myopic and myopic [F (3107, 31,431) = 12,187, *p* < 0.05]. It was higher in myopic schoolchildren (0.655 ± 0.198 D) than in non-myopic patients (0.202 ± 0.141 D, *p* < 0.05) and myopic young adults (0.316 ± 0.172 D, *p* < 0.05). The accommodative delay was greater in the mesopic room (all *p* < 0.05) [20].

Blue measured 0.45 ± 0.09 D, green 0.07 ± 0.02 D, and red 0.49 ± 0.10 D. The monochromatic DOFi was 1.10 ± 0.10 D with 0 D, 1.20 ± 0.08 D with 2 D and 1.26 ± 0.40 D with 4 D. The polychromatic white DOFi was higher than the monochromatic one (19%, 9% and 14%) [21]. MTF values were significantly higher than the values measured at the low range of polychromatic light [22]. Chromatic aberration resulted from a bifocal change in the quality of the near image; objects viewed at a distance were better with the design [23].
