“…The SCE-I can be measured using subjective 1,6,7 and objective techniques, [8][9][10] but the directionality reported using the latter method is approximately twice that of the former technique due to the double-passage of light through the photoreceptors. [11][12][13] Various factors influence the directionality and peak location, such as wavelength, [14][15][16] luminance, 16,17 eccentricity 16,18,19 and ocular conditions such as ocular disease, [20][21][22] phototropism, [23][24][25] refractive errors, 6,7 aberrations 6,7 and accommodation. 6,26 Accommodation induced retinal stretching affects photoreceptor alignment and directionality.…”