Szurman, "Influence of the pupil size on visual quality and

spherical aberration after implantation of the Tecnis 1piece intraocular lens," British Journal of Ophthalmology, vol.

Caption: Figure 1: Mean values of root mean square (RMS) in [micro]m of total aberrations (Total), lower-order aberrations (LOAs), higher-order aberrations (HOAs), and coma and

Spherical aberrations (SAs) for a 4 mm pupil diameter at baseline and one month after orthokeratology wearing.

The magnitude of induced change in coma (-0.180.17) was more than

spherical aberrations (0.1320.36).

As the illuminated portion gets bigger, the astigmatism and

spherical aberration grow.

[38] indicated that ocular

spherical aberration underwent statistically significant diurnal variation, i.e.,

spherical aberration was positive during the day and gradually became more negative toward the later afternoon/evening.

Conclusions: In overall comparison the mean RMS of total HOAs and

spherical aberrations was significantly increased in hypermetropia group and there was a statistically significant negative correlation of SE of hypermetropia with RMS of total HOAs and

spherical aberration.

For optical systems with large apertures, such as the eye with a dilated pupil,

spherical aberration is a significant problem since the peripheral lens refracts rays of light more than at the centre.

After both the SMILE and FS-LASIK procedures, the changes in

spherical aberrations of the anterior surface and the total cornea were positively correlated with the increase in Q value at the anterior corneal surface (all P <0.001), and the changes in

spherical aberrations of the posterior surface were negatively correlated with the increase in Q value at the posterior corneal surface (all P <0.001).

Spherical aberrations of intraocular lenses increase as its optical power increases.

This study only analyzed the changes of total higher-order aberrations, total coma aberration, total

spherical aberration, and total trefoil aberration corresponding to the RMS value in the children with with-the-rule astigmatism.

The optical design is based on application of positive and negative

spherical aberrations in the central part of the lens, in order to increase the depth of focus and to generate a "continuum range of focus." The optic is divided into three different annular zones: the inner and middle zones have different

spherical aberrations with opposite signs, whereas the outer one is a monofocal aspherical zone (see Figure 1(b)).

Aspira-aA Horizontal tilt ([degrees]) 0.35 [+ or -] 1.65 Vertical tilt ([degrees]) 0.63 [+ or -] 1.76 Horizontal decentration (mm) 0.03 [+ or -] 0.16 Vertical decentration (mm) 0.08 [+ or -] 0.15 Tecnis ZCB00 Horizontal tilt ([degrees]) 0.67 [+ or -] 1.42 Vertical tilt ([degrees]) 0.19 [+ or -] 1.24 Horizontal decentration (mm) 0.04 [+ or -] 0.27 Vertical decentration (mm) 0.07 [+ or -] 0.23 p value Horizontal tilt ([degrees]) 0.02 Vertical tilt ([degrees]) 0.35 Horizontal decentration (mm) 0.94 Vertical decentration (mm) 0.96 Table 5: Total ocular higher-order

spherical aberrations measured at different pupillary diameters in eyes implanted with Aspira or with Tecnis IOL ([micro]m; mean [+ or -] SD; n = 60).