الفهرس 
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Abstract
The purpose of this study was to compare between the visual outcomes of
femtosecond Lasik and ICL implantation in patients with high myopia. To the
best of our knowledge, this is the first time to compare the outcome between ICL
and Femto-Lasik in correction of high myopia.
This study involved fifty high myopic eyes (of 25 patients) equal to or
more than -6.0 diopters recruited for FS-Lasik surgery (group 1); they were 16
females (64 %) and 9 males (36 %) and another 50 high myopic eyes (of 25
patients) equal to or more than -6.0 diopters recruited for ICL-implant surgery
(group 2); they were 15 females (60 %) and 10 m ales (40 %). The ages of group
(1) ranged from 18 to 38 years with mean ± SD of 24.6 ± 5.36 years and the ages
of group (2) was ranged from 1 9 to 39 years with mean of 25.3 ± 6.42 years (p
>0.05). This indicated that both age and sex were matched as illustrated in the
next table and figures.
Patients in this study had visual acuities of FS-Lasik and ICL groups
showed significant improvement in visual acuity in FS-Lasik group than ICL
group one day postoperatively, while after one week they had no difference (P >
0.05), but in the 3rd and 6th months postoperatively, there was a statistically
significant increase in visual acuities in ICL group than FS-Lasik group. It was
observed that there is a stability of visual acuity after FS-Lasik and ICL groups
which indicated that eyes with FS-Lasik group tend to regress by time, while in
ICL group the line tend to be more stable. However, both groups showed highly
significant improvement in visual acuity (p <0.001).
The changes of visual acuities after the follow-up period were 0.7 and
0.91 in FS-Lasik and ICL groups, respectively. They showed a statistically
significant value (p = 0.006). This indicated that ICL had a highly significant visual improvement than FS-Lasik at the end of the follow-up period with a very
good efficacy.
The preoperative spherical error and spherical equivalent (SE) were
statistically significant (P <0.05), while the other parameters showed statistically
insignificant difference (P >0.05) in comparison between the two studied groups.
The spherical equivalent of FS-Lasik and ICL groups showed significant
improvement in spherical equivalent in FS-Lasik group than ICL group one week
postoperatively, while after one month they had no difference (P > 0.05), but in
the 3rd and 6th months postoperatively, there was a statistically significant
improvement in spherical equivalent in ICL group than FS-Lasik group.
The change of refractive error after the follow-up period in this study were
5.12 and 7.79 in FS-Lasik and ICL groups, respectively. They showed a
statistically significant value (p = 0.00 9). This indicated that ICL had a highly
significant improvement of refractive error than FS-Lasik at the end of the followup
period with a very good efficacy.
Correlation coefficient (r) between axial length and visual outcome at the
end of the follow-up period of FS-Lasik group (1). There is a strong negative
correlation (r = -0.3198, p =0.002). However, correlation coefficient (r) between
axial length and visual outcome at the end of the follow-up period of ICL group
(2). There is a strong negative correlation (r = -0.5612, p =0.000).
Correlation coefficient (r) between central corneal thickness (CCT) and
visual outcome at the end of the follow-up period of FS-Lasik group (1). There is
a strong positive correlation (r = 0.60605, p =0.000), while correlation coefficient
(r) between CCT and visual outcome at the end of the follow-up period of ICL
group (2). There is a non-significant positive correlation (r = 0.0837, p =0.137).