UNASSIGNED: To evaluate and compare the effect of femtosecond laser-assisted cataract surgery on corneal astigmatism in post-LASIK eyes and virgin eyes.
UNASSIGNED: Patients who underwent femtosecond laser-assisted cataract surgery were included in the study and categorized into two groups: Group A, consisting of patients with post-LASIK eyes, and Group B, consisting of patients with virgin eyes. Visual acuity, corneal astigmatism, and surgically induced astigmatism (SIA) were evaluated. Additionally, the correlation between SIA and preoperative corneal astigmatism, mean corneal curvature, and central corneal thickness was also analyzed.
UNASSIGNED: A total of 168 eyes were enrolled in this study, with 62 eyes in Group A and 106 eyes in Group B. Significant differences in corneal astigmatism and SIA were observed between the two groups in the early postoperative period following cataract surgery (P<0.05). However, there was no significant difference at 6 months postoperatively (P>0.05). Corneal astigmatism demonstrated an against-The-rule shift in both groups postoperatively. No significant correlation was identified between SIA and preoperative corneal astigmatism, corneal curvature or corneal thickness. Additionally, there was no significant difference observed between the two groups in terms of uncorrected distance visual acuity (UDVA) at 6 months postoperatively.
UNASSIGNED: The effect of femtosecond laser-assisted cataract surgery on corneal astigmatism in post-LASIK eyes and virgin eyes was different in the early postoperative period. However, there was no significant difference at 6 months postoperatively. The post-LASIK eyes exhibited a delayed recovery compared to the virgin eyes.

UNASSIGNED: To assess long term changes of the surgically induced astigmatism (SIA) and corneal higher-order aberrations (HOAs) after 2.2 mm clear corneal incisions (CCIs) in femtosecond laser-assisted cataract surgery and compare them between 2 types of CCIs: temporal and superior approach.
UNASSIGNED: Patients received the temporal CCIs (Group A) or the superior CCIs (Group B). Outcome measures included visual acuity, manifest refraction, corneal astigmatism, SIA, flattening effect, and corneal HOAs. Correlation between postoperative corneal HOA and SIA at each follow-up were analysed.
UNASSIGNED: This study assessed data from 106 eyes, of which 64 in Group A and 42 in Group B. The two groups had similar postoperative visual acuity of distance, intermediate and near (all P > 0.05). SIA and corneal HOAs were significantly lower in Group A than Group B in the early postoperative period, while there was no significant difference in the late postoperative period. At 6 months after surgery, the arithmetic mean of SIA over corneal 4mm zone was 0.33 ± 0.19D for temporal incision, and 0.37 ± 0.25D for superior incision. For Group A, the correlations of HOAs and SIA persisted from 1 week to 6 months after surgery. For Group B, the changes in corneal HOAs were significantly related to the SIA at 1 week and 1 month postoperatively.
UNASSIGNED: This study suggested the consistency of increasing and recovering process of corneal HOAs and SIA after surgery. Compared to the superior incisions, temporal incisions might induce quicker corneal recovery and less change in SIA and corneal HOAs.

To assess the surgical outcomes in patients who underwent femtosecond laser-assisted lamellar keratoplasty with double continuous suture for keratoconus, 100 patients (102 eyes) with keratoconus in advanced stages undergoing femtosecond laser-assisted lamellar keratoplasty in Shandong Eye Hospital were studied. In the management of keratoconus, 50 patients (52 eyes) received double continuous suture, and 50 patients (50 eyes) underwent interrupted suture. The follow-up duration was 1 year. Best-corrected visual acuity (BCVA), corneal astigmatism, cosmetic outcomes, and surgical complications were measured as outcome indicators. The epithelium healed at 3 ± 2 days and 4 ± 2 days in the double continuous suture group and the interrupted suture groups, respectively (P > 0.05). At 6 months after surgery, the average visual acuity was 20/125 and 20/100 (P > 0.05), and the average BCVA was 20/32 and 20/40 (P > 0.05), respectively. At 1 year after surgery, the average visual acuity was 20/63 and 20/80 (P > 0.05), and the average BCVA was 20/32 and 20/25 (P > 0.05), respectively; the mean curvature was 43.24 ± 5.15 D and 43.31 ± 5.58 D (P > 0.05), the mean astigmatism was 3.21 ± 1.74 D and 5.35 ± 1.37 D (P < 0.05).The looseness of sutures were found in 2 patients and 15 patients in both groups, respectively (P < 0.05). No postoperative infection or immune rejection occurred in either group during the follow-up. Comparing with the interrupted suture, using the continuous suture in femtosecond laser-assisted lamellar keratoplasty for keratoconus markedly limited the looseness of sutures with lesser corneal astigmatism and better visual quality postoperative.