PDF(Pubmed)
Abstract：
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.
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.
摘要：
■评估飞秒激光辅助白内障手术中2.2mm透明角膜切口（CCI）后手术引起的散光（SIA）和角膜高阶像差（HOA）的长期变化，并比较两种CCI：颞入路和上入路。
■患者接受临时CCI（A组）或上级CCI（B组）。结果测量包括视力，明显的折射，角膜散光,SIA,展平效果，和角膜HOAs。分析每次随访时术后角膜HOA与SIA的相关性。
■这项研究评估了106只眼睛的数据，其中A组64例，B组42例。两组术后视力距离相似，中间和附近(均P>0.05)。术后早期A组SIA和角膜HOAs明显低于B组,而术后后期则无显著差异。手术后6个月,颞侧切口角膜4mm区SIA的算术平均值为0.33±0.19D，上切口为0.37±0.25D。对于A组，HOAs和SIA的相关性在手术后1周至6个月内持续存在.对于B组，术后1周和1个月角膜HOA的变化与SIA显著相关。
■这项研究表明手术后角膜HOAs和SIA增加和恢复过程的一致性。与优越的切口相比，颞部切口可能导致更快的角膜恢复和更少的SIA和角膜HOA变化。
■患者接受临时CCI（A组）或上级CCI（B组）。结果测量包括视力，明显的折射，角膜散光,SIA,展平效果，和角膜HOAs。分析每次随访时术后角膜HOA与SIA的相关性。
■这项研究评估了106只眼睛的数据，其中A组64例，B组42例。两组术后视力距离相似，中间和附近(均P>0.05)。术后早期A组SIA和角膜HOAs明显低于B组,而术后后期则无显著差异。手术后6个月,颞侧切口角膜4mm区SIA的算术平均值为0.33±0.19D，上切口为0.37±0.25D。对于A组，HOAs和SIA的相关性在手术后1周至6个月内持续存在.对于B组，术后1周和1个月角膜HOA的变化与SIA显著相关。
■这项研究表明手术后角膜HOAs和SIA增加和恢复过程的一致性。与优越的切口相比，颞部切口可能导致更快的角膜恢复和更少的SIA和角膜HOA变化。
