Sharifi Ali, Sharifi Leila, Morteza Afsaneh
Kerman University of Medical Sciences, Kerman, Iran.
Int Ophthalmol. 2012 Oct;32(5):431-4. doi: 10.1007/s10792-012-9591-8. Epub 2012 Jun 9.
Here we aimed to define keratometric and refractive astigmatism in a series of patients who underwent phacoemulsification, using small corneal incision and implantation of foldable intraocular lenses. Furthermore, we compared keratometric astigmatism and refractive astigmatism of the patients both before and after surgery. We performed a follow-up study of patients with newly diagnosed cataract before and after phacoemulsification surgery. Eighty eyes from 78 patients with a mean age of 62.9 ± 12.03 (32-86) years were studied. Thirty-nine (48.8 %) were male and 41(51.2 %) were female. All subjects underwent 3.5 mm corneal incision with the temporal (75 patients; 94 %) or superior (5 patients; 6 %) approach. The patients were followed for a mean of 74.21 ± 71.25 (30-400) days. Patients had higher values of keratometric measurements after surgery compared to those before surgery [45.81 ± 0.11 (45.06-45.94) vs. 45.2 ± 0.20 (44.6-45.41)] (p < 0.001). There was no significant difference in the keratometric astigmatism, refractive astigmatism and keratometry axis pre- and postoperatively. The mean keratometric astigmatism was 0.9 ± 0.54 (0.00-4.00) diopters (D) preoperatively and 0.93 ± 0.45 (0.00-4.00) D postoperatively (p = 0.444). The keratometric axis was 97.7 ± 9.4 preoperatively and 115 ± 15.8 postoperatively (p = 0.185). Refractive astigmatism was 1.15 ± 0.77 (5-180) with the refractive axis of 89.7 ± 5.89 (5-180) degrees in the follow-up (p = 0.752). Ninety percent of the patients had <1.00 D difference in the keratometric and refractive astigmatism, postoperatively. In conclusion while there is no significant difference in postoperative keratometric and refractive astigmatism in most of the eyes, about 10 % show >1 D difference in these measurements.
在此，我们旨在确定一系列接受白内障超声乳化手术、采用小切口角膜手术并植入可折叠人工晶状体患者的角膜散光和屈光性散光。此外，我们比较了患者手术前后的角膜散光和屈光性散光。我们对新诊断的白内障患者在超声乳化手术前后进行了随访研究。研究对象为78例患者的80只眼，平均年龄62.9±12.03（32 - 86）岁。其中男性39例（48.8%），女性41例（51.2%）。所有受试者均采用颞侧（75例患者，94%）或上方（5例患者，6%）入路进行3.5mm角膜切口。患者平均随访74.21±71.25（30 - 400）天。与术前相比，患者术后角膜测量值更高[45.81±0.11（45.06 - 45.94）对45.2±0.20（44.6 - 45.41）]（p<0.001）。术前和术后角膜散光、屈光性散光及角膜测量轴无显著差异。术前平均角膜散光为0.9±0.54（0.00 - 4.00）屈光度（D），术后为0.93±0.45（0.00 - 4.00）D（p = 0.444）。角膜测量轴术前为97.7±9.4，术后为115±15.8（p = 0.185）。随访时屈光性散光为1.15±0.77（5 - 180），屈光轴为89.7±5.89（5 - 180）度（p = 0.752）。90%的患者术后角膜散光和屈光性散光差值<1.00D。总之，虽然大多数眼睛术后角膜散光和屈光性散光无显著差异，但约10%的患者这些测量值差值>1D。
