Uçakhan Ozlenen O, Ozkan Muhip, Kanpolat Ayfer
Department of Ophthalmology, Ankara University, Turkey.
Acta Ophthalmol. 2009 Aug;87(5):544-8. doi: 10.1111/j.1755-3768.2008.01305.x. Epub 2008 Sep 11.
We set out to quantify changes in the anterior chamber volume (ACV), anterior chamber depth (ACD) and anterior chamber angle (ACA) measurements obtained by the Pentacam rotating Scheimpflug camera following uneventful phacoemulsification surgery in normotensive eyes with open iridocorneal angles.
We enrolled 44 eyes of 44 consecutive patients undergoing cataract extraction in this prospective study. Patients with a history of glaucoma, angle-closure glaucoma or any other concurrent ocular disease were excluded. A detailed eye examination including intraocular pressure (IOP) measurement was performed and ACV, ACD and inferior, superior, temporal and nasal ACA measurements were obtained in each patient eye using the Pentacam Comprehensive Eye Scanner (Pentacam CES) before and 3 months after phacoemulsification and intraocular lens (IOL) implantation with temporal clear corneal incision. Data were compared using paired t-test and one-way anova.
Mean preoperative ACV, ACD, ACA and IOP measurements were 164.7 +/- 49.8 mm(3), 3.0 +/- 0.8 mm, 35.7 +/- 10.2 degrees and 15.8 +/- 3.7 mmHg, respectively. Three months postoperatively, mean ACV, ACD, ACA and IOP measurements were 200.9 +/- 33.3 mm(3), 3.9 +/- 0.9 mm, 41.5 +/- 6.5 degrees and 13.2 +/- 3.9 mmHg, respectively. Postoperative mean ACV, ACD and ACA values in all four quadrants were significantly increased (p < 0.0001, p < 0.0001, p < 0.0001, respectively), whereas IOP was significantly reduced (p < 0.0001).
The Pentacam CES allowed very easy, fast, automatic and non-contact quantification of the anterior chamber parameters pre- and postoperatively in all patient eyes. Measurements obtained confirm that in normotensive eyes with open iridocorneal angles, the ACV and ACD increase and the ACA widens in all quadrants 3 months after uneventful phacoemulsification and IOL implantation. These changes are accompanied by a significant fall in IOP in the short term.
我们旨在量化在具有开放虹膜角膜角的正常眼压眼中，行白内障超声乳化手术且手术过程顺利后，使用Pentacam旋转式Scheimpflug相机测量的前房容积（ACV）、前房深度（ACD）和前房角（ACA）的变化。
在这项前瞻性研究中，我们纳入了44例连续接受白内障摘除术患者的44只眼。排除有青光眼、闭角型青光眼或任何其他并发眼部疾病史的患者。进行详细的眼部检查，包括测量眼压（IOP），并在超声乳化和经颞侧透明角膜切口植入人工晶状体（IOL）术前及术后3个月，使用Pentacam综合眼部扫描仪（Pentacam CES）对每位患者的眼睛进行ACV、ACD以及下方、上方、颞侧和鼻侧ACA的测量。使用配对t检验和单因素方差分析对数据进行比较。
术前ACV、ACD、ACA和IOP的平均测量值分别为164.7±49.8mm³、3.0±0.8mm、35.7±10.2°和15.8±3.7mmHg。术后3个月，ACV、ACD、ACA和IOP的平均测量值分别为200.9±33.3mm³、3.9±0.9mm、41.5±6.5°和13.2±3.9mmHg。所有四个象限的术后平均ACV、ACD和ACA值均显著增加（分别为p<0.0001、p<0.0001、p<0.0001），而IOP显著降低（p<0.0001）。
Pentacam CES能够非常轻松、快速、自动且非接触地对所有患者眼睛的术前和术后前房参数进行量化。所获得的测量结果证实，在具有开放虹膜角膜角的正常眼压眼中，超声乳化和IOL植入手术顺利进行3个月后，ACV和ACD增加，所有象限的ACA变宽。这些变化伴随着短期内IOP的显著下降。
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