Evaluation of Anterior Segment Parameter Changes Using the Sirius after Uneventful Phacoemulsification
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Purpose: To investigate changes in anterior chamber depth (ACD), corneal volume (CV), anterior chamber angle(ACA), anterior chamber volume (ACV), central corneal thickness (CCT), horizontal visible iris diameter (HVID),pupil diameter (PD), and intraocular pressure (IOP) after uneventful phacoemulsification cataract surgery withintraocular lens implantation. Methods: A total of 132 eyes of 132 patients (87 men and 45 women) that underwent uneventful phacoemulsificationcataract surgery and intraocular lens implantation were prospectively studied. The mean age of thepatients was 63.68 ± 12.51 years. All patients were evaluated preoperatively and at 1 month postoperativelywith the Sirius 3D Rotating Scheimpflug camera topography system. The ACD, CV, ACA, ACV, CCT, HVID,and PD measurements were recorded. IOP was measured using the Goldmann applanation tonometer, whichwas corrected for CCT of the Sirius device using Ehlers’ formula. Results: The preoperative mean ACD, ACV, ACA, CCT, CV, PD, HVID, and IOP were 2.79 ± 0.45 mm, 124.73 ±25.72 mm3, 42.09 ± 7.490, 523.87 ± 41.97 microns, 55.37 ± 4.89 mm3, 3.98 ± 1.23 mm, 11.72 ± 0.67 mm, and14.74 ± 2.59 mmHg, respectively. Three months postoperatively, the mean ACD, ACV, ACA, CCT, CV, PD,HVID, and IOP were 3.45 ± 0.6 mm, 162.52 ± 23.79 mm3, 51.46 ± 5.630, 526.21 ± 44.45 microns, 56.23 ± 5.12mm3, 2.87 ± 0.45 mm, 11.91 ± 0.75 mm, and 12.02 ± 1.83 mmHg, respectively. There was a statistically significantincrease in mean postoperative ACD, ACV, ACA, CV, and HVID compared with the corresponding preoperativevalues (p < 0.05). CCT remained stable after surgery. Postoperative PD and IOP were significantlydecreased compared to corresponding preoperative values (p < 0.05). Conclusions: Preoperative measurements by the Sirius 3D Rotating Scheimpflug camera topography systemmight help surgeons to predict postoperative changes resulting from phacoemulsification and intraocular lensimplantation. This is a noncontact, noninvasive, and comfortable system for patients that is highly reliable andrepeatable for anterior segment measurements.
Abstract
Purpose: To investigate changes in anterior chamber depth (ACD), corneal volume (CV), anterior chamber angle(ACA), anterior chamber volume (ACV), central corneal thickness (CCT), horizontal visible iris diameter (HVID),pupil diameter (PD), and intraocular pressure (IOP) after uneventful phacoemulsification cataract surgery withintraocular lens implantation. Methods: A total of 132 eyes of 132 patients (87 men and 45 women) that underwent uneventful phacoemulsificationcataract surgery and intraocular lens implantation were prospectively studied. The mean age of thepatients was 63.68 ± 12.51 years. All patients were evaluated preoperatively and at 1 month postoperativelywith the Sirius 3D Rotating Scheimpflug camera topography system. The ACD, CV, ACA, ACV, CCT, HVID,and PD measurements were recorded. IOP was measured using the Goldmann applanation tonometer, whichwas corrected for CCT of the Sirius device using Ehlers’ formula. Results: The preoperative mean ACD, ACV, ACA, CCT, CV, PD, HVID, and IOP were 2.79 ± 0.45 mm, 124.73 ±25.72 mm3, 42.09 ± 7.490, 523.87 ± 41.97 microns, 55.37 ± 4.89 mm3, 3.98 ± 1.23 mm, 11.72 ± 0.67 mm, and14.74 ± 2.59 mmHg, respectively. Three months postoperatively, the mean ACD, ACV, ACA, CCT, CV, PD,HVID, and IOP were 3.45 ± 0.6 mm, 162.52 ± 23.79 mm3, 51.46 ± 5.630, 526.21 ± 44.45 microns, 56.23 ± 5.12mm3, 2.87 ± 0.45 mm, 11.91 ± 0.75 mm, and 12.02 ± 1.83 mmHg, respectively. There was a statistically significantincrease in mean postoperative ACD, ACV, ACA, CV, and HVID compared with the corresponding preoperativevalues (p < 0.05). CCT remained stable after surgery. Postoperative PD and IOP were significantlydecreased compared to corresponding preoperative values (p < 0.05). Conclusions: Preoperative measurements by the Sirius 3D Rotating Scheimpflug camera topography systemmight help surgeons to predict postoperative changes resulting from phacoemulsification and intraocular lensimplantation. This is a noncontact, noninvasive, and comfortable system for patients that is highly reliable andrepeatable for anterior segment measurements.
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