Comparative Analysis of One-Handed and Two-Handed Coaxial Phacoemulsification with 2.4-mm Clear Corneal Incision

Li, Panpan; Wu, Jian; Guan, Yu; Lu, Zhirong; Xue, Ying; Ji, Meiling; Guan, Huaijin

doi:10.1080/02713683.2018.1542733

Cited by 4 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Improvements in surgical techniques and instruments have propelled CCI into the current trend of phacoemulsification [8]. In RCS, CCI at the steepest meridian is the simplest and most commonly used surgical procedure for correcting preexisting astigmatism of the cornea.…”

Section: Discussionmentioning

confidence: 99%

“…Continuous curvilinear capsulorhexis (CCC) was performed with capsular forceps under the protection of an OVD. After CCC, hydrodissection and hydrodelineation were performed, and nuclear emulsification was performed using the one-handed technique [8]. All phacoemulsification was performed using the phacoemulsification machine (Centurion, Alcon, Fort Worth, America) in the burst mode.…”

Section: Methodsmentioning

confidence: 99%

“…CCC was performed with capsular forceps under protection of an OVD. After CCC, hydrodissection and hydrodelineation were performed, and nuclear emulsification was performed using the two-handed technique [8]. The rest of the procedure was similar to that used in the one-handed technique.…”

Section: Methodsmentioning

confidence: 99%

“…Currently, there are two kinds of phacoemulsification: one-handed phacoemulsification and two-handed phacoemulsification. Our previous studies have found that the one-handed technique had the advantage of reduced trauma to the cornea compared with the two-handed technique for cataract patients with a soft-to-moderate nucleus [8, 9]. The main objective of this study was to compare the efficiency and safety of steep-axis (based on the steep meridian of TCA) one-handed phacoemulsification with steep-axis two-handed phacoemulsification under the guidance of the Verion Image-Guided System.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Clinical Outcomes of Steep-Axis One-Handed Phacoemulsification under the Guidance of a Verion Image-Guided System

Chen

et al. 2019

Journal of Ophthalmology

Self Cite

View full text Add to dashboard Cite

Purpose. To compare the efficiency and safety of steep-axis one-handed phacoemulsification with steep-axis two-handed phacoemulsification.Patients and Methods. Patients with cataracts underwent steep-axis one-handed (steep-axis one-handed group) or steep-axis two-handed (steep-axis two-handed group) phacoemulsification with a 2.4 mm clear corneal incision (CCI) under the guidance of the Verion Image-Guided System. Intraoperative phacoparameters, such as visual acuity, surgically induced astigmatism (SIA), total corneal astigmatism (TCA), angle of error (AE), corneal volume (CV), and corneal endothelial cells, were compared.Results. There were no significant differences in the intraoperative phacoparameters between the two groups. The visual outcomes were significantly better in the steep-axis one-handed group than in the two-handed group at 1 week postoperatively (allp<0.05) but not at 1 month and 3 months postoperatively. TCAs were significantly decreased in both groups at 1 and 3 months postoperatively (allp<0.05). There were no significant differences at any follow-up points in both groups (allp<0.001). At 3 months postoperatively, the SIA was 0.95 ± 0.44 D in the steep-axis one-handed group and 1.01 ± 0.50 D in the steep-axis two-handed group; there was no significant difference between the groups. The AE was 39.45 ± 26.53° in the steep-axis one-handed group and 49.75° ± 26.23° in the steep-axis two-handed group, which were significantly different (p=0.005). Endothelial cell loss was significantly lower in the steep-axis one-handed group than that in the steep-axis two-handed group at all follow-up points (allp<0.05).Conclusions. Both the steep-axis one-handed and the steep-axis two-handed techniques could significantly decrease TCA. Compared with the steep-axis two-handed technique, the steep-axis one-handed technique has the advantage of decreasing the AE and reducing trauma to the cornea in soft-to-moderate nuclei.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Clinical Outcomes of Steep-Axis One-Handed Phacoemulsification under the Guidance of a Verion Image-Guided System

Chen

et al. 2019

Journal of Ophthalmology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Currently, cataract surgery has entered the era of refractive surgery, and the intraoperative correction of corneal astigmatism is a necessary requirement for refractive cataract surgery (RCS) [1]. The precise measurement of keratometry, corneal astigmatism and axis is signi cant in planning RCS, such as identifying the location and with of the clear corneal incision(CCI) [2,3],and calculating the type and axis of Toric intraocular lens (IOL) [4,5].…”

Section: Introductionmentioning

confidence: 99%

Repeatability of OPD-Scan III and its agreement with Pentacam in measuring keratometry, astigmatism and axis in patients with cataract and moderate to high astigmatism

Song¹,

Li²,

Tu³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Purpose To assess accuracy of OPD-Scan III in measuring keratometry, astigmatism and axis in patients with cataract and moderate to high astigmatism Materials and Methods Measurements were taken with OPD-Scan III and Pentacam in cataract patients with keratometric astigmatism (KA) more than 0.75 D. Keratometry in the steepest axis (Ks) and flattest axis (Kf), KA and axis, which are power vector components of astigmatism (J0 and J45), were evaluated. Intraclass correlation coefficients (ICCs) were used to assess repeatability. The Wilcoxon test was used to assess differences, the Spearman correlation was used to assess correlations, and the Bland-Altman method was used to assess agreement. Results Seventy eyes of 63 patients were included to analyze the repeatability of the two devices. The ICCs of Ks, Kf, KA, axis, J0 and J45 were 0.991, 0.995, 0.946, 0.883, 0.946 and 0.892, respectively, with OPD-Scan III. Seven hundred and thirty-two eyes of 516 patients were included to analyze the difference, correlation and agreement of the two devices. There were significant differences between the two devices in terms of Ks, Kf, axis, J0 and J45 (all p < 0.01). There were significant correlations between the two devices in each parameter (all p < 0.01). The 95% limits of agreement (LOAs) for Ks, Kf, KA, astigmatic axis, J0 and J45 were (-0.34, 0.44) D, (-0.24, 0.38) D, (-0.46, 0.48) D, (-10.20, 12.92)°, (-0.24, 0.24) D, and (-0.27, 0.35) D respectively.The 95% LOAs for the degree of IOL caculated according to parameter measured by OPD-Scan III and Pentacam was (-0.32, 0.22) D. Conclusions OPD-Scan III has a high accuracy for measuring keratometry, but its accuracy for measuring astigmatism and axis is poor in eyes with moderate to high astigmatism.

show abstract

Development and Comprehensive Assessment of the Clinical Effectiveness of a Method For Cataract Phacoemulsification Based on a Single Tunnel Incision

Semykin,

Bedikyan,

Tebueva

2024

Oftalʹmologiâ

View full text Add to dashboard Cite

Purpose. Development and evaluation of the clinical effectiveness of a technique for performing phacoemulsification of cataracts (FEC) based on a single tunnel incision.Patients and methods. We observed 96 patients (96 eyes, age 58.2 ± 1.2 years, 61 men, 35 women), divided into two groups equal in age, gender and visual status: control (CG, 46 patients, 46 eyes), for whom FEC was performed using the traditional method (total incision length 4.6 mm) and the main group (MG, 50 patients, 50 eyes), for whom FEC was performed using the developed method (total incision length 2.2 mm). The basis of the developed technique is to make a tunnel incision 2.2 mm long on the temporal side, followed by capsulorhexis, phacofragmentation, phacoemulsification of the lens nucleus and aspiration of the lens masses through a single tunnel incision. In this case, during phacofragmentation, a longitudinal fracture of the lens nucleus is performed along the axis 0–180°, the lens nucleus is rotated along the meridian 90–270° and another longitudinal fracture of the lens nucleus is performed along the axis 0–180°, and after phacoemulsification of the nucleus, aspiration is performed through a coaxial handle and IOL is implanted. A comparative assessment of the clinical effectiveness of the developed and traditional methods was carried out using clinical, refractive, morphological and biochemical parameters.Results. A higher clinical effectiveness of FEC using the developed method has been established (compared to the traditional one), which is confirmed by a decrease in the magnitude of surgically induced astigmatism (by 0.13 diopters, p < 0.001) and a tendency towards higher postoperative uncorrected distance visual acuity (by 0.05 rel. units, p > 0.05). Along with this, in the МG, compared with the CG, a pronounced decrease in the incidence of dry eye syndrome (by 3.4 %, p < 0.05), Creactive protein in the tear fluid (by 1.1 mg/l, p < 0.05) and preservation of the number of endothelial cells (by 4.8 %, p < 0.01).Conclusion. The developed technique for performing FEC is an effective prevention of surgically induced astigmatism and negative effects on the corneal endothelium and ocular surface, which is associated with a decrease in the total length of the incision (2.2 mm compared to 4.6 mm) and an intraoperative decrease in the total volume of circulating fluid.

show abstract

Comparative Analysis of One-Handed and Two-Handed Coaxial Phacoemulsification with 2.4-mm Clear Corneal Incision

Cited by 4 publications

References 29 publications

Clinical Outcomes of Steep-Axis One-Handed Phacoemulsification under the Guidance of a Verion Image-Guided System

Clinical Outcomes of Steep-Axis One-Handed Phacoemulsification under the Guidance of a Verion Image-Guided System

Repeatability of OPD-Scan III and its agreement with Pentacam in measuring keratometry, astigmatism and axis in patients with cataract and moderate to high astigmatism

Development and Comprehensive Assessment of the Clinical Effectiveness of a Method For Cataract Phacoemulsification Based on a Single Tunnel Incision

Contact Info

Product

Resources

About