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Comparing the Efficacy Between Entry-Level Torsional and High-End Transverse Phacoemulsification Technologies.
Naren Shetty1, S J Tejal2, Rohitha Nayak2
1Cataract and Refractive Surgery, Narayana Nethralaya, Bangalore, IND.
Cureus
|May 15, 2026
Summary
An affordable torsional phacoemulsification system demonstrated superior intraoperative efficiency compared to a high-end transverse system. This entry-level device requires less ultrasound energy and surgical time, offering comparable clinical outcomes.
Area of Science:
- Ophthalmology
- Surgical Technology
- Cataract Surgery
Background:
- Phacoemulsification is a key cataract surgery technique.
- Comparing torsional and transverse phacoemulsification technologies is crucial for optimizing surgical outcomes and cost-effectiveness.
- Evaluating entry-level devices against high-end systems aids informed clinical decisions.
Purpose of the Study:
- To compare the intraoperative efficacy of torsional versus transverse phacoemulsification technologies.
- To assess the clinical outcomes and efficiency of an entry-level torsional system against a high-end transverse system.
- To determine if affordable phacoemulsification devices can provide uncompromised clinical care.
Main Methods:
- Prospective comparative study with quasi-random allocation involving 120 eyes with immature cataracts.
- Phacoemulsification performed using either an entry-level torsional or a high-end transverse system by the same surgeon.
- Preoperative and postoperative assessments included specular microscopy, pachymetry, and best-corrected visual acuity; intraoperative data and surgical videos were analyzed.
Main Results:
- The torsional system used 47.12% less ultrasound time (p < 0.001) and 5.15% less surgical time (p = 0.056).
- Torsional phacoemulsification demonstrated reduced chatter, better followability, and easier quadrant removal.
- No significant differences were observed in postoperative visual acuity, pachymetry, or endothelial cell density between the groups.
Conclusions:
- The torsional phacoemulsification system is more efficient, requiring less ultrasound energy and marginally shorter surgical time.
- The entry-level torsional system offers improved ease and efficiency in phacoemulsification compared to the transverse system.
- Affordable phacoemulsification technologies can deliver optimal clinical results, supporting cost-effective cataract surgery.

