NCT04247152

Comparison of Pre-operative Measurements With Intraoperative Aberrometry in Predicting Correction for Low Toric Lens Correction in Cataract Surgery

Comparison of Pre-operative Measurements With Intraoperative Aberrometry in Predicting Needed Correction for Low Toric Lens Correction in Cataract Surgery

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 200 (actual)
• Sponsor: Research Insight LLC · Industry
• Sex: All
• Age: —
• Healthy volunteers: Accepted

Summary

Examination of the accuracy of toric predictive power in patients with 1.5 diopters of astigmatism or less.

Detailed description

Based on preoperative keratometry and using the Baylor Nomogram and a standard factor for surgically-induced astigmatism, the investigators will calculate "keratometry-based total astigmatism" for each patient. This will be compared to "aberrometry-based total astigmatism", i.e. the total astigmatism measured by ORA in each case. With this information the investigators will determine in what portion of patients keratometry-based total astigmatism vs aberrometry-based total astigmatism predicts a need for astigmatism correction, (i.e., total astigmatism is greater than or equal to 0.5 D) during cataract surgery.

Conditions

• Cataract Surgery

Interventions

Type	Name	Description
OTHER	Intraoperative Aberrometry vs preoperative biometry	Hypothesis: Intraoperative aberrometry measures lower levels of astigmatism more accurately than preoperative biometry in patients undergoing cataract surgery.

Timeline

• Start date: 2019-07-22
• Primary completion: 2019-09-25
• Completion: 2019-09-25
• First posted: 2020-01-29
• Last updated: 2020-04-20

Locations

1 site across 1 country: United States