Astigmatism, Cataract
Conditions
Keywords
Cataract, Toric, Astigmatism, Digital Marking, Laser cataract surgery, cataract surgery
Brief summary
To evaluate the postoperative refractive accuracy and intraoperative lens rotational placement of a conventional toric intraoperative marking method compared to digital marking.
Detailed description
Preoperative biometry and planning was assessed with the Argos SS-OCT biometer. The ToriCAM application was also used to mark the patient manually at the bedside. A Mendez marker was used to mark the final axis of the IOL, as calculated by Argos. Digital marking was performed using the VERION image guided system. All subjects received both digital and manual marking, and were implanted with Clareon monofocal toric IOLs (CCWOTx) using the digital marker for final IOL alignment. The primary outcome measure was the difference in degrees between the digital marker and the manual marker as measured intraoperatively. Other outcome measures included IOL rotation, residual astigmatism, absolute prediction error (APE), and monocular visual acuity at 2 months postoperatively.
Interventions
DIAGNOSTIC_TESTNormal Toric IOL implantation with digital marking
Digital marking was compared to bedside marking, but there was no change in clinical practice. The difference in the marks was measured.
Sponsors
Colvard Kandavel Eye Center
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
50 Years to 90 Years
Healthy volunteers
No
Inclusion criteria
* Adults (50-90 years of age) that were candidates for uncomplicated cataract surgery and planned to be implanted with toric IOLs (CCWOTx, Alcon Vision, LLC)
Exclusion criteria
* History of amblyopia * History of macular disease * History of glaucoma * History of corneal disease * History of prior corneal surgery * History of diabetes * History of ocular comorbidity that might hamper post operative visual acuity * History of previous ocular or refractive surgery with expected post-op VA worse than 0.10 logMAR * History of irregular corneal astigmatism and keratoconus, or severe/uncontrolled ocular surface disease or dry eye disease.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| difference in degrees between the digital marker and the manual marker as measured intraoperatively | From enrollment to the end of post-operative period at 2 months |
Secondary
| Measure | Time frame |
|---|---|
| Absolute Prediction Error (APE) | From enrollment to the end of post-operative period at 2 months |
| Monocular Visual Acuity | From enrollment to the end of post-operative period at 2 months |
| IOL rotation | From enrollment to the end of post-operative period at 2 months |
| Residual Astigmatism | From enrollment to the end of post-operative period at 2 months |
Countries
United States
Outcome results
None listed