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Lens replacement planning in patients with cataracts and corneal astigmatism using the iTrace program

Clinical evaluation of the safety and effectiveness of toric intraocular lens implantation planning based on iTrace wavefront keratometric astigmatism calculation

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN94956424
Enrollment
60
Registered
2020-02-11
Start date
2018-01-02
Completion date
Unknown
Last updated
2021-02-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cataracts with corneal astigmatism Eye Diseases Cataracts with corneal astigmatism

Interventions

All patients with cataract and preexisting corneal astigmatism underwent phacoemulsification and toric IOL implantation. The IOL power and cylinders were chosen with the help of the iTrace toric plann

Sponsors

Shanxi Eye Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Cataracts with preexisting regular corneal astigmatism and requested toric IOL implantation 2. Cylindric values between 0.75 D and 5.0 D.

Exclusion criteria

Exclusion criteria: 1. Pregnancy and/or lactation 2. Irregular corneal astigmatism 3. Diabetic retinopathy 4. Iris neovascularization 5. Congenital eye abnormalities 6. Severe unstable tear film 7. Retinal detachment 8. Glaucoma 9. Pseudoexfoliation syndrome 10. Uveitis 11. Long-term anti-inflammatory treatment 12. Amblyopia 13. Advanced age-related macular degeneration 14. Previous ocular surgery 15. Severe corneal and/or retinal disease 16. History of eye trauma

Design outcomes

Secondary

MeasureTime frame
1. Visual acuity assessed using a Snellen E chart at baseline and 3 months 2. IOL axial position is measured with toriCAM when participants underwent mydriasis at 3 months 3. Corneal astigmatism measured with different devices are compared

Primary

MeasureTime frame
1. Astigmatic changes assessed by vector analysis using the Alpins method at baseline and 3 months 2. Postoperative refractive error assessed by the display of the postoperative refractive cylinder at 3 months

Countries

China

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 25, 2026