The Long-term Outcome After Toric Intraocular Lens Implantation

Wenzhou Medical University

Status: Not yet enrolling

Conditions: Cataract; Corneal Astigmatism

Treatments: Device: subjective refraction

Study type: Observational

Funder types: Other

Identifiers

NCT05465447

TORIC-long term

Details and patient eligibility

About

Corneal astigmatism is refractive error that impairs uncorrected visual acuity. When patients undergo cataract surgery, implantation of toric IOL is deemed the most effective choice for correcting corneal astigmatism and reducing postoperative spectacle dependence. Previous studies report that the visual effects and rotational stability of toric IOLs are well maintained over 1- or 2-year follow-up periods. However, the long-term changes in the effects of toric IOLs remain unclear.

Full description

Corneal astigmatism is refractive error that impairs uncorrected visual acuity. When patients undergo cataract surgery, implantation of toric IOL is deemed the most effective choice for correcting corneal astigmatism and reducing postoperative spectacle dependence. Previous studies report that the visual effects and rotational stability of toric IOLs are well maintained over 1- or 2-year follow-up periods. However, there is a long-term against-the-rule (ATR) change of corneal astigmatism with aging，which influences the long-term outcomes of refractive surgery. The long-term changes in the effects of toric IOLs remain unclear. This study aim to observe the clinical effect of Toric IOL implantation in the correction of corneal astigmatism.

Enrollment: 60 estimated patients

Sex: All

Ages: 18 to 90 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• ≥18years old
• Regular astigmatism
• Corneal astigmatism ≥ 0.75D

Exclusion criteria

• Macular degeneration and retinal disease, history of glaucoma, corneal disease
• Previous corneal or intraocular surgery, and history of ocular inflammation.
• Pupils can not be dilated (< 7mm)

Trial design

60 participants in 1 patient group

Toric IOL

Description:

This study included the patients who underwent cataract surgery with the toric IOL(SN6ATX) implantation. Preoperative and postoperative corneal astigmatism, short-term and long-term postoperative total astigmatism were the main outcome indicators. Preoperative corneal astigmatism (Pentacam and IOLMaster) would be obtained from outpatient and inpatient medical records, and the IOL axis should be calculated before surgery. Short-term postoperative (1-3 months) subjective optometry results; Long-term postoperative (3-5 years) corneal astigmatism (Pentacam and IOLMaster), subjective optometry results, and axial lens would be observed using SSOCT after pupil dilation.

Treatment:

Device: subjective refraction