Effect of incision on visual outcomes after implantation of a trifocal diffractive intraocular lens

Completed

• Conditions: Patients undergoing cataract surgery with implantation of a trifocal diffractive IOL; Eye Diseases

• Registration Number: ISRCTN10086721
• Lead Sponsor: The Affiliated Hospital of Qingdao University

Brief Summary

2018 results in: https://www.ncbi.nlm.nih.gov/pubmed/30005634

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Completion: 2018-03-31
• Study Start: 2018-06-23
• Last Update Posted: 20 August 2018

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 77

Inclusion Criteria

Patients with cataract or presbyopia suitable for refractive lens exchange seeking spectacle independence who had preexisting corneal astigmatism of less than 1.00 D

Exclusion Criteria

Patients with a history of glaucoma, retinal detachment, corneal disease, irregular corneal astigmatism, abnormal iris, macular degeneration or retinopathy, neuro-ophthalmic disease, ocular inflammation, or previous ocular surgery

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
1. Corneal astigmatism measured with a Galilei device (Galilei G2, Ziemer ophthalmic systems AG, Port, Switzerland) at 1 day, 2 weeks, 1 month, or 3 months postoperatively<br>2. Uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA) and uncorrected near visual acuity (UNVA) obtained by the standard logarithmic chart at 1 day, 2 weeks, 1 month, or 3 months postoperatively<br>3. Total corneal wavefront aberration, root mean square value of corneal higher-order aberrations (RMS HOAs), spherical aberration (SA), coma, or trefoil measured with a Galilei device (Galilei G2, Ziemer ophthalmic systems AG, Port, Switzerland) at 1 day, 2 weeks, 1 month, or 3 months postoperatively

Secondary Outcome Measures

Name	Time	Method
1. The proportion of astigmatic axial length with the rule (WTR) (90°± 30°), against the rule (ATR) (0°to 30°or 150°to 180°), and oblique (30°to 60°or 120°to 150°) at pre operation and 3 months post operation<br>2. Surgically induced astigmatism (SIA) calculated using Jaffe/Clayman vector analysis at 3 months post operation<br>3. UDVA and CDVA between the subgroups obtained by the standard logarithmic chart pre operation