Optical Quality After Implantation of a Spherical or Aspherical Intraocular Lens in Hypermetropic Patients

Not Applicable

Completed

• Conditions: Cataract; Depth of Focus; Spherical Aberrations; Intraocular Lenses

• Registration Number: NCT01995630
• Lead Sponsor: Medical University of Graz

Brief Summary

The purpose of this study is to evaluate differences in the depth of focus after implantation of a spherical or aspheric IOL in hypermetropic and emmetropic patients. After implantation of a spherical IOL hypermetropic patients may achieve a better depth of focus compared to emmetropic patients due to a larger amount of spherical aberrations.

Detailed Description

Not available

Study Timeline

• Study Start: 2013-11
• Study First Submitted: 2013-11-21
• Study First Submitted QC: 2013-11-21
• Study First Posted: 2013-11-26
• Primary Completion: 2016-06
• Study Completion: 2016-06-26
• Status Verified: 2017-06
• Last Update Submitted: 2017-06-27
• Last Update Posted: 2017-06-28

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 62

Inclusion Criteria

• Cataract
• Dioptric power of IOL >22.0 D in hypermetropic patients and 18.0-22.0 D in emmetropic patients, respectively

Exclusion Criteria

• Uveitis, pathology of the retina or the optic nerve
• Corneal scarring or irregularities
• Astigmatism >1.5 D
• Amblyopia
• Perioperative complications
• Postoperative refractive error >2.0 D of spherical equivalent
• Postoperative DCVA <0.8 (ETDRS)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Distance-corrected intermediate visual acuity	3 month postop

Secondary Outcome Measures

Name	Time	Method
Pseudoaccomodation	3 month postop
Photopic contrast sensitivity	3 month postop
Distance-corrected near visual acuity	3 month postop
Uncorrected distance visual acuity	3 month postop
Corrected distance visual acuity	3 month postop
Uncorrected near visual acuity	3 month postop
Corrected near visual acuity	3 month postop
Mesopic contrast sensitivity	3 month postop
Spherical aberrations	3 month postop
High order aberrations	3 month postop

Trial Locations

Locations (1)

Dept. of Ophthalmology, Medical University of Graz; 🇦🇹 Graz, Austria