Pseudophakic Accommodation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00716339
Recruitment Status : Completed
First Posted : July 16, 2008
Last Update Posted : July 16, 2008
Information provided by:
Medical University of Vienna

Brief Summary:


The aim of this study was to compare the effect of ciliary body training as proposed by manufacturers of accommodating IOLs and patient motivation on the pseudoaccommodative ability with a standard intraocular lens (SA60AT).


Department of Ophthalmology, Medical University of Vienna.


This randomized, controlled, examiner-masked study comprised 80 eyes of 40 patients that underwent standard cataract surgery. Patients were randomly assigned to a "motivated" or "non-motivated" (control) group. In the motivated group, subjects were told to take part in a special protocol to improve their near-reading ability after cataract surgery and were instructed not to use near adds for at least 3 months. Follow-up examinations included best-corrected distance visual acuity (VA), distance-corrected near VA, best-corrected near VA, defocus curve and reading speed, as well as pilocarpine-, cyclopentolate- and nearpoint-induced IOL shift assessed with partial coherence interferometry.

Condition or disease Intervention/treatment
Cataract Behavioral: motivation

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 40 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Primary Purpose: Treatment

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cataract
U.S. FDA Resources

Arm Intervention/treatment
Active Comparator: 1
Behavioral: motivation
No Intervention: 2

Primary Outcome Measures :
  1. visual acuity (best-corrected distance VA, distance-corrected near VA, best-corrected near VA)

Secondary Outcome Measures :
  1. IOL shift (pilocarpine-, cyclopentolate- and nearpoint-induced) assessed with partial coherence interferometry

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Ages Eligible for Study:   50 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients suffering from age-related cataract who are enrolled for cataract surgery.
  • Age 50 to 75 years
  • < 1 D of corneal astigmatism, estimated postoperative VA of 20/30 or better and IOL power between 16 and 27 dpt

Exclusion Criteria:

  • Patients with complications during cataract surgery or during the postoperative period, significant other ophthalmic diseases such as glaucoma, diabetic retinopathy, etc., or ophthalmic surgery other than cataract surgery

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00716339

Medical University Vienna, Department of Ophthalmology
Vienna, Austria, 1090
Sponsors and Collaborators
Medical University of Vienna Identifier: NCT00716339     History of Changes
Other Study ID Numbers: EK 481/2004
First Posted: July 16, 2008    Key Record Dates
Last Update Posted: July 16, 2008
Last Verified: July 2008

Keywords provided by Medical University of Vienna:
pseudophakic accommodation

Additional relevant MeSH terms:
Lens Diseases
Eye Diseases