Clinical Trials Logo

Clinical Trial Summary

This is a research study designed to test the utility of D-shaped bifocal lenses and PRIO Computer Lenses for persons using a computer. We hypothesize that lenses specially designed for computer use may allow more comfortable and productive work on a computer.


Clinical Trial Description

This is a research study designed to test the utility of D-shaped bifocal lenses and PRIO Computer Lenses for persons using a computer. These are different types of eyeglass lenses and are commonly used when performing computer work. D-shaped bifocal lenses are designed for general purpose use and PRIO Computer Lenses are progressive addition lenses designed for using a computer and are not useful for driving or other tasks requiring clear distance vision. The study will examine how much work a subject completes during a 2-hr visit to the laboratory (productivity) and how a subject feels when working (symptoms). The UAB Department of Optometry sponsors this research study. Interested individuals must be at least 40 years of age and have relatively good vision in each eye when wearing glasses and to do at least 4-hrs of computer work per workday. There are no other restrictions to enter the study.

Participating subjects will be provided one of two different types of lenses and a choice of eyeglass frames. All subjects will be required to use the pair of glasses provided for all computer work for a period of 4 months. During the fourth and eighth weeks of this period, subjects will be required to complete three short surveys over the phone (10 questions) a day for five days (morning, noon and afternoon) on how the glasses affect their work on a computer and how they feel. These surveys should take about 5 minutes or less to complete. During the fifth or sixth week, subjects would be required to visit the laboratory at the School of Optometry to do 2-hours of editing tasks on a computer and complete the same short survey before beginning and after finishing. Participants would be called once a week to confirm that they are wearing the glasses. These calls would last about 2-3 minutes or less.

Upon qualifying for the study, subjects will be randomly (like the flip of a coin) assigned by a computer to receive either the bifocal lenses or the variable focus computer glasses. This will be a single-blind study, which means that neither your doctors completing the survey and the on-site visit will not be informed which type of glasses the subject is using.

The following periodic measurements will be made during the study: visual and upper extremity comfort (surveys) and productivity (editing task). Subjects will be asked to return to the clinic for 1 2-hr visit. At each visit subjects will be asked if they have experienced any undesirable reactions and how they are tolerating the glasses. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00585026
Study type Interventional
Source University of Alabama at Birmingham
Contact
Status Terminated
Phase Phase 3
Start date October 2006
Completion date June 2007

See also
  Status Clinical Trial Phase
Completed NCT05326607 - Pilot Clinical Investigation of Adaptative Eyeglasses for the Correction of Presbyopia N/A
Recruiting NCT06060041 - IC-8 Apthera IOL New Enrollment Post Approval Study
Completed NCT05495971 - Extended Depth of Focus Contact Lenses for Presbyopia N/A
Completed NCT05464732 - Vivity IOL: Emmetropia Compared to Monovision. N/A
Recruiting NCT06045299 - Evaluation of the Efficacy and Safety of LNZ101 and LNZ100 for the Presbyopia Phase 3
Active, not recruiting NCT04151550 - Safety & Efficacy of the Laser Scleral Microporation Procedure (Philippines) N/A
Not yet recruiting NCT05506553 - Comparison of Aspheric Toric Intraocular Lenses for Micro-monovision N/A
Completed NCT02554396 - Evaluation of the Efficacy and Safety of PRX-100 in the Treatment of Early to Moderate Presbyopia Phase 2
Completed NCT02235831 - DAILIES® AquaComfort Plus® Multifocal (MF) - Comparative Assessment of Visual Performance N/A
Completed NCT02214797 - Dispensing Study to Assess Visual Performance of Prototype Contact Lenses N/A
Enrolling by invitation NCT01443585 - Clinical Evaluation of a Progressive Addition Lens (PAL) N/A
Completed NCT01591499 - Clinical Evaluation of Biofinity Multifocal Compared With Air Optix Aqua Multifocal and With PureVision Multifocal N/A
Completed NCT04983589 - A Study to Assess Safety and Efficacy in Participants Age 40 to 55 With Presbyopia (Old Eye) Who Receive AGN-190584 in Both Eyes Twice Daily Phase 3
Completed NCT02740010 - The Visual Performances of a Progressive Multifocal Intraocular Lens With Extended Depth of Focus
Recruiting NCT05796453 - Post Market Clinical Follow-up (PMCF) Study of Clareon Vivity & Clareon PanOptix N/A
Completed NCT02516306 - A Study to Evaluate the Safety and Efficacy of EV06 Ophthalmic Solution in Improving Vision in Subjects With Presbyopia Phase 1/Phase 2
Completed NCT05359380 - The Impact of Light Conditions on the Efficacy of Multifocal Intraocular Lens Implantation in Activities of Daily Living
Not yet recruiting NCT04522427 - Study of Presbyopia-correcting Intraocular Lenses in Eyes With Previous Corneal Refractive Surgery N/A
Completed NCT03688425 - Comparison of Clinical Outcomes POD L GF vs POD F GF in Asian Eyes N/A
Recruiting NCT06053463 - Evaluation of Soft Multifocal Lenses in Presbyopic Previous Contact Lens Wearers N/A