At a glance

ClinicalIndex Comparison Record

N/ACompleted· 95 enrolled

Drug / intervention

Standard, non-free-form, non-customized PAL spectacles +1 moredevice

Likely dose

Not stated in record

Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT01234207

NCT01234207N/ACompleted

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Clinical Assessment of a Customized Free-form Progressive Addition Lens Spectacle

University of California, Berkeley·interventional·Posted Nov 4, 2010·Updated Apr 18, 2017

In Brief

A clinical study evaluating Standard, non-free-form, non-customized PAL spectacles and Individually customized free-form surfaced PAL spectacles for Presbyopia. Completed, enrolled 95 participants across 1 site.

Detailed Summary

The purpose of this study was to compare objective clinical measures of visual performance and subjective measures of satisfaction and preference between standard progressive addition lens (PAL) spectacles and a new type of free-form surfaced, optically customized PAL spectacle.

Study Details

Study Typeinterventional

Allocation--

Masking--

Primary Purpose--

ConditionsPresbyopia

CountriesUnited States

CollaboratorsCarl Zeiss Meditec, Inc.

Timeline

N/ACompletedFinished

200920102011201220132014201520162017201820192020202120222023202420252026

Enrollment StartFeb 2009

Primary CompletionOct 2009

First PostedNov 2010

TodayJul 2026

First PostedNov 4, 2010

Enrollment StartFeb 1, 2009

Primary CompletionOct 1, 2009

TodayJul 2, 2026

Enrollment to primary: 8 monthsPosted 15.7 years ago

Interventions

Standard, non-free-form, non-customized PAL spectaclesdevice

Control spectacles include several different PAL brands as selected by patients in the UC Berkeley Optometry Clinic and purchased in the Eyewear Center; after successful fitting and purchase, potential subjects were recruited for the trial.

Individually customized free-form surfaced PAL spectaclesdevice

Test spectacles are Zeiss Individual, free-form surfaced, and customized using the iTerminal device to account for individual back vertex distance, wrap angle and pantoscopic tilt