Clinical trialNCT02627339CompletedObservational

Building a Database of Results From People Without Eye Problems

SponsorWills EyeEnrollment208Glaucoma

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of this study is to build a database of results from a new test that measures contrast sensitivity (the Spaeth-Richman Contrast Sensitivity Test (SPARCS)). Contrast sensitivity is an important part of your ability to see. When contrast sensitivity decreases, you are less able to see objects and detect motion. For instance, if you have decreased contrast sensitivity, you might be less able to read, see in the dark, drive, hit a ball, or walk safely. Decrease in contrast sensitivity leads to a decrease in quality of life.

clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

George L Spaeth, MD
Medical Director, Glaucoma Research Center
Principal InvestigatorKOL profile →
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Wills Eye Glaucoma Service
Philadelphia, Pennsylvania, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 31 Aug 2012
Primary completion: 31 Aug 2015
Completion: 31 Aug 2015
Last update posted: 21 Nov 2016
Registered enrollment: 208
Registry id: NCT02627339

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.