COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH:

Key Record Dates Identifier: NCT03475147
Brief Title: Smartphone Flicker Fusion Test for Patients With Optic Disorders.

First Submitted : March 16, 2018
First Submitted that Met QC Criteria : March 16, 2018
First Posted : March 23, 2018

Last Update Submitted that Met QC Criteria : January 16, 2020
Last Update Posted : January 21, 2020