A Study to Determine the Location of the Blind Spot and the Macula-disc Centre Distance on a Fundus Photograph

The study is aimed to develop a new reaction-time based method for examining the visual field and to study the effect of refractive error on the magnification of a fundus photograph in order to evaluate the true size of a retinal feature.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Generalized Visual Field Contraction or Constriction Constriction, Pathologic Pathological Conditions, Anatomical Pathological Conditions, Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Turku University Hospital

Turku, 20521, Finland

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

No disease that effect the fundus photograph or visual field

Exclusion criteria

any disease that effects the fundus photograph or visual field

Treatment and study plan

Primary outcomes

Macula-disc centre distance

Time frame: one measurement at the start of the study

Measurement is done on a fundus photograph (one visit and one examination for each patient)

Secondary outcomes

Location of the blind spot

Time frame: one measurement at the start of the study

The location of the blind spot is screened using Octopus custom made visual field program at the one visit (one visit and one study for each patient) and a novel reaction-time based visual field device.

Sponsors and collaborators

Lead sponsor

Turku University Hospital

Other Gov

Registry information

Official study title

A Study to Develop Both a Novel Method for Evaluating the True Size of a Retinal Object on Fundus Photographs and a New Reaction-time Based Method for Studying the Visual Field on Healthy Volunteers

Important dates

Study start: 2013
Primary completion: 2014
Study completion: 2014
First posted: Apr 30, 2013
Registry last updated: Feb 27, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed