Generalized Visual Field Contraction or Constriction Clinical Trial
Official 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
| Verified date | May 2013 |
| Source | Turku University Hospital |
| Contact | n/a |
| Is FDA regulated | No |
| Health authority | Finland: Ethics Committee |
| Study type | Observational [Patient Registry] |
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.
| Status | Completed |
| Enrollment | 17 |
| Est. completion date | November 2014 |
| Est. primary completion date | August 2014 |
| Accepts healthy volunteers | Accepts Healthy Volunteers |
| Gender | Both |
| Age group | 18 Years and older |
| Eligibility |
Inclusion Criteria: - No disease that effect the fundus photograph or visual field Exclusion Criteria: - any disease that effects the fundus photograph or visual field |
Observational Model: Case-Only, Time Perspective: Cross-Sectional
| Country | Name | City | State |
|---|---|---|---|
| Finland | Turku University Hospital | Turku |
| Lead Sponsor | Collaborator |
|---|---|
| Turku University Hospital |
Finland,
| Type | Measure | Description | Time frame | Safety issue |
|---|---|---|---|---|
| Primary | Macula-disc centre distance | Measurement is done on a fundus photograph (one visit and one examination for each patient) | one measurement at the start of the study | Yes |
| Secondary | Location of the blind spot | 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. | one measurement at the start of the study | Yes |