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

Turku University Hospital17 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Generalized Visual Field Contraction or Constriction

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * No disease that effect the fundus photograph or visual field Exclusion Criteria: * any disease that effects the fundus photograph or visual field

Locations (1)

Turku University Hospital

Turku, Finland

Outcomes

Primary Outcomes

Macula-disc centre distance

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

Time frame: one measurement at the start of the study

Secondary Outcomes

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.

Time frame: one measurement at the start of the study

Data from ClinicalTrials.gov

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