Comparison of a Smartphone Based Self Refraction Tool With Conventional Refraction Error Estimation Methods

Refractive Errors Clinical Trial

Official title:

Comparison of a Smartphone Based Self Refraction Tool With Conventional Refraction Error Estimation Methods

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT03419351
• Other study ID #: smart-glass
• Status: Recruiting
• Phase: N/A
• First received: December 6, 2017
• Last updated: January 31, 2018
• Start date: November 20, 2017
• Est. completion date: March 31, 2018

Study information

• Verified date: January 2018
• Source: University Hospital Tuebingen
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Self evaluating tools based on smartphone devices are public available on the market for each person. The tools are used to estimate the existing refractive error for each eye of a patient. Hereafter, e.g. ordering glasses via internet could be the next step for this persons.

The daily routine within an eye hospital shows, that estimation of the refractive error is a difficult and time consuming procedure.

The study compares the results of the measured refractive error using a smartphone based tool with the results of conventional measurement methods.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 50
• Est. completion date: March 31, 2018
• Est. primary completion date: January 31, 2018
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• existing refractive error

• using glasses or contac lenses

Exclusion Criteria:

• opacities (visus limitating) of cornea, lens or vitreous

• known ocular pathologies except refractive error

• epilepsia

• irregular corneal topography

Related Conditions & MeSH terms

• Refractive Errors
• Self-Examination

Intervention

Diagnostic Test:
• Smartphone
Smartphone based measurement of refractive error and visual acuity testing using these measurements.
• Autorefractor
Autorefractor based measurement of refractive error and visual acuity testing using these measurements.
• Individual
Individual, human measurement of refractive error and visual acuity testing using these measurements.

Locations

Country	Name	City	State
Germany	University Eye Hospital	Tuebingen	BW

Sponsors (1)

Lead Sponsor	Collaborator
University Hospital Tuebingen

Country where clinical trial is conducted

Germany, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Refractive Error	Comparison of refractive error measurements between methods	6 month
Secondary	Visual acuity	Visual acuity of persons using based on different methods.	6 month
Secondary	Personal evaluation of measuring accuracy (Questionnaire)	Would persons be willing to order glasses by using only self-test-results?	6 month
Secondary	Time consumption	Comparison of needed time to reach self-test refraction error results and conservative-test results.	6 month