Aniseikonia Clinical Trial
Official title:
Can we Measure Aniseikonia Tolerance in a Normal Population
NCT number | NCT03832335 |
Other study ID # | 04127 |
Secondary ID | |
Status | Recruiting |
Phase | |
First received | |
Last updated | |
Start date | July 2015 |
Est. completion date | December 2020 |
Verified date | February 2019 |
Source | Glostrup University Hospital, Copenhagen |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
Population 1:
Measure the effect of size glasses from1-9% on stereopsis
Population 2:
Measure the effect of size glasses from 1-9% on stereopsis in two settings:
- before and after cataract surgery
- after dilation of the eye
Status | Recruiting |
Enrollment | 31 |
Est. completion date | December 2020 |
Est. primary completion date | August 2, 2019 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 60 Years to 95 Years |
Eligibility |
Inclusion Criteria: - No previous eye history - cataract grade <= 1 - visual acuity above 0.8 Exclusion Criteria: - lack of cooperation - amblyopia - axial anisometropia - ametropia |
Country | Name | City | State |
---|---|---|---|
Denmark | Rigshospitalet-glostrup | Glostrup | Danmark |
Lead Sponsor | Collaborator |
---|---|
Glostrup University Hospital, Copenhagen |
Denmark,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Aniseikonia tolerance | How many percent aniseikonia is tolerated before stereopsis is impaired. Measured by first measuring baseline stereopsis and here after adding aniseikonic (size glass) from 1-9% in front of the right and left eye to measure if stereopsis is impaired. If stereopsis is impaired at 4% sizeglas then aniseikonia tolerance is 4%. | baseline | |
Primary | Change of Aniseikonia tolerance after surgery | Measurement of aniseikonia tolerance before and after surgery. Measurement: before and after surgery stereopsis is measured, hereafter aniseikonic glasses (size glass) from 1-9% is added in front of the right and left eye to see if stereopsis is impaired. If stereopsis is impaired with 3% aniseikonic glass then the tolerance is 3%. After surgery the measurement is repeated to examine if the aniseikonia tolerance is the same. | six weeks after surgery |
Status | Clinical Trial | Phase | |
---|---|---|---|
Recruiting |
NCT05325021 -
Correction of Anisometropic Amblyopia in Children.
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