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The main purpose of this study was to identify electrophysiological predictive markers of post-correction visual comfort for presbyopic patients.
For each participant, presbyopia was compensated with contact lenses by monovision during three weeks and multifocality (three weeks again). A break of two weeks without any presbyopia compensation came in between the two phases of the test that were randomized.
All subjects were tested three times: before any compensation, after three weeks with monovsion and after three weeks with multifocality.
Each testing session was strictly the same including visual examinations and VEPs (visual evoked potentials).
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| contact lenses | Device | Presbyopia was compensated with contact lenses by monovision and multifocality. |
| Measure | Description | Time Frame |
|---|---|---|
| Visual acuity at baseline | near and distance visual acuity (Monoyer and Parinaud scales) | baseline |
| Measure | Description | Time Frame |
|---|---|---|
| electrophysiological recordings at baseline | monocular and binocular pattern Visual Evoked Potentials in response to a checkerboard pattern N75 and P100 components : amplitude, latency and topography | baseline |
| electrophysiological recordings change with monovision |
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Inclusion Criteria:
Exclusion Criteria:
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Adults with presbyopia
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| Name | Affiliation | Role |
|---|---|---|
| Pierre-Jean Pisella, MD, PhD | University Hospital, Tours | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University hospital Tours | Tours | 37000 | France |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 27107029 | Derived | Imbeau L, Majzoub S, Thillay A, Bonnet-Brilhault F, Pisella PJ, Batty M. Presbyopia compensation: looking for cortical predictors. Br J Ophthalmol. 2017 Feb;101(2):223-226. doi: 10.1136/bjophthalmol-2015-307581. Epub 2016 Apr 22. |
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| ID | Term |
|---|---|
| D011305 | Presbyopia |
| ID | Term |
|---|---|
| D012030 | Refractive Errors |
| D005128 | Eye Diseases |
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| ID | Term |
|---|---|
| D003261 | Contact Lenses |
| ID | Term |
|---|---|
| D007909 | Lenses |
| D055096 | Optical Devices |
| D004864 | Equipment and Supplies |
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monocular and binocular pattern Visual Evoked Potentials in response to a checkerboard pattern N75 and P100 components : amplitude, latency and topography |
| after 3 weeks with monovision contact lenses |
| electrophysiological recordings with multifocality | monocular and binocular pattern Visual Evoked Potentials in response to a checkerboard pattern N75 and P100 components : amplitude, latency and topography | after 3 weeks with multifocality contact lenses |
| quantitative measurement of stereopsis at baseline | TNO plates | baseline |
| quantitative measurement of stereopsis with monovision | TNO plates | after 3 weeks with monovision contact lenses |
| quantitative measurement of stereopsis with multifocality | TNO plates | after 3 weeks with multifocality contact lenses |
| Visual acuity change with monovision | near and distance visual acuity (Monoyer and Parinaud scales) | after 3 weeks with monovision contact lenses |
| Visual acuity change with multifocality | near and distance visual acuity (Monoyer and Parinaud scales) | after 3 weeks with multifocality contact lenses |