Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
30 participants
OBSERVATIONAL
2012-06-30
2013-08-31
Brief Summary
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Patient satisfaction and quality of vision will also be assessed by way of a questionnaire.
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Detailed Description
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Subjective Refraction will be performed to establish any residual refractive error will for distance, intermediate and near.
Defocus Profiles (visual acuity over imposed defocus) are measured for each patient. The patient observes the 6m LogMAR chart through best distance correction, then defocusing is achieved by the addition of pairs of lenses from +2.00D to -4.00D in 0.50D steps.. The LogMAR acuity will be recorded and the data plotted.
Contrast Sensitivity will be evaluated monocularly under photopic (85cd/m2) conditions and mesopic (4cd/m2) using the Pelli-Robson Contrast Sensitivity Chart.
Near and intermediate performance will be evaluated using the Radner Reading Charts to assess acuity (LogRAD units) and reading speed in photopic conditions 85cd/m2
Conditions
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Study Design
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COHORT
RETROSPECTIVE
Eligibility Criteria
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Inclusion Criteria
* Bilateral implantation of a trifocal intraocular lens
Exclusion Criteria
* surgical complications
* corneal astigmatism \> 1.50DC
40 Years
70 Years
ALL
Yes
Sponsors
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BMI Southend Hospital
OTHER
Responsible Party
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Elizabeth Agrippa
Optometrist
Principal Investigators
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Elizabeth M Agrippa, BSc
Role: PRINCIPAL_INVESTIGATOR
BMI Southend
Locations
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BMI Southend Hospital
Westclifff-on-Sea, Essex, United Kingdom
Countries
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Facility Contacts
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Other Identifiers
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TRI 1.1
Identifier Type: -
Identifier Source: org_study_id
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