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
20 participants
OBSERVATIONAL
2021-09-01
2021-12-20
Brief Summary
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Purpose of the study is to record voltage data of 20 consecutive cataract surgeries in order to evaluate correlation between voltage and LOCS classification of lens nuclei using a system that deploys a feedback mechanism capable of keeping invariant elongation regardless of enountered resistence
Detailed Description
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After priming in balanced salt solution, phaco tip elongation and the amount of potential difference (voltage) needed to obtain a ginev elongation in balanced solution is assessed. Once the phaco tip is used during surgery, the resistence offered by the crystalline lens material to the phaco tip reduces actual elongaton which in turn reduces the voltage produced by the directo piezometric effect. The machine uses voltage produced by actual elongation to adjust the diving voltage and therefore can ensure accurate pahco tip elongation under any condition of lens material resistance.
Purpose of the study is to record driving voltage and its variations and evaluate if there is a correlation between phaco tip resistence and drving voltage.
This is evaluated both in vitro activating the phaco tip in increasingly dense glycerol solutions and in real life phaco surgery recording the voltage requested by phaco tip resistence and correlating it to the classification of lens opacity (LOCS III system) clinically used to grade cataract hardness.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria: previous ocular trauma, previous ocular surgery, connective tissue disease
18 Years
90 Years
ALL
No
Sponsors
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Ospedale Policlinico San Martino
OTHER
Responsible Party
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Principal Investigators
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Tommaso Rossi, MD
Role: PRINCIPAL_INVESTIGATOR
IRCCS Policlinico San MArtino
Locations
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IRCCS Policlinico San Martino
Genoa, , Italy
Countries
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Central Contacts
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Facility Contacts
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Tommaso Rossi
Role: primary
Other Identifiers
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1/2021
Identifier Type: -
Identifier Source: org_study_id