ClinicalTrials.gg
CompletedNCT02910362Updated Oct 11, 2018Results posted

Intra-surgical Evaluation of CATS Tonometer Prism and Abbott Medical Optics Versus Alcon Phacoemulsification Machines

An interventional study of Alcon phacoemulsification equipment and AMO phacoemulsification equipment in Cataract Surgery, sponsored by Intuor Technologies, Inc.. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-10-11.

Sponsored by Intuor Technologies, Inc. · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study will measure the dynamic real-time intraocular pressure (IOP) in the anterior chamber during standard phacoemulsification surgery.

What is known:

  • Fluidics control is determined to be one of the primary drivers of physician decision making in choosing phacoemulsification equipment.
  • Active pressure system fluidic control has a perceived and possibly real (based upon recent literature) improvement in intra-cameral IOP stability and reduced pressure fluctuations.
  • Improved fluidics can allow for reduced dynamic IOP fluctuations, in-the-bag positioned phaco tip, and intra-cameral fluid flow all of which will likely improve corneal health post-operatively.
02

Conditions studied

  • Cataract Surgery

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03

In context

Cataract

1,629 studies on the registry are indexed under Cataract; 235 are open to participants now.

This study's enrollment of 15 is below the median of 79 across 1,092 interventional studies indexed under Cataract.

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Lead sponsor

Intuor Technologies, Inc. is the lead sponsor of 7 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

    • Age 18 or greater

      • Bilateral cataracts for which phacoemulsification extraction and posterior IOL implantation has been planned for both eyes
      • Subjects able to give
      • Nuclear Sclerotic cataract graded 2+ or 3+
      • Naturally dilated pupil size (in dim light) > 4.0 mm (with no dilation medications) for both eyes
      • Preoperative corneal astigmatism of 2.5 D or less
      • Ages between 55 and 80
      • Availability, willingness, and sufficient cognitive awareness to comply with examination procedures

Exclusion criteria

Exclusion Criteria:

    • Uncontrolled systemic disease that in the opinion of the Investigator would put the subject's heath at risk

      • Intraoperative complications
      • Subjects with only one functional eye
      • Those with one eye having poor or eccentric fixation
      • Mild or severe cataracts, predominantly posterior subcapsular cataracts
      • High corneal astigmatism (i.e. those eyes displaying an oval contact image)
      • Those with corneal scarring or who have had corneal surgery including corneal laser surgery
      • Microphthalmos
      • Buphthalmos
      • Severe Dry eyes
      • Blepharospasm
      • Nystagmus
      • Keratoconus
      • Any other corneal or conjunctival pathology or infection.
      • Central corneal thickness greater than 0,600 mm or less than 0,500 mm (2 standard deviations about the human mean)
      • Acute or chronic disease or illness that would increase risk or confound study results (e.g. diabetes mellitus, , etc.)
      • Uncontrolled systemic or ocular disease
      • History of ocular trauma or prior ocular surgery
      • Fuchs Dystrophy
      • Subjects who may be expected to require retinal laser treatment or other surgical intervention, including LRI's
      • Capsule or zonular abnormalities that may affect postoperative centration or tilt of the lens (e.g. pseudoexfoliation syndrome)
      • Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils, or pupils that do not dilate at least 4.0 mm under mesopic/scotopic conditions)
      • Contact lens usage within 6 months for PMMA contacts lenses, 1 month for gas permeable lenses or 1 week for extended-wear and daily-wear soft contact lens
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

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Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

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05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    Alcon phacoemulsification equipment

    cataract surgery performed with the Alcon phacoemulsification equipment

    Device: Alcon phacoemulsification equipment

  • Active comparator
    AMO phacoemulsification equipment

    cataract surgery with the AMO phacoemulsification equipment

    Device: AMO phacoemulsification equipment

Interventions

  • DeviceAlcon phacoemulsification equipment

    cataract surgery with Alcon phacoemulsification equipment.

  • DeviceAMO phacoemulsification equipment

    cataract surgery with AMO phacoemulsification equipment.

06

What researchers measure

Primary outcomes

  1. Number of Eyes With Stable IOP

    Determine comparative IOP stability between Abbott and Alcon phacoemulsification equipment.

    Time frame: intraoperative

07

Results

Posted Jul 28, 2017
Limitations and caveats
small population size

Participant flow

From September 2016 until December 2016,15 patients were enrolled at Arizona Eye Consultants clinic

Participant flow — Overall Study
MilestoneAlcon Phacoemulsification EquipmentAMO Phacoemulsification Equipment
Started87
Completed87
Not completed00

Outcome measures

PrimaryNumber of Eyes With Stable IOP

Determine comparative IOP stability between Abbott and Alcon phacoemulsification equipment.

Time frame:
intraoperative
Reported as:
Number · Eyes
Number of Eyes With Stable IOP
EyesAlcon Phacoemulsification EquipmentAMO Phacoemulsification Equipment
Number of Eyes With Stable IOP1614

Adverse events

Collected over 4 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Alcon Phacoemulsification Equipment0/7 (0%)0/7 (0%)0/7 (0%)
AMO Phacoemulsification Equipment0/7 (0%)0/7 (0%)0/7 (0%)

Baseline characteristics

16 eyes from 8 subjects for Alcon equipment and 14 eyes from 7 subjects for AMO.

Age, Continuous
Age, Continuous(years)Alcon Phacoemulsification EquipmentAMO Phacoemulsification EquipmentTotal
Mean66 ± 866 ± 866 ± 8
Sex: Female, Male
Sex: Female, Male(Participants)Alcon Phacoemulsification EquipmentAMO Phacoemulsification EquipmentTotal
Female549
Male336
Region of Enrollment
Region of Enrollment(Participants)Alcon Phacoemulsification EquipmentAMO Phacoemulsification EquipmentTotal
United States8715
08

Study locations

1 site
  • Arizona Eye Consultants
    Tucson, Arizona 85710, United States
09

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 11, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02910362
Lead sponsor
Intuor Technologies, Inc.
Responsible party
Sponsor
First posted
Sep 22, 2016
Start date
Sep 2016
Primary completion
Jan 2017
Completion
Jan 2017
Results posted
Jul 28, 2017
Last update
Oct 11, 2018

Study contacts

Sean McCafferty, MD
principal investigator · Arizona Eye Consultants

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2018. You cannot join it, but the record below documents what was studied.

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