ClinicalTrials.gg
CompletedNCT04971863Updated Jan 31, 2024

In-vivo Behavior of Asqelio Monofocal Biaspheric Intraocular Lens

An observational study in Cataract and Intraocular Lens Complication, sponsored by AST Products, Inc.. Completed at 1 site in Spain. Open to participants aged 22 Years and older. Per ClinicalTrials.gov, last updated 2024-01-31.

Sponsored by AST Products, Inc. · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
200
Ages
22 Years and older
Sex
All
01

Study summary

This is a study to evaluate the 24 month postoperative incidence and intensity of posterior capsular opacity in patients submitted to cataract surgery and implanted with a hydrophobic monofocal IOL.

Read the detailed description

This study is a two-arm masked clinical evaluation study of incidence of PCO after successful bilateral cataract surgery with implantation of a monofocal IOL. Subjects will be assessed 24 months after IOL implantation. Clinical evaluations will include incidence of adverse events, patient satisfaction questionnaire, as well as measurements of visual performance, optical quality, presence and intensity of PCO, presence and intensity of IOL glistening.

02

Conditions studied

  • Cataract
  • Intraocular Lens Complication

Browse trials for

Keywords

  • posterior capsule opacitication
  • incidence
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 200 is above the median of 89 across 475 observational studies indexed under Cataract.

Browse Cataract studies →

Lead sponsor

AST Products, Inc. is the lead sponsor of 11 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
22 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult subjects submitted to non-traumatic cataract surgery in at least 1 eye at the Hospital La Fé of Valencia, Spain

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

  • Subjects 22 years or older submitted to cataract surgery in at least 1 eye and implanted with Asqelio monofocal or Clareon monofocal IOL

Exclusion criteria

Exclusion Criteria:

  • Any pathology reducing potential best-corrected visual acuity beyond 0.30 LogMAR, including amblyopia, severe corneal dystrophy, diabetic retinopathy, extremely shallow anterior chamber, microphthalmos, retinal detachment, severe recurrent anterior or posterior segment inflammation of unknown ethiology, iris neovascularization, uncontrolled glaucoma, macular degeneration, or pseudoexfoliation diagnosis.
  • Previous ocular surgery
  • Rubella
  • Surgery motivated by traumatic cataract
  • Ocular trauma or refractive surgery
  • Any other systemic or ocular condition that, in the investigator's opinion, should exclude the subject from study
  • Requiring additional procedures due to intraoperatory complications, mechanical or surgical interventions for manipulating the pupil, excessive iris movility, significant vitreous loss, significant, anterior chamber hyphema, capsular annular breakage, or any other unrecognized ocular conditions that might compromise IOL positioning, as well as impossibility of locate the IOL in the capsular bag due to surgical complications.
Terms in these criteria, in plain language(1)

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
200 participants (actual)
Patient registry
No

Groups and cohorts

  • Clareon Monofocal IOL

    Patients bilaterally implanted with the Clareon monofocal IOL

  • Asqelio Monofocal IOL

    Patients bilaterally implanted with the Asqelio monofocal IOL

06

What researchers measure

Primary outcomes

  1. Incidence of Posterior capsular opacity

    Incidence of PCO

    Time frame: 24 months after IOL implantation

  2. Intensity of Posterior capsular opacity

    Intensity of PCO determined using LOCSIII Classification System

    Time frame: 24 months after IOL implantation

Secondary outcomes

  1. Visual acuity

    Best corrected distance visual acuity in LogMAR units using the ETDRS chart

    Time frame: 1 month, 6 months, 12 months and 24 months after IOL implantation

  2. Refraction

    Residual refractive error in diopters determined objectively

    Time frame: 1 month, 6 months, 12 months and 24 months after IOL implantation

  3. Optical quality

    Higher-order wavefront aberrations determined using a clinical wavefront analyzer

    Time frame: 24 months after IOL implantation

  4. Incidence of Glistening

    Incidence of IOL glistening

    Time frame: 24 months after IOL implantation

  5. Intensity of Glistening

    Intensity of IOL glistening

    Time frame: 24 months after IOL implantation

07

Study locations

1 site
  • Hospital Universitario y Politécnico la Fe
    Valencia, Spain
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2022 to primary completion in Oct 2023, 19 months.

Of 67 industry-sponsored observational studies under Cataract, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 35. This study's 19 months is above that.

Counting every sponsor, half of 234 studies reached it within 16 months; a quarter within 9 and three quarters within 30.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 12, 2021
First posted
Jul 22, 2021
StartActual
Mar 30, 2022
Primary completionActual
Oct 31, 2023
CompletionActual
Jan 5, 2024
Last update
Jan 31, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 31, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04971863
Lead sponsor
AST Products, Inc.
Collaborators
Hospital Universitario La Fe
Responsible party
Sponsor
First posted
Jul 22, 2021
Start date
Mar 30, 2022
Primary completion
Oct 31, 2023
Completion
Jan 5, 2024
Last update
Jan 31, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion