ClinicalTrials.gg
Sign In
RecruitingNCT04213053Updated Mar 15, 2024

Lees Screen in Concomitant Strabismus

An interventional study of strabismus surgery in Strabismus, sponsored by Minia University. Recruiting at 1 site in Egypt. Open to participants aged 10 Years to 40 Years. Per ClinicalTrials.gov, last updated 2024-03-15.

Sponsored by Minia University · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Primary completion was expected by Oct 2025, 1 year ago, but the record still lists the study as recruiting.
  • Started Jul 2020; still recruiting 6 years 4 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
24
Allocation
Not applicable
Ages
10 Years to 40 Years
Sex
All
01

Study summary

Preoperative and postoperative Lees screen was done after concomitant horizontal strabismus surgery to detect any limitation in the field of operated muscle

Read the detailed description

Preoperative and postoperative Lees screen was done for concomitant esotropia and exotropia patients to record any change in ocular motility as regards underaction or overaction in the operated extra ocular muscles

02

Conditions studied

  • Strabismus

Browse trials for

03

In context

Strabismus

142 studies on the registry are indexed under Strabismus; 31 are open to participants now.

This study's planned enrollment of 24 is below the median of 60 across 82 interventional studies indexed under Strabismus.

Browse Strabismus studies →

Lead sponsor

Minia University is the lead sponsor of 370 studies on the registry; 117 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Browse Minia University studies →

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

04

Who can participate

Ages eligible
10 Years to 40 Years
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

  • Concomitant esotropia
  • Concomitant exotropia
  • Above 10 years old patients

Exclusion criteria

Exclusion Criteria:

  • Restrictive and paralytic strabismus
  • Previous strabismus surgery
  • Mental disability
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
24 participants (estimated)

Study arms

  • Other
    Concomitant strabismus patients

    Horizontal strabismus surgery

    Procedure: strabismus surgery

Interventions

  • Procedurestrabismus surgery

    Lees screen before and after concomitant strabismus surgery

06

What researchers measure

Primary outcomes

  1. postoperative Lees screen

    detect any restriction in muscle field

    Time frame: 3 months

07

Study locations

1 of 1 sites recruiting
  • Faculty of Medicine
    Minya, Minia 61111, Egypt
    Recruiting
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

Started Jul 2020 (actual). Primary completion is estimated for Oct 2025, 63 months after the start.

Of 35 non-industry interventional studies with no phase under Strabismus, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 46. This study's planned 63 months is above that.

Counting every sponsor, half of 35 studies reached it within 17 months; a quarter within 8 and three quarters within 46.

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

Registered
Dec 24, 2019
First posted
Dec 30, 2019
StartActual
Jul 1, 2020
Primary completionEst.
Oct 30, 2025
CompletionEst.
Dec 1, 2025
Last update
Mar 15, 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 Mar 15, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04213053
Lead sponsor
Minia University
Responsible party
Mohamed Farag Khalil Ibrahiem (Assistant Professor, Minia University) — Principal investigator
First posted
Dec 30, 2019
Start date
Jul 1, 2020
Primary completion
Oct 30, 2025 (estimated)
Completion
Dec 1, 2025 (estimated)
Last update
Mar 15, 2024

Study contacts

Mohamed F Ibrahiem, MD
Contact
mohamedfka@yahoo.com
00201064311860
Sahar T Abelaziz, MD
Contact
sahar.torky@yahoo.com
00201065716074
Sahar TA Abdelaziz, MD
principal investigator · Minia University

Oversight

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

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

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.

Other studies in this condition

Strabismus →

Other studies from this sponsor

Minia University →

Start the discussion