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CompletedNCT03193411Updated Jun 20, 2017

Visumax Femtolasik Versus Moria M2 Microkeratome in Myopia

An interventional study of Visumax femtosecond laser and Moria M2 microkeratome (MK) in Lasik in Myopia, sponsored by Dar Al Shifa Hospital. Completed. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2017-06-20.

Sponsored by Dar Al Shifa Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 5 months after the study started (first participant enrolled Jan 2014, registered Jun 2017).
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Non-randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

this is an interventional prospective clinical study which was conducted to evaluate the efficacy, safety, predictability, ocular aberrations, and flap thickness predictability of Visumax femtosecond laser (FSL) compared to Moria M2 microkeratome (MK) in mild to moderate myopia.

Read the detailed description

This study included 60 eyes who were divided into two groups. Thirty eyes in group (I) in which the flap was created with Visumax FSL, while in group II (30 eyes) the Moria M2 MK was used. Keratometric, refractive, and aberrometric measurements were compared preoperatively and 3 months postoperatively. The intraoperative subtraction pachymetry (the SP 100 Handy pachymeter (Tomey, Nagoya, Japan) was used for preoperative pachymetry and flap thickness measurement.

02

Conditions studied

  • Lasik in Myopia

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03

In context

Myopia

1,159 studies on the registry are indexed under Myopia; 225 are open to participants now.

This study's enrollment of 30 is below the median of 78 across 923 interventional studies indexed under Myopia.

Browse Myopia studies →

Lead sponsor

Dar Al Shifa Hospital is the lead sponsor of 5 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 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

  • Male and female patients were eligible for the study if they were older than 18 years and younger than 40 years.
  • Stable myopia up to -6.0D and astigmatism up to -3.0D determined by manifest refraction for at least 6 months.
  • best corrected distance visual acuity of at least 20/20, and stable keratometry after cessa¬tion of soft contact lens wear for at least 2 weeks.

Exclusion criteria

Exclusion Criteria:

  • any anterior seg¬ment pathology.
  • any form of retinal degeneration. unstable myopia.
  • severe dry eye.
  • corneal thickness that would have resulted in less than 300 µm residual stromal thickness.
  • Patients who had keratoconus or were keratoconus suspects.
  • previous ocular sur¬gery.
  • a history of herpes zoster ophthalmicus or herpes simplex keratitis.
  • a history of a -responsive rise in in¬traocular pressure (IOP) or a preoperative IOP of more than 21 mmHg.
  • diabetes mellitus, dis¬ease, connective tissue disease, and chronic use of systemic corticosteroid or therapy were also excluded from the study.
Terms in these criteria, in plain language(3)

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.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

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.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
30 participants (actual)

Study arms

  • Other
    microkeratome group

    30 eyes were treated by microkeratome

    Device: Moria M2 microkeratome (MK)

  • Other
    femtosecond group

    30 eyes were treated by femtosecond laser

    Device: Visumax femtosecond laser

Interventions

  • DeviceVisumax femtosecond laser
  • DeviceMoria M2 microkeratome (MK)
06

What researchers measure

Primary outcomes

  1. visual outcomes

    uncorrected and best corrected distant visual acuity in LogMAR

    Time frame: 6 months

  2. refractive outcomes

    sphere in diopter, cylinder in diopter cylinder and spherical equivalent in diopter

    Time frame: 6 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Torky MA, Al Zafiri YA, Khattab AM, Farag RK, Awad EA. Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability. BMC Ophthalmol. 2017 Jul 17;17(1):125. doi: 10.1186/s12886-017-0520-5. PubMed 28716114 ↗

Individual participant data

Plan to share: No

09

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 Jan 2014 to primary completion in May 2014, 4 months.

Of 200 non-industry interventional studies with no phase under Myopia, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 44. This study's 4 months is below that.

Counting every sponsor, half of 434 studies reached it within 14 months; a quarter within 3 and three quarters within 34.

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

Registered
Jun 15, 2017
First posted
Jun 20, 2017
StartActual
Jan 2014
Primary completionActual
May 29, 2014
CompletionActual
Jun 2014
Last update
Jun 20, 2017
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 Jun 20, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03193411
Lead sponsor
Dar Al Shifa Hospital
Responsible party
magda torky (priniciple investigator, Dar Al Shifa Hospital) — Principal investigator
First posted
Jun 20, 2017
Start date
Jan 2014
Primary completion
May 29, 2014
Completion
Jun 2014
Last update
Jun 20, 2017

Study contacts

Magda Torky
principal investigator · daralshifa hospital

Oversight

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 Jun 2017. You cannot join it, but the record below documents what was studied.

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