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An Observational Study of Dry Eye Prior to Laser-Assisted in Situ Keratomileusis (LASIK) Therapy

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01854905
Enrollment
400
Registered
2013-05-16
Start date
2013-05-31
Completion date
2013-09-30
Last updated
2014-03-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dry Eye Syndromes

Brief summary

This is an observational, study of dry eye in patients at the consultation visit prior to LASIK surgery. There is no treatment administered or intervention during the study.

Interventions

OTHERNo Treatment

Patients attending consultation for LASIK on Day 1. No intervention or treatment is administered during the study.

Sponsors

Allergan
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Attending an ophthalmology consultation for LASIK

Exclusion criteria

* None

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) ScaleDay 1The severity of each patient's dry eye was classified by the physician according to the DEWS scale. Categories are: mild and/or episodic, occurs under environmental stress; moderate episodic or chronic, stress or no stress; and severe frequent or constant without stress

Countries

Russia

Participant flow

Participants by arm

ArmCount
Patients Attending Consultation for LASIK
Patients attending consultation for LASIK on Day 1. No intervention or treatment is administered during the study.
400
Total400

Baseline characteristics

CharacteristicPatients Attending Consultation for LASIK
Age, Continuous29.7 Years
STANDARD_DEVIATION 9.97
Sex: Female, Male
Female
263 Participants
Sex: Female, Male
Male
137 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 0
serious
Total, serious adverse events
0 / 0

Outcome results

Primary

Percentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) Scale

The severity of each patient's dry eye was classified by the physician according to the DEWS scale. Categories are: mild and/or episodic, occurs under environmental stress; moderate episodic or chronic, stress or no stress; and severe frequent or constant without stress

Time frame: Day 1

Population: All enrolled patients

ArmMeasureGroupValue (NUMBER)Dispersion
Patients Attending Consultation for LASIKPercentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) ScaleMild and/or episodic, occurs under stress65.0 Percentage of Patients 25.97
Patients Attending Consultation for LASIKPercentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) ScaleModerate episodic or chronic, stress or no stress29.0 Percentage of Patients
Patients Attending Consultation for LASIKPercentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) ScaleSevere frequent or constant without stress4.2 Percentage of Patients
Patients Attending Consultation for LASIKPercentage of Patients in Each Category of the Dry Eye Workshop Severity (DEWS) ScaleData unavailable1.8 Percentage of Patients

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026