Brief Summary
The purpose of this research is to determine if an investigational thin shield over the cornea can safely and effectively reduce or eliminate pain following Post Photorefractive Keratectomy (PRK).
The thin shield is made of silicone. The materials used to make the corneal shield all have a history of use in medical devices, contact lenses, and/or corneal shields and have been used safely in the eye.
The thin shield is made of silicone. The materials used to make the corneal shield all have a history of use in medical devices, contact lenses, and/or corneal shields and have been used safely in the eye.
Brief Title
Post Photorefractive Keratectomy (PRK) Use of an Eye Shield for Maintaining Vision and Mitigating Pain
Detailed Description
See above
Categories
Completion Date
Completion Date Type
Actual
Conditions
Pain
Vision Nearsighted
Eligibility Criteria
Inclusion criteria.
* Subjects age 18 and older with healthy eyes.
* Nearsightedness between -0.50 diopters and -11.00 diopters with or without astigmatism of up to 3.50 diopters.
Exclusion criteria.
* Subjects under the age of 18.
* Patients with excessively thin corneas.
* Patients with topographic evidence of keratoconus.
* Patients with ectactic eye disorders.
* Patients with autoimmune diseases.
* Patients who are pregnant or nursing.
* Any other anterior segment abnormality other than that associated with PRK
* Any abnormalities associated with the eye lids
* Uncontrolled blepharitis or dry eye
* Prior laser treatment of the retina
* Any ophthalmic surgery performed within three (3) months prior to study excluding PRK or LASIK
* Diagnosis of glaucoma
* Active diabetic retinopathy
* Clinically significant inflammation or infection within six (6) months prior to study
* Uncontrolled systemic disease (e.g., diabetes, hypertension, etc.) in the opinion of the Investigator
* Participation in any study involving an investigational drug within the past 30 calendar days, or ongoing participation in a study with an investigational material
* Intolerance or hypersensitivity to topical anesthetics, antibiotics, steroids or any other pharmaceuticals that may be used pre and post surgically Specifically known intolerance or hypersensitivity to contact lenses or any component of the investigative material
* A medical condition, serious concurrent illness, or extenuating circumstance that would significantly decrease study compliance, including all prescribed follow-up
* Any condition that, in the opinion of the investigator, would jeopardize the safety of the patient
* Subjects age 18 and older with healthy eyes.
* Nearsightedness between -0.50 diopters and -11.00 diopters with or without astigmatism of up to 3.50 diopters.
Exclusion criteria.
* Subjects under the age of 18.
* Patients with excessively thin corneas.
* Patients with topographic evidence of keratoconus.
* Patients with ectactic eye disorders.
* Patients with autoimmune diseases.
* Patients who are pregnant or nursing.
* Any other anterior segment abnormality other than that associated with PRK
* Any abnormalities associated with the eye lids
* Uncontrolled blepharitis or dry eye
* Prior laser treatment of the retina
* Any ophthalmic surgery performed within three (3) months prior to study excluding PRK or LASIK
* Diagnosis of glaucoma
* Active diabetic retinopathy
* Clinically significant inflammation or infection within six (6) months prior to study
* Uncontrolled systemic disease (e.g., diabetes, hypertension, etc.) in the opinion of the Investigator
* Participation in any study involving an investigational drug within the past 30 calendar days, or ongoing participation in a study with an investigational material
* Intolerance or hypersensitivity to topical anesthetics, antibiotics, steroids or any other pharmaceuticals that may be used pre and post surgically Specifically known intolerance or hypersensitivity to contact lenses or any component of the investigative material
* A medical condition, serious concurrent illness, or extenuating circumstance that would significantly decrease study compliance, including all prescribed follow-up
* Any condition that, in the opinion of the investigator, would jeopardize the safety of the patient
Inclusion Criteria
Inclusion criteria.
* Subjects age 18 and older with healthy eyes.
* Nearsightedness between -0.50 diopters and -11.00 diopters with or without astigmatism of up to 3.50 diopters.
* Subjects age 18 and older with healthy eyes.
* Nearsightedness between -0.50 diopters and -11.00 diopters with or without astigmatism of up to 3.50 diopters.
Gender
All
Gender Based
false
Keywords
Corneal shield
PRK
Myopia
Pain
Vision
Healthy Volunteers
No
Last Update Post Date
Last Update Post Date Type
Actual
Last Update Submit Date
Minimum Age
18 Years
NCT Id
NCT01592643
Org Class
Other
Org Full Name
Stanford University
Org Study Id
22760
Overall Status
Completed
Phases
Not Applicable
Primary Completion Date
Primary Completion Date Type
Actual
Official Title
Post Photorefractive Keratectomy (PRK) Use of an Eye Shield for Maintaining Vision and Mitigating Pain
Primary Outcomes
Outcome Measure
Number of Participants With Pain Score of Four or Greater. Score Range: 0-10, Higher Score Corresponds to More Pain.
Outcome Time Frame
Day 30
Secondary Outcomes
Outcome Description
LogMAR uncorrected visual acuity. Values closer to zero indicate improved vision
Outcome Time Frame
Six months
Outcome Measure
Mean Change in Uncorrected Visual Acuity
Start Date
Start Date Type
Actual
Status Verified Date
First Post Date
First Post Date Type
Estimated
First Submit Date
First Submit QC Date
Std Ages
Adult
Older Adult
Maximum Age Number (converted to Years and rounded down)
999
Minimum Age Number (converted to Years and rounded down)
18
Investigators
Investigator Type
Principal Investigator
Investigator Name
Roy Chuck
Investigator Email
RCHUCK@montefiore.org
Investigator Phone