Prospective S&E Study of Wavefront-guided PRK for Myopia With iDesign Advanced Wavescan Studio™ System and Star S4 IR™

This is an interventional treatment trial for Stable Myopic Refractive Error, With or Without Astigmatism focused on measuring myopia Read More

NOTE: Enrollment open only to military personnel

Inclusion Criteria:

• Signed informed consent and HIPAA authorization.
• Refractive error, based on the iDesign displayed refraction must be myopia with or without astigmatism with sphere up to -8.00 D, and cylinder between 0.00 D and -4.00 D with maximum SE of -10.00 D.
• Anticipated residual stromal bed thickness of at least 250 microns as calculated by the iDesign system.
• Distance Best Spectacle Corrected Visual Acuity (BSCVA) of 20/20 or better
• BSCVA ≥2 lines (≥10 letters) better than distance Uncorrected Visual Acuity (UCVA).
• Less than or equal to 0.75 D difference between cycloplegic and manifest refraction sphere.
• Stable refractive error as defined by a change of ≤1.00 D in MRSE over at least a 12 month time period.
• Any subject eye with a history of contact lens wear within the last 4 weeks must demonstrate refractive stability
• Agreement between manifest refraction (adjusted for optical infinity) and iDesign System refraction chosen for treatment.
• Willing and capable of complying with follow-up examinations for the duration of the study.

Exclusion Criteria:

• Women who are pregnant, breast-feeding, or intend to become pregnant, or not using an adequate method of birth control.
• Concurrent use of systemic (including inhaled) medications that may impair healing.
• History of any of the following medical conditions, or any other condition that could affect wound healing: collagen vascular disease, autoimmune disease, immunodeficiency diseases, ocular herpes zoster or herpes simplex, endocrine disorders (including, but not limited to unstable thyroid disorders and diabetes), lupus, and rheumatoid arthritis.
• Subjects with a cardiac pacemaker, implanted defibrillator or other implanted electronic device.
• History of prior intraocular or corneal surgery, active ophthalmic disease or abnormality, retinal detachment/repair, clinically significant lens opacity, clinical evidence of trauma, corneal opacity within the central 9 mm and visible on topography, at risk for developing strabismus, or with evidence of glaucoma or propensity for narrow angle glaucoma.
• Evidence of keratoconus, corneal dystrophy or irregularity, or abnormal topography
• Known sensitivity or inappropriate responsiveness to any of the medications used in this study.
• If either eye does not meet all inclusion criteria
• Desire to have monovision.
• Participation in any other clinical study, with the exception of the fellow eye in this study.