Corrective eye surgeries, such as Lasik, are widely used to correct focusing problems such as myopia, or nearsightedness. Often these patients develop other conditions like myopic maculopathy or glaucoma which require monitoring with optical coherence tomography (OCT). Since OCT is a light-based test and changes the refractive status of the eye (in the cornea or the lens), it can potentially affect the results of the OCT measurements but has not been sufficiently studied. This pilot study aims at studying the potential change in OCT parameters in the eye after undergoing such surgery.
Refractive surgeries are widely used in patients with ametropia. Refractive surgery is most commonly performed in patients with myopia. These patients often have a predilection for developing other conditions in the posterior segment of the eye, like myopic maculopathy or glaucoma which require monitoring with optical coherence tomography (OCT). Since OCT is a light-based test and changes in the refractive status of the eye (in the cornea or the lens) can potentially affect the results of the OCT measurements. Literature review reveals that the effect of significant changes in refractive power of the eye on the parameters of optical coherence tomography (OCT) has not been sufficiently studied. Some authors simulated the effect of refractive surgery using a contact lens but had diverging results. This prospective pilot study aims at studying the potential change in OCT parameters in the eye after undergoing refractive surgery.
Study Type
OBSERVATIONAL
Enrollment
33
Posterior segment OCT (a non-contact procedure performed over one minute) is additionally performed for patients participating in this study. Proportion of change in measurements in microns will be analyzed.
Unversity of Nebraska Medical Center
Omaha, Nebraska, United States
RECRUITINGMacular thickness
Proportion of Change in thickness of retina and its layers measured in microns
Time frame: 1 day after refractive procedure
Macular thickness
Proportion of Change in thickness of retina and its layers measured in microns
Time frame: 1 week after refractive procedure
Choroidal thickness
Proportion of Change in thickness of choroid and its layers measured in microns
Time frame: 1 day after refractive procedure
Choroidal thickness
Proportion of Change in thickness of choroid and its layers measured in microns
Time frame: 1 week after refractive procedure
visual acuity
Proportion of Change in clarity of vision, measured in logarithm of Minimal Angle of Resolution (logMAR) units
Time frame: 1 day after refractive procedure
visual acuity
Proportion of Change in clarity of vision, measured in logarithm of Minimal Angle of Resolution (logMAR) units
Time frame: 1 week after refractive procedure
central corneal thickness
Proportion of Change in thickness of cornea measured in microns
Time frame: 1 day after refractive procedure
central corneal thickness
Proportion of Change in thickness of cornea measured in microns
Time frame: 1 week after refractive procedure
anterior chamber depth
Proportion of Change in depth of anterior chamber of the eye measured in microns
Time frame: 1 day after refractive procedure
anterior chamber depth
Proportion of Change in depth of anterior chamber of the eye measured in microns
Time frame: 1 week after refractive procedure
keratometry
Proportion of Change in corneal curvature measured in diopters
Time frame: 1 day after refractive procedure
keratometry
Proportion of Change in corneal curvature measured in diopters
Time frame: 1 week after refractive procedure
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