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Intraocular Lens Power Calculation After Laser Refractive Surgery Based on Optical Coherence Tomography
Sponsor: Oregon Health and Science University
Summary
The long-term goal of this project is to utilize very high-speed optical coherence tomography (OCT) technology to guide surgical treatments of corneal diseases. OCT is well known for its exquisite resolution, but until recently it has not had sufficient speed to capture the shape of the cornea because of eye motion during OCT scanning. The development of Fourier-domain (FD) OCT technology has made the requisite speed possible. The objective of this project is to develop methods for imaging the cornea with an FD-OCT system that will precisely measure corneal shape and use this information to guide surgery. Cataract surgery in patients with previous laser vision correction often leads to significant near- or far-sightedness, a problem that could be resolved by using a more accurate intraocular lens power selection formula based on the measurement of corneal refractive power with OCT.
Official title: Guiding the Treatment of Anterior Eye Diseases With Optical Coherence Tomography
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
OBSERVATIONAL
Enrollment
690
Start Date
2011-04
Completion Date
2026-07
Last Updated
2024-02-12
Healthy Volunteers
No
Conditions
Interventions
OCT measurements
This study is about a new imaging method to study the front part of the eye. This imaging method is called Optical Coherence Tomography (OCT) which provides detailed cross-sectional (layered) views of structures in the eye. The OCT system scans a beam of light across the eye to take a picture. OCT provides a more detailed image than other imaging methods of the eye such as ultrasound, CT scan (computed tomography), and MRI (magnetic resonance imaging). In addition, OCT imaging does not touch the eye. OCT is routinely used in imaging structures in the back of the eye (retina) and cornea. This study uses high-speed FDA approved OCT systemsThe measurements from the OCT systems are used in selecting IOL power.
Locations (1)
Casey Eye Institute, Oregon Health & Science University
Portland, Oregon, United States