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Interocular high-order corneal wavefront aberration symmetry.
Marco Lombardo1, Giuseppe Lombardo, Sebastiano Serrao
1Department of Experimental and Clinical Medicine, University Magna Graecia, Viale Europa, Catanzaro, Italy. mflombardo@libero.it
Summary
High-order corneal wavefront aberrations show significant interocular symmetry in myopic eyes. Photorefractive keratectomy (PRK) surgery does not alter this symmetry, maintaining consistent visual quality between eyes post-operation.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- High-order corneal wavefront aberrations (WA) impact visual quality.
- Understanding interocular symmetry is crucial for refractive surgery outcomes.
- Myopic eyes exhibit specific aberration patterns.
Purpose of the Study:
- To analyze the interocular symmetry of high-order corneal wavefront aberrations (WA) in myopic eyes.
- To evaluate the effect of photorefractive keratectomy (PRK) on this symmetry.
- To compare corneal point-spread function (PSF) between eyes pre- and post-PRK.
Main Methods:
- Corneal aberration data (3rd-7th Zernike orders) for 4- and 7-mm pupils were analyzed.
- Data from right and left eyes were averaged after correcting for enantiomorphism.
- Interocular symmetry was tested, and mean corneal point-spread function (PSF) was calculated.
Main Results:
- A moderate to high correlation in high-order corneal WA was found between eyes preoperatively.
- Myopic PRK did not significantly alter the interocular symmetry of corneal aberrations.
- No discernible differences in the orientation PSF between eyes were observed one year post-PRK.
Conclusions:
- Myopic eyes exhibit inherent interocular symmetry in high-order corneal wavefront aberrations.
- Photorefractive keratectomy (PRK) preserves this natural symmetry.
- Surgical outcomes maintain consistent visual performance between the two eyes.