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What Is a Wavefront Aberrometer?
A wavefront aberrometer measures how light travels through the eye and identifies optical deviations from an ideal wavefront. The resulting data can help describe lower- and higher-order aberrations that may affect visual quality.
At Eye Freedom, aberrometry is one part of a comprehensive evaluation. It does not diagnose every cause of blur, glare, halos, ghosting, or poor night vision, and a measurement by itself does not establish candidacy for a particular scleral lens.
Lower-Order and Higher-Order Aberrations
Lower-order aberrations include defocus and regular astigmatism, which ordinary glasses and contact lens prescriptions commonly address. Higher-order aberrations include more complex patterns such as coma, trefoil, and spherical aberration.
Higher-order aberrations can reduce contrast or contribute to glare, halos, streaking, starbursts, or monocular ghost images. The same symptoms may also result from tear-film instability, lens deposits, cataract, retinal disease, or other conditions, so the measurement must be interpreted with the eye examination.
What Happens During Wavefront Aberrometry?
The instrument sends a controlled light signal into the eye and analyzes the returning wavefront. The test is noncontact, but reliable results depend on fixation, pupil conditions, blinking, tear-film quality, and the instrument’s ability to capture repeatable measurements.
For scleral lens assessment, measurements may be taken through a settled lens so Dr. Boshnick can evaluate the combined optical system of the eye, fluid reservoir, and lens. Repeated readings help determine whether the pattern is stable enough to use in planning.
How Aberrometry Supports Custom Scleral Lens Care
Wavefront data may help Dr. Boshnick:
- separate ordinary prescription error from selected residual higher-order aberrations;
- compare unaided, corrected, and scleral-lens optical quality;
- evaluate whether a stable lens platform may support customized optics;
- explain why high-contrast acuity and real-world visual quality may differ; and
- monitor whether a design change affects measured optical performance.
Aberrometry complements refraction, corneal imaging, lens fit assessment, ocular surface examination, and the patient’s description of symptoms. For broader context on candidacy, fitting, care, and limitations, read the Eye Freedom scleral lens guide.
Measurement Limits and Next Steps
A wavefront map is not a treatment recommendation and does not guarantee that customized optics will improve a particular symptom. If the tear film is unstable or the scleral lens moves, rotates, flexes, or decenters, the measurement and any planned correction may change.
Learn how measurements may be used for wavefront-guided scleral lenses and with the WaveDyn Vision Analyzer.
Medical sources
- Wavefront-guided scleral lens correction in keratoconus
- Wavefront-guided scleral lenses for irregular corneal astigmatism
- Clinical study of wavefront-guided scleral lenses
Testing must be interpreted by a qualified eye-care professional and does not replace a complete examination.
Frequently Asked Questions
It measures optical deviations as light travels through the eye, including lower-order prescription errors and selected higher-order aberrations such as coma, trefoil, and spherical aberration.
No. Corneal topography maps corneal surface curvature. Wavefront aberrometry evaluates the optical performance of the eye as a system. The tests provide different, complementary information.
The measurement is generally noncontact. Patients look into the instrument and follow fixation instructions while one or more readings are captured.
No. The result must be repeatable, relevant to the symptoms, and considered with ocular health, refraction, tear film, lens fit, and other findings.
No. Similar symptoms can arise from the tear film, lens deposits, cataract, retinal disease, medication effects, or other causes that require clinical evaluation.
Schedule Your Consultation with
Dr. Boshnick
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7800 Sw 87 Ave Suite B-270
Miami, Florida 33173
