Related Experiment Videos
Wavefront analysis of an eye with monocular triplopia and nuclear cataract
Takashi Fujikado1, Teruhito Kuroda, Naoyuki Maeda
1Department of Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan. fujikado@ophthal.med.osaka-u.ac.jp
Purpose:
To determine whether higher-order aberrations explain patient-reported monocular triplopia.
Design:
Observational case report.
Method:
A patient complaining of monocular triplopia was examined with a Hartmann-Shack aberrometer to determine whether higher-order wavefront aberrations could account for the triplopia. The patient had a mild nuclear cataract; measurements were made before and after lensectomy. The retinal image was simulated using the Zernike polynomials.
Result:
Spherical aberration (-0.18 microm, 4 mm pupil) and trefoil aberration (-0.16 microm) were increased. The simulated retinal image had a triple configuration similar to the subjective image reported by the patient. After cataract surgery, the subjective triplopia disappeared; spherical, and trefoil aberrations were markedly decreased.
Conclusion:
The monocular triplopia probably stemmed from combined effects of spherical and trefoil aberrations caused by the nuclear cataract.