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Published on: September 20, 2024
A New Methodology for Evaluating the Potential Impact of Residual Refractive Astigmatism in Pseudophakic Patients
Wilson Takashi Hida1,2, Cesar Vilar1,3, Bernardo Kaplan Moscovici4,5
1Department of Ophthalmology, Hospital Oftalmológico de Brasília HOB, Brasilia, DF, Brazil.
Purpose:
To validate a new methodology to evaluate the impact of astigmatism in pseudophakia using an astigmatic defocus curve.
Setting:
Hospital Oftalmológico de Brasilia, Brazil.
Design:
Non-randomized cohort study.
Methods:
For every point of the defocus curve, from -2.00 to +3.00 with 0.50D intervals, visual acuity was assessed with optically induced astigmatism (0.50D, 1.00D and 1.50D at 90 and 180 degrees) in pseudophakic patients implanted with a refractive-enhanced intraocular lens.
Results:
Twelve patients were analyzed. A statistically significant difference was found between the 90° (ATR) and 180°(WTR) axis with 1.50D astigmatism, providing better visual acuity in ATR astigmatism (p < 0.05).
Conclusion:
This new methodology is reproducible, useful and may predict residual astigmatism tolerance in pseudophakic patients, which may help with surgery planning and IOL decision-making.
