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Multifocal corneal topographic changes after radial keratotomy.
1Doheny Eye Institute, Department of Ophthalmology, University of Southern California School of Medicine, Los Angeles.
Ophthalmic Surgery
|February 1, 1992
Summary
Radial keratotomy increased the range of refractive powers in corneas, especially those with a multifocal effect. This suggests refractive surgery could intentionally widen refractive power distribution for multifocal outcomes.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Optics
Background:
- Radial keratotomy is a surgical procedure to correct refractive errors.
- Understanding corneal refractive power distribution is crucial for refractive surgery outcomes.
Purpose of the Study:
- To quantitatively analyze central corneal refractive powers after radial keratotomy.
- To investigate the relationship between refractive power distribution and multifocal effects.
Main Methods:
- Quantitative analysis of central corneal refractive powers in three patients.
- Comparison of pre- and post-operative refractive power ranges.
- Assessment of refractive power distribution in eyes with and without multifocal effects.
Main Results:
- Corneas exhibited a greater range of refractive powers post-radial keratotomy.
- Eyes with a multifocal effect showed a wider distribution of refractive powers compared to those without.
- Radial keratotomy altered corneal refractive power distribution.
Conclusions:
- Radial keratotomy can widen the distribution of central corneal refractive powers.
- Intentional widening of refractive power distribution may achieve a multifocal lens effect.
- Refractive procedure design can potentially control multifocal outcomes.