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Predictive factor and kappa angle analysis for visual satisfactions in patients with multifocal IOL implantation
G Prakash1, D R Prakash, A Agarwal
1Dr Agarwal's Eye Hospital and Eye Research Centre, Chennai, India.
Eye (London, England)
|June 18, 2011
Summary
This study found that angle kappa, a measure of eye alignment, influences visual discomfort after multifocal intraocular lens (IOL) implantation. Angle kappa and uncorrected visual acuity are key factors affecting patient satisfaction with vision.
Area of Science:
- Ophthalmology
- Biomedical Engineering
Background:
- Refractive multifocal intraocular lenses (IOLs) aim to restore vision at multiple distances.
- Patient satisfaction with multifocal IOLs can be influenced by visual quality and side effects.
- Angle kappa, the misalignment between the visual and pupillary axes, is a potential factor affecting visual outcomes.
Purpose of the Study:
- To assess visual acuity and patient-reported satisfaction after multifocal IOL implantation.
- To identify predictive factors for visual outcomes, including angle kappa.
Main Methods:
- Prospective trial involving 50 eyes of 44 patients undergoing phacoemulsification with multifocal IOL implantation.
- Preoperative and postoperative assessments included visual acuity and angle kappa measurements.
- One-year follow-up included a questionnaire assessing visual symptoms and satisfaction.
Main Results:
- Postoperative uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA) significantly improved compared to preoperative values.
- Symptoms like haloes and glare were reported, with haloes correlating with angle kappa and distance UCVA.
- Patient satisfaction was linked to UCVA, with distance UCVA being the strongest predictor of overall visual discomfort.
Conclusions:
- Angle kappa may play a role in photic phenomena following multifocal IOL implantation.
- Visual acuity, particularly distance UCVA, is a critical predictor of patient satisfaction and visual discomfort.
- Optimizing IOL outcomes may require considering individual patient eye alignment.
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