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Relationship between apparent accomodation and corneal multifocality in pseudophakic eyes
M Fukuyama1, T Oshika, S Amano
1Fukuyama Eye Clinic, Omuta, Fukuoka, Japan.
Ophthalmology
|June 12, 1999
Summary
Multifocal corneal effects and larger pupillary diameter are linked to apparent accommodation in pseudophakic eyes after cataract surgery. These corneal multifocal properties significantly influence visual perception in patients with intraocular lenses.
Area of Science:
- Ophthalmology
- Optics
- Corneal Physiology
Background:
- Pseudophakic eyes, those with intraocular lenses after cataract surgery, can exhibit apparent accommodation.
- The underlying mechanisms contributing to this phenomenon require further investigation.
Purpose of the Study:
- To determine if multifocal corneal effects are associated with apparent accommodation in pseudophakic eyes.
- To explore the relationship between corneal multifocality and other ocular parameters with apparent accommodation.
Main Methods:
- A prospective observational case series included 121 eyes of 98 patients post-phacoemulsification with intraocular lens implantation.
- Apparent accommodation was measured using an accommodometer.
- Corneal multifocality was assessed via corneal topography, analyzing refractive powers within the pupillary area. Pupillary diameter, astigmatism, and age were also evaluated.
Main Results:
- Multiple regression analysis indicated that corneal multifocality and pupillary diameter showed significant positive correlations with apparent accommodation.
- No significant relationship was found between apparent accommodation and refractive astigmatism, keratometric astigmatism, or age.
Conclusions:
- Multifocal corneal effects are a contributing factor to apparent accommodation in pseudophakic eyes.
- Pupillary diameter also plays a role in the observed apparent accommodation in these patients.