This article is more than 5 years old. Information may no longer be current.
Surgeons should consider coma aberrations prior to multifocal IOL surgery
SAN DIEGO — High coma aberrations are an underestimated factor in patient dissatisfaction after multifocal IOL implantation and should be taken into consideration prior to surgery, a speaker said here.
"We suggest a cutoff of 0.25 µm to reconsider multifocal IOLs," Mohamed G. Aly, MD, FRCS, said at the American Society of Cataract and Refractive Surgery meeting. "Patients with coma aberrations greater than 0.33 µm will suffer intolerable photic symptoms, and IOL exchange is very possible."
Dr. Aly presented findings from a retrospective study on the effect of higher-order corneal aberrations on photic symptoms and patient dissatisfaction after surgery. Forty eyes were implanted with diffractive aspheric multifocal IOLs following uneventful 2.4-mm microincision cataract surgery. All patients had no preoperative corneal astigmatism greater than 0.5 D, abnormal ocular surface and/or dry eye, pre-existing ocular pathology, or limited pupil dynamic range.
MICS did not significantly increase patients' corneal higher-order aberrations, with the exception of trefoil. However, a significant positive correlation was found between the magnitude of coma aberrations and patients' levels of dissatisfaction due to photic symptoms, according to Dr. Aly.
- Disclosure: Mohamed G. Aly, MD, FRCS, has no financial interests in any of the materials included in his presentation.