Purpose: To assess the degree of pseudoaccommodation amplitude correlated w
ith shifts along the anteroposterior axis oi the BioComFold foldable intrao
cular lens (IOL).
Setting: Department of Ophthalmology, Hotel-Dieu Hospital, Paris, France.
Methods: This prospective study comprised 30 eyes of 30 patients operated o
n consecutively for cataract by phacoemulsification and in-the-bag implanta
tion of a BioComFold (15 patients) or a foldable control (15 patients) IOL.
The BioComFold IOL has a peripheral bulging ring that pushes the optic for
ward during the effort to accommodate, creating a zoom effect. Pseudoaccomm
odation amplitude was evaluated using the blurring of controlled vision by
adding spheres, with the best correction for distance vision in place. Pupi
l diameter was measured with a Goldmann campimeter under constant illuminat
ion. Anterior chamber depth was determined by A-scan (Paxial, Biophysic Med
ical) 30 minutes after cyclopentolate 1% was instilled and again 30 minutes
after pilocarpine 2% was instilled.
Results: The difference in pseudoaccommodation amplitude and pupil diameter
between the 2 groups was not statistically significant (P = .6737 and P =
.4014, respectively). The IOL's forward shifts from maximal ciliary relaxat
ion to maximal ciliary contraction were significantly greater in the BioCom
Fold group (P = .0215).
Conclusion: The design of the BioComFold IOL allowed greater forward optic
shifts along the anteroposterior axis during the effort to accommodate. Nev
ertheless, this shift was not correlated with a significantly greater pseud
oaccommodation amplitude.