Pupil diameter changes and reaction after posterior chamber phakic intraocular lens implantation.
OBJECTIVE
To compare the different aspects of pupil constriction before and after the implantation of an implantable contact lens (ICL).


METHODS
Augenabteilung der Schlosspark-Klinik Berlin, Berlin, Germany.


METHODS
This study comprised 15 myopic and 9 hyperopic eyes that were evaluated before and after the implantation of an ICL using a compact integrated pupillograph (CIP, AMTech) under standardized conditions. The preoperative and postoperative pupil diameters, rate and latency of the pupil reaction, and amplitude of constriction were compared.


RESULTS
The latency and the duration of pupil constriction were significantly prolonged after ICL implantation. The rate of pupil contraction and redilation, the pupil diameter, and the amplitude of pupil constriction were reduced after ICL implantation.


CONCLUSIONS
The pupil reaction after implantation of a phakic posterior chamber ICL was slower. The postoperative pupil diameter was smaller, and the amplitude of constriction was reduced. The changes have not proved to be clinically significant to date.
Keuch
Richard J
RJ
Augenabteilung der Schlosspark-Klinik Berlin, Heubnerweg 2, 14059 Berlin, Germany. richard.keuch@schlosspark-klinik.de
Bleckmann
Heinrich
H
D005260:Female; D006801:Humans; D006956:Hyperopia / Q000601:surgery*; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011680:Pupil / Q000502:physiology*; D012025:Reflex, Pupillary / Q000502:physiology*; D014792:Visual Acuity