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Impressum
Outcomes after pars plana vitrectomy for dislocated lens fragments into the vitreous during phacoemulsification
Lazar M., Koop G., Walter O., Pavlovic S.
Zentrum für Augenheilkunde Giessen, Friedrichstraße 18, 35390 Gießen
Purpose: The dislocation of lens fragments into the vitreous during
phacoemulsification is an infrequent, but serious surgical complication.
The aim of this study is to evaluate outcomes after pars plana vitrectomy
for removal of dislocated lens fragments from the vitreous.
Methods: A retrospective study was conducted to evaluate 19 eyes
of 19 patients requiring pars plana vitrectomy for dislocated lens fragments
into the vitreous during phacoemulsification between 1993 and 2001. The
following parameters were recorded pre- and postoperatively for all patients:
visual acuity, intraocular pressure, significant intraocular inflammation,
as well as corneal and posterior segment complications. The interval between
phacoemulsification and pars plana vitrectomy was also noted.
Results: In 13 of 19 patients phacoemulsifikation had been performed
in our department. The other 6 patients were operated in other clinic.
The incidence of posteriorly dislocated lens fragments during phakoemulsifikation
in our department was 0,1%. Pars plana vitrectomy was performed in 9 eyes
immediately following phacoemulsification, in 7 eyes within 1 week after
phacoemulsification and in 3 eyes more than 1 week after phacoemulsification.
Among the eyes with delayed pars plana vitrectomy 7 eyes had increased
intraocular pressure, 9 uveitis and 10 corneal edema. All these complications
developed within the time interval between the phacoemulsification and
pars plana vitrectomy. Retinal detachment did not occur in any of the
eyes. The mean follow-up time was 3 ½ years. No serious complications
occurred after pars plana vitrectomy. Compared to visual acuity before
cataract surgery the final visual acuity increased from 0.25 to 0.5.
Conclusions: Pars plana vitrectomy for removal of posteriorly dislocated
lens fragments was in our series not associated with significant complications.
The interval between phacoemulsification and pars plana virectomy did
not influence the final visual outcome significantly.