eye through 8 points of fixation that
can be positioned (and removed) by
any push-pull type manipulator. The
device can create up to 8 mm of dila-
tion through an incision as small as
1.8 mm, so the goal is to give sur-
geons extra room to maneuver while
improving access to the anterior seg-
ment and posterior chamber. The
company offers both single-use and
reusable versions, the latter of which
is validated for up to 5 uses. The sin-
gle-use models list for $100 each, and
a kit that includes 4 multi-use rings lists for $1,500. The multi-use rings
alone are priced at $50 per use.
Proponents point to its utility in letting surgeons pre-operatively per-
form femtosecond capsulorhexis and lens fragmentation in patients
with small pupils, something that's especially helpful for patients who
want a premium IOL but who have poor dilation.
• Assia Pupil Expander (APX
Ophthalmology). This dispos-
able device, sometimes called
just APX, uses 2 small spring-
loaded devices that are inserted
through 1.1-mm incisions. The
surgeon positions the scissor-
like configurations, which create
a rectangular opening that's
about 6 mm x 6 mm. No intraoc-
ular manipulation is needed. A
1 1 0 • O U T PA T I E N T S U R G E R Y M A G A Z I N E • A P R I L 2 0 1 7
• The Diamatrix XpandNT Iris Expansion System
can create up to 8 mm of dilation through an incision as
small as 1.8 mm.
• APX Ophthalmology's Assia Pupil Expander uses 2 small
spring-loaded devices, making it easy to insert and remove.
