A new non-trocar system for 25-gauge transconjunctival pars plana vitrectomy.
OBJECTIVE
To introduce a new non-trocar system for 25-gauge transconjunctival pars plana vitrectomy (PPV).


METHODS
Study of a new surgical instrument.


METHODS
This new non-trocar system for 25-gauge transconjunctival PPV consists of a contact lens ring featuring four projections containing 1.0-mm diameter holes located 3.0 mm from the ring edge, a wedge-shaped 25-gauge infusion cannula, and two plugs.


RESULTS
The ring is fixed with 7-0 silk sutures at the 3- and 9-o'clock positions on the limbus. Using the 25-gauge needle, three conjunctival and scleral incisions (n = 3) are made at the projection holes located inferotemporally, superonasally, and superotemporally. No intra- or postoperative complications were encountered in 14 patients treated by this non-trocar 25-gauge transconjunctival PPV.


CONCLUSIONS
Using the system introduced here, 25-gauge transconjunctival PPV can be performed without suturing sclerotomies and without intra- or postoperative complications.
Tei
Mamoru
M
Department of Ophthalmology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyou-ku, Kyoto 602-0841, Japan. mtei@ophth.kpu-m.ac.jp
Shimamoto
Takasumi
T
Yasuhara
Toru
T
Komori
Hideki
H
Oda
Hideo
H
Kinoshita
Shigeru
S
D003228:Conjunctiva / Q000601:surgery; D006801:Humans; D009339:Needles; D012599:Sclerostomy; D013525:Surgical Instruments; D014821:Vitrectomy / Q000295:instrumentation*