Wide-angle viewing lens for vitrectomy.
OBJECTIVE
To report a new wide-angle viewing contact lens for vitrectomy.


METHODS
New surgical instrument.


METHODS
The new wide-angle viewing lens is made of glass and polymethyl methacrylate without a plastic rim. The diameter is reduced to 16.2 mm. In addition to a smaller diameter than the currently available lens, the new lens is partially cut to reduce the lens diameter.


RESULTS
A smaller diameter makes it possible to eliminate contact between surgical instruments and the wide-angle lens. Instruments can be inserted through sclerotomies without removing the wide-angle lens. The optical properties are otherwise identical to the standard wide-angle lens.


CONCLUSIONS
The new wide-angle viewing lens may be easier to use in vitreous surgery.
Nakata
Ko
K
Department of Ophthalmology, Osaka University Medical School, Suita, Japan. nakatak@ccf.org
Ohji
Masahito
M
Ikuno
Yasushi
Y
Kusaka
Shunji
S
Gomi
Fumi
F
Kamei
Motohiro
M
Ross
Denwood F
DF
Tano
Yasuo
Y
D003261:Contact Lenses; D005898:Glass; D006801:Humans; D055095:Optics and Photonics / Q000295:instrumentation; D019904:Polymethyl Methacrylate; D014821:Vitrectomy / Q000295:instrumentation*
D019904:Polymethyl Methacrylate