Ocular IVS2, Product Manual

Page: 29 / 31

27
Landers Four Post Vitrectomy Lens Ring
Designed with Maurice B. Landers, III, M.D., Chapel Hill, NC
Product Code: OLV-1/4P
The Landers Four Post Vitrectomy Ring consists of a stainless steel ring with
an inside diameter of 11.5mm and four posts set at a 30

angle. The posts are
2mm tall and the ring is 3.2mm tall.
The new design permits easier scleral depression in the 9:00 and 3:00 regions. Two posts, with space in
between, allow compensation for slightly misplaced sutures to easily maintain ring centration on the
cornea.
Technique – OLV-1/4P Ring
The Landers Ring is positioned with the cornea geometrically centered within the ring.
Using a 5.0 Mersilene suture, the suture needle is inserted immediately next to the limbus at the 3:00 and
9:00 position using a single armed suture.
The suture is then cut midway between the 3:00 and 9:00 posts.
The suture is then tied around both posts on each side. If the sutures are not placed precisely at the 3:00
and 9:00 positions, the ring may become decentered, compromising the view of the retina.
The first suture is tied loosely holding the ring in place.
If tied too tightly, the ring will tilt upward and
may even flip over.
The second suture is tied tightly in place.
Finally, the first suture is re-tied tightly in place.
If the ring is slightly off center, the knot can be tied over one of the posts rather than both, thus
maintaining the centration.
Cleaning & Disinfection
See Cleaning Method 3.
© 2012 Ocular Instruments
Revised on 2021-06-07 11151B11435