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24 

130° 

OLIV-

WFNA 

101° 

 OLIV-
EQNA 

OWIV-
HMNA 

57° 

Non-Autoclavable Wide Angle Inverted Image Contact Lenses 
 

Description

 

 

Product 
Code 

Image 

Mag 

Diopter 

Static 

FOV 

Dynamic 

FOV 

Lens 

Height 

OLIV-WFNA 

.38x 

155 

130° 

146° 

11.8mm 

OLIV-EQNA 

.65x 

91 

101° 

131° 

14.4mm 

OWIV-HMNA 

.90x 

66 

57° 

100° 

15.1mm 

 

 
 

Landers NA Wide Field Vitrectomy Lens 

 

Designed with Maurice B. Landers, III, M.D., Chapel Hill, NC 

 

 

 

Product Code: OLIV-WFNA 

 

 

The 

Landers NA (non-autoclavable) Wide Field Vitrectomy Lens

 is a single-

piece  lens  designed  for  clinical  situations  where  autoclaving  is  either  not 
available or not required for quick turnaround. 

 

Excellent for panoramic viewing of the far peripheral retina and laser photocoagulation when managing a 
peripheral  retinal  tear  or  giant  retinal  tear.  Its  wide  field  of  view  and  low  magnification  make  it 
particularly  useful  during  fluid-gas  exchanges.  Excellent  lens  for  use  with  media  opacities  such  as 
cataracts and cloudy corneas, and works well through a small pupil. It is the lens of choice for videotaping 
important procedures. 

 
 

Landers NA Equatorial Vitrectomy Lens 

 

Designed with Maurice B. Landers, III, M.D., Chapel Hill, NC 

 

 

 

Product Code: OLIV-EQNA 

 

 

The 

Landers  NA  (non-autoclavable)  Equatorial  Vitrectomy  Lens

  is  a  single-

piece  lens  designed  for  clinical  situations  where  autoclaving  is  either  not 
available  or  not  required  for  quick  turnaround.  It  is  excellent  for  delicate 
membrane peeling around the optic nerve and off of the major vascular  

arcades.  It  also  provides  an  excellent  image  for  delicate  work  around  the  macula  such  as  macular  hole 
surgery or peeling of epiretinal membranes from the macula. 
 

 

Woldoff NA High Magnification Vitrectomy Lens 

 

Designed with Herbert S. Woldoff, M.D., Phoenix, AZ 

 

 

                                                        

Product Code: OWIV-HMNA

 

 

 

The Woldoff NA (non-autoclavable) High Magnification Vitrectomy Lens is 

a single-piece lens designed for clinical situations where autoclaving is either 
not available or not required for quick turnaround. 

 

It is ideal for wide angle viewing of the posterior pole. Its wide field provides stereopsis well beyond the 
area  seen  by  a  conventional  flat  lens.  The  high  magnification  and  resolution  create  very  precise  depth 
perception.  It  provides  an  excellent  image  for  delicate  work  around  the  macula  such  as  macular  hole 
surgery or peeling of epiretinal membranes from the macula. It also is the lens of choice for videotaping 
macular procedures.

 

Summary of Contents for IVS2

Page 1: ...OCULAR INSTRUMENTS IVS2 INVERTER VITRECTOMY SYSTEM PRODUCT MANUAL...

Page 2: ......

Page 3: ...al Tips on using the IVS2 Page 13 Maintenance Removable Accessories Care Cleaning and Disinfection of the IVS2 Sterilization of the Adjustment Knob Page 14 Troubleshooting Page 15 Guarantee Limitation...

Page 4: ...treatment of diseases and disorders of the eye The Inverter Vitrectomy System re inverts the inverted image of our line of Wide Angle Vitrectomy Lenses Proper installation and care of the device is i...

Page 5: ...cally flawless working condition Do not use the IVS2 if it is defective Please contact Ocular Instruments or its distributor if you believe the unit to be defective Do not use the IVS2 in the presence...

Page 6: ...quatorial II Vitrectomy Lens OLIV EQ 2 1 Woldoff High Magnification Vitrectomy Lens OWIV HM OR a combination of the following non autoclavable lenses 1 Landers Non Autoclavable Wide Field Vitrectomy L...

Page 7: ...ce the fundus is observed through a contact lens it is necessary to be able to move back and forth smoothly and quickly between the upright and the inverted image This function is performed by the IVS...

Page 8: ...have the knowledge and experience to ensure proper handling The IVS2 is intended for use with operating microscopes in hospitals clinics outpatient facilities etc where ophthalmic surgery is performe...

Page 9: ...er Adjustment Knob sterilizable Cap for adjustment knob No 3 above No 2 Knurled thumb screw Fastens upper part of microscope to the IVS2 No 5 Protective dust cover No 3 Adjustment knob No 6 Rating pla...

Page 10: ...S2 like the operating microscope should be handled with care and should not be subjected to shocks high temperature moisture or fluids or high temperatures above 40 C Before assembling the IVS2 and mi...

Page 11: ...e locking screw on the main body of the microscope Figure 2 No 1 with the screwdriver provided Remove the binocular eyepiece assembly and the beam splitter from the main body of the microscope On many...

Page 12: ...d other components of the microscope that is carefully tighten the knurled thumb screw of the IVS2 Fig 1 No 2 in the same manner and then confirm that each component is correctly seated Figure 3 Micro...

Page 13: ...11 Illustrations of IVS2 on Various Microscopes Zeiss Microscope...

Page 14: ...12 Leica Wild Microscope...

Page 15: ...13 Topcon Microscope...

Page 16: ...Knob OIVS2 K either clockwise or counterclockwise to its other position Always activate the IVS2 if you are using optical inversion e g with Ocular Instruments steam sterilizable or non autoclavable...

Page 17: ...m autoclavable at 270 F 132 C for the appropriate time period per your sterilizer s instructions Transport of the IVS2 Always position the optical system of the IVS2 in one of the two rest positions O...

Page 18: ...slightly Seeing surgeon s hand movements outside the image of the eye causes nausea The IVS2 inverts all of the images that come into the microscope Since the wide angle lenses invert the image of the...

Page 19: ...se return it to Ocular Instruments in it s carrying case with both protection caps covering the optics Proof of purchase and a copy of the original packing slip are required before services can be pro...

Page 20: ...es or repairs are made by unauthorized persons or if the unit is improperly serviced or handled Service Address Supplementary information is available from our service department or from our authorize...

Page 21: ...Pa Degree of waterproofing IP 64 The IVS2 is adaptable to the following microscopes Zeiss OPMI 1 6 Retrolux 1 3 CS Retroskop 1 2 CS MDI MDO MDU Leica M 650 M500 501 M 690 M620 M690 M 840 M841 M820 M84...

Page 22: ...deotaping important procedures Landers Equatorial II Vitrectomy Lens Designed with Maurice B Landers III M D Chapel Hill NC Product Code OLIV EQ 2 The Landers Equatorial Vitrectomy Lens is excellent f...

Page 23: ...nd then raise the microscope head away from the patient s eye It is suggested that one work at the lowest magnification Most surgeons reduce magnification after they become familiar with the IVS so th...

Page 24: ...through a contact lens With the microscope set at the lowest magnification and the microscope head travel at the lowest position move the microscope to obtain a focus on the cornea Once the lens has...

Page 25: ...ach half of the lens with mild soap and water so that each element is free of mucous sebaceous deposits or other debris Caution If fluid gas exchange has occurred wipe lens with alcohol to remove any...

Page 26: ...Maurice B Landers III M D Chapel Hill NC Product Code OLIV EQNA The Landers NA non autoclavable Equatorial Vitrectomy Lens is a single piece lens designed for clinical situations where autoclaving is...

Page 27: ...reduce magnification after they become familiar with the IVS so they may achieve more field of view Be sure the lens is seated well on the cornea If the assistant has a poor image and you find the im...

Page 28: ...cation and the microscope head travel at the lowest position move the microscope to obtain a focus on the cornea Once the lens has been placed on the eye focus the microscope using the focusing adjust...

Page 29: ...rsilene 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...

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