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Ophthalmology |
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Honan Balloon: Intraocular Pressure Reducer |
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Guide Lines for Using |
| DISPOSABLE |
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This Pneumatic Eye Softener comes to you completely assembled. Check it over carefully for damage in shipping. If any damage is found, notify us and the carrier who should make note of concealed damage.
Relief Valve (Where used)
A highly sensitive precision finished Relief Valve will limit to approximately 60 mmHg the pressure that can be applied by the Honan Intraocular Pressure Reducer.
Preparation for use
Do not autoclave or gas sterilize!
CAUTION: Do not sterilize
the Pressure Gauge or Bulb Air Pump. They could be damaged in the process.
It is clean, ready for use. Remove from pouch and apply.
Positioning the Pressure Reducer
Tape upper lid closed to avoid touching cornea. Place a Sterile Eye pad or 4" x 4" gauze over the eye and position the soft pneumatic Bellows over the pad and the eye, securing it loosely in place with the adjustable Headband.
Apply Headband loosely enough to prevent putting pressure on the eye before inflating Bellows, but tightly enough to apply dessired pressure when inflated.
Before inflating Bellows, read the Guidelines For Using The Pneumatic Eye Softener.
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| REUSABLE |
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This Pneumatic Eye Softener comes to you completely assembled. Check it over carefully for damage in shipping. If any damage is found, notify us and the carrier who should make note of concealed damage.
Relief Valve (Where used)
A highly sensitive precision finished Relief Valve will limit to approximately 60 mmHg the pressure that can be applied by the Honan Intraocular Pressure Reducer.
Preparation for use, Reusable
Clean and disinfect the Headband, Bellows and Tubing, (parts that touch the patient's face) using a recognized germicidal solution. Wipe clean. Do not immerse. Do not autoclave or gas sterilize.
CAUTION: Do not sterilize the Pressure Gauge or Bulb Air Pump. They could be damaged in the process.
Positioning the Pressure Reducer
Tape upper lid closed to avoid touching cornea. Place a Sterile Eye pad or 4" x 4" gauze over the eye and position the soft pneumatic Bellows over the pad and the eye, securing it loosely in place with the adjustable Headband.
Apply Headband loosely enough to prevent putting pressure on the eye before inflating Bellows, but tightly enough to apply dessired pressure when inflated.
Before inflating Bellows, read the Guidelines For Using The Pneumatic Eye Softener.
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| GUIDELINES FOR USING |
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Pressure on the eye traditionally has been a method of slowing some tachycardias.
Some persons may be more sensitive to the ocular-vagal reflex. Therefore, all patients should be monitored for signs of bradycardia while pressure is being applied to the eye.
The optimum pressure to be used should be well below pressure in the central retinal arthery. It should be elevated only high enough to create soft surgical eye. Using the 20 to 30 mm Hg of monitored pressure for 30 to 60 minutes before surgery, clinically results in very soft, safe, surgical eyes. With the Schiotz Tonometer with 5.5 gram weight, the scale reading may be above 10. An eye may be so soft that the cornea may
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Instrument in position |
be observed to dimple when the lid speculum is inserted.
Releasing the pressure every 30 seconds and then reapplying is has NOT been found necessary
or desirable.
With a soft eye, the iris may be concave or drop posteriorly after lens removal. Excess vitreous pressure is typically absent. Intraocular lens implantation is much easier and safer. From the surgeon's viewpoint, there is much less stress and strain. |
| Added Safety in Phaco Emulsification |
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The instrument can be used before and/or after retrobulbar, peribulbar or subtenons anesthesia. Application after injection anesthesia, or pledgets soaked in topical anesthetic solution and positions in cul-de-sacs, can enhance the effect of the anesthesia. Application after injecting anesthesia solutions can help prevent retrobulbar or peribulbar hemorrhages. Softening the eye, by presurgery ocular compression prior to phaco emulsification in small incision, no-suture surgery, can be a safety feature in occasional cases where conversion
to extracapsular or intracapsular surgery is necessary.
Preoperative ocular compression may be a safety measure in preventing choroidal expulsive hemorrhage. Sudden stress occurs on fragile sclerotic vessels when the intraocular pressure is suddenly reduced to atmospheric pressure at the time of incision. Lowering the intraocular pressure by preoperative ocular compression should reduce the pressure differential and the amount of stress on the vessels at time of incision.
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