APPLANATION TONOMETER USER`S MANUAL
Contents
1. APPLANATION TONOMETER USER S MANUAL EQ 6703 AMCON CENTER 1 800 255 6161 Fax 1 800 397 0013 www amconlabs com CONTENTS Disclaimer and General Safety Requirements nnonnnnnnna 1 2 Parts of the Applanation Tonometer noonnnnnnnnnnnnnnan nan Assembly Preparing to Measure Intraocular Pressure ennnennnen ne Equipment Preparation eenenensnnnnnnnnnnennnannnnnnnnnnnnannnnn annan Patient Preparan anida Measuring Intraocular Pressure occonnconncccnncocnconoccnanconnronarenanrnanrnnanenas Reasons for Errors in Measuring Intraocular Pressure Maintenance Specifications AO CO The Eyecare Supply Amcon Applanation Tonometer A A a C ENTER DISCLAIMER Amcon The Eyecare Supply Center makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranties merchantability or fitness for any particular purpose Further Amcon The Eyecare Supply Center reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of this company to notify any person of such revision or changes NOTE Neither Manufacturer nor distributor assumes any responsibility or liability for any damages caused by negligence or ignorance of precautions in this manual2. GENERAL SAFETY REQUIREMENTS Please read the following warnings carefully to avoid injury as well as to not damage the instrument WARNINGS 1 Do not use the instrument under flammable explosive or dusty environments Keep it clean and dry Avoid high temperatures 2 In case of trouble with the instrument first read the manual for troubleshooting to problem If this does not solve the problem contact an authorized ophthalmic equipment service repairperson CO CO The Eyecare Supply Amcon Applanation Tonometer A A a C ENTER 1 PARTS OF THE APPLANATION TONOMETER Area to Attach to Slit Lamp Tonometer Prism Holder Tonometer Prism Reading Adjustment Knobs Measurement Box Extra Prisms 2 ASSEMBLY All parts should be removed from packaging with great care in order to avoid damaging the instrument Insert the tonometer prism holder into the hole on top of the measurement box Place the area to attach to the slit lamp on the bar on top of the accessories mount area above magnification selection dial Insert disinfected tonometer prism into the tonometer prism holder 3 PREPARING TO MEASURE INTRAOCULAR PRESSURE Equipment Preparation Disinfecting the Tonometer Prism Remove prism from holder Rinse prism under running cold water to remove fluorescein and tears Soak tip in 3 AO CO The Eyecare Supply Amcon Applanation Tonometer A A a C ENTER hydrogen peroxide solution for 10 mi
3. mires just overlap with one another Fig 2 Fig 1 Fig 2 Remove the prism from the patient s eye Multiply the number from the reading adjustment knob by ten to get the IOP reading in millimeters of mercury mmHg Repeat on the other eye Amcon Applanation Tonometer The Eyecare Supply AMCON CG NTER 5 REASONS FOR ERRORS IN MEASURING INTRAOCULAR PRESSURE Thick Mires Thin Mires Only half of each mire is in view Mires are not semicircles one mire is higher or lower than the other Mires are not centered horizontally 6 MAINTENANCE Protecting the Instrument Have the patient blink to remove some fluorescein and measure again Also wipe the prism tip with tissue Add more fluorescein and measure again Too much pressure on the cornea Pull back slit lamp and measure again Pull back slit lamp and readjust height so the prism is centered vertically on the cornea Pull back slit lamp and readjust height so the prism is centered horizontally on the cornea This instrument has been calibrated before leaving the factory Do not disassemble the instrument The instrument should be used in a clean environment Protecting the Tonometer Prism Only clean the prism with 3 hydrogen peroxide Do not use alcohol or acetone which can wear down the prism surface over time Do not use UV light to disinfect or sterilize the prism Do no exceed temperatures of 60 C Cleaning Clean the Applana
4. nutes Rinse again thoroughly under running cold water to remove all peroxide Dry with a clean tissue or let air dry Return to holder Aligning Slit Lamp Angle between the illumination arm and microscope should be a 40 to 60 angle Open the slit diaphragm to an 8mm round light spot Switch the filter to cobalt blue so that the yellow green fluorescein can be seen clearly Patient Preparation Instill a topical anesthetic and a fluorescent dye to the patients eyes Suggested pharmaceuticals include a fluorescein benoxinate combination drop or a fluorexon benoxinate combination drop The doctor may instead choose to instill anesthetic drop such as 1 proparacaine and apply a fluorescein strip 4 MEASURING INTRAOCULAR PRESSURE Adjust the prism so that the marks associated with 0 and 180 align with the white marks on the prism holder Position the patient s head against the forehead rest and the chin on the chin rest of the slit lamp Instruct the patient to look forward or past the doctor s shoulder If necessary the doctor can assist in holding the patient s eyelids being careful not to press on the eye Insure that the reading adjustment knob is set on 0 Move the slit lamp and tonometer slowly towards the eye so that the prism tip just touches the center of the cornea Watch through the oculars at the two small semicircle mires Fig 1 Turn the reading adjustment knobs to increase the pressure on the cornea until the two semicircle
5. tion Tonometer only with a water dampened cloth use soap only Do not immerse Tonometer in solution or corrosive agents No direct spraying 7 SPECIFICATIONS Range of Measurement Movement of Light Circle Prism Diameter Prism Range of Movement Weight Size 0 80 mmHg 1 53 x 2 3 06mm 7mm 3mm 300g 190 x 80 x 80 mm
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