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Page 2: ...al parts of the Instrument are manufactured and assembled to meet customer s requirements High cared design of positioning rotating moving and clamping assemblies is confirmed to meet the actual requirements efficiently DESCRIPTION OF KERATOMETER A keratometer is a medical instrument that eye care professionals use to measure the curvature and reflection of the anterior surface of the cornea 2 ...
Page 3: ...tion 11 10 Unpacking and Installation 12 11 List of Parts 13 12 Preliminary Adjustments 14 13 Operating the Patient for Examination 15 14 Instrument Orientation 15 15 Patient Fixation Way to focus the Instrument 16 16 Locating the Cylinder Axis 18 17 Measuring the Horizontal Principal Meridian 19 18 Measuring the Vertical Principal Meridian 19 19 Corneal Astigmatism Axis of Astigmatism 20 20 With ...
Page 4: ...e declared Intended for use with safer and reliable Electrical installation of the room or building in which the equipment is to be used must comply with regulations specified by the country in which the equipment to be used as well the specified in the specification The repair service will be taken care by a qualified technical person of Appasamy Associates Read and follow the instructions cautio...
Page 5: ... the equipment Remove the plug of Equipment from wall outlet before changing the Fuse Check the electrical connections periodically any defects noticed like loose connections damaged to insulation in the electrical wires etc should be rectified immediately Always place silica gel that packed in a packet near to optics e g Eyepiece and lens base It reduces the moisture contamination and fungus of o...
Page 6: ...to clean the optics and parts Only use soft dry cloth to clean the device When using the instrument after a prolonged period of inactivity confirm normal and safe operation beforehand Unplug the Equipment and refer servicing to qualified service personnel under the following condition If the product isn t able to use after done all the troubleshooting in this manual If the liquid has been spilled ...
Page 7: ... changing the bulb In the event of user error it is possible to injury WARNING In the event of user error death or serious injury is Possible This icon denote cautions This icon represents the productive earth This icon represents Alternating current This icon represents the power switch is turned OFF This icon represents the power switch is turned ON Type B applied part LABELING INFORMATION SN Nu...
Page 8: ...x Degree of mobility Portable Type of protection against Electrical shocks Class 1 Degree of protection against Electrical shocks Type B Power Requirements AC Input I P 110V AC 220V AC 60Hz 50Hz 25VA O P 6V DC 2A Fuses 1A Slow Blow 110V AC 500mA Slow Blow 230V AC 3A Slow Blow IP Category 2X Safety Rules Leakage current to ground less than 0 5mA in normal condition Leakage current to ground less th...
Page 9: ...re that the following conditions are met a The instrument should not be splashed with water b Store the instrument where air pressure temperature humidity ventilation sunlight dust salty sulfurous air etc do not give any negative side effect c Do not store or transport the instrument on a slope or uneven surface or in an area where it is subject to vibrations or instability d Do not store the inst...
Page 10: ...raved focusing scale on eyepiece Dual eye level sighting system Facilitates horizontal alignment Clear uniform illuminated mires Accurate of 0 012D from 36D to 52D Measuring range Radius of curvature 9 4 6 4 mm In 0 05 mm steps Diopter 36 52 in 0 25 steps Instrument Dimensions Height 16 Width 7 Length 19 Weight of the Instrument 7 0 Kgs approximately Colour Finish Black Mode of operation Continuou...
Page 11: ...pread sufficiently to clean the whole surface Remove any obstinate marks by repeating the process A new and clean piece of tissue should be used each time Caution Avoid cleaning lens with abrasive or lint cloths Never dry wipe a lens as this may cause scratching Begin by blowing off dust or loose material with pressurized optical duster or bellows ball Flooding or placing solvents directly on the ...
Page 12: ...Equipment except Appasamy Associates Engineers Connect the Output of the power supply to the Keratometer Ensure the intensity control in minimum position Connect it to supply mains Do not position the medical equipment to make it difficult to operate the disconnection devices appliance coupler Don t close the equipment immediately with any cover wait until it cools and cover with proper dust cover...
Page 13: ...13 PRELIMINARY ADJUSTMENTS ...
Page 14: ...ss This tends to stimulate accommodation and may result in erroneous readings 5 When the cross is at its sharpest focus note the reading on the outer periphery of the eye cap 6 Repeat steps 3 4 and 5 several times if the results are approximately the same each time the eyepiece is adjusted for your eye The calibrated scale on the outer periphery of the eye cap is for the operator s convenience Onc...
Page 15: ... means of Elevation Knob until the leveling sight pin on the side of the lamp house and the white axis marker are aligned with the patient s pupil or with his outlet canthus For grater accuracy in axis specification turn the instrument in the direction of the other eye and make the same adjustment If the patient s head is not held in the proper vertical position it will not be possible to line up ...
Page 16: ...t should be instructed to watch this target Way to focus the Instrument The Instrument is focus horizontal vertical meridians are coincided by rotating horizontal and vertical knobs The Instrument is focus To coincide the mires it is to be titled correctly at cylinder axis The Instrument is focus and horizontal meridian is coincided by rotating horizontal knob and vertical meridian is to be coinci...
Page 17: ...nt s eye These conditions constitute the triple alignment In the Appasamy keratometer the focusing does not depend alone upon the apparent sharpness of the target image but is accomplished more precisely by coincidence of overlapped focusing circle appearing single When the instrument is out of focus the central focusing circle and the plus and minus signs are doubled But when the exact focus is l...
Page 18: ...es of the plus signs will appear continuous and unbroken A further check on the accurate location of the axis may be obtained by throwing the instrument slightly out of focus Then the plus sign of the central of using circle will be doubled If the axis is correct the horizontal line in the plus sign of the left circle will be exactly midway between the double horizontal lines of the other plus sig...
Page 19: ...e the short minus sign and the split minus sing by turning the right hand measuring drum The scale on the right hand drum then indicates the actual dioptric power of the cornea curvature in the vertical or neat vertical meridian Remember that if the cornea is astigmatic it is impossible to get both principal meridians in focus at one time Note While measuring with either drum the other hand should...
Page 20: ...he vertical drum If the astigmatism is to be corrected in a minus cylinder from take for its axis the mark representing the drum having the lower dioptric reading If the astigmatism is to be corrected in a plus cylinder from use the axis mark representing the drum having the higher dioptric reading The keratometer axis will usually corroborate that found with the Retinoscope With and Against the R...
Page 21: ...21 TROUBLE SHOOTING This section lists the most common problems that users sometimes encounter All ...
Page 22: ...age Dust or fungus in optics Clean the dust or fungus appropriate cleaning solution Advisory Notice No Modifications are allowed in the device The identified residual risks are mentioned in warnings and safety instructions The destruction of the instrument is according to local disposal and recycling laws The returned goods will only be accepted in exchange for other products not credit The return...
Page 23: ... Conditions 1 The failure of electrical and components like Bulb and Shift Switch etc are not covered by this warranty 2 Warranty becomes void in the following cases a If the equipments is modified and or serviced by persons not authorized by Appasamy Associates Chennai b If the equipments is handled used by persons other than qualified ophthalmologist or technicians c In case damages occurred due...
Page 24: ...recycling laws Manufacturer Marketed by No 11 A Valluvar Nedumpathai Rani Anna Nagar Arumbakkam Chennai 600 106 INDIA Tell 91 44 3298 0153 3298 0154 3298 0155 3297 8584 Toll Free 18004251945 Fax 91 44 2363 0721 2363 1208 Email info appasamy com Website www appasamy com Caution Federal law restricts this device to sale by or on the order of a Physician or Practitioner RD 7 2 3 05KM 02 EC REP M s Em...
