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53 

 

5.5.3 Cross fixation vision test (heterophoria) 

Test purpose: to test heterophoria 

Test sighting mark: cross fixation sighting mark 

Assistant lens: Binocular rotatory prime 

Right eye red optical filter, left eye green optical filter (red and green cross fixation sighting mark) 

Binocular circular polarized optical filter (polarized cross fixation sighting mark) 

1. Call in cross fixation sighting mark. 

2.Ask the patient about the sighting mark he sees and test according his answers. 

Sighting 

mark shape 

Diagnosis Correction 

 

No heterophoria 

Align eye position, no need for correction. 

 

Esophoria 

Increase BO prismatic power until it turns into a cross 

 

Exophoria 

Increase BI prismatic power until it turns into a cross 

 

Left eye 

hyperphoria  

Increase BU prismatic power in right eye and BD 

prismatic power in left eye until it turns into a cross 

 

Right eye 

hyperphoria 

Increase BU prismatic power in left eye and BD 

prismatic power in right eye until it turns into a cross 

 

Eso right 

eye hyperphoria 

Correct the horizontal heterophoria according to 

esophoria method and correct the vertical heterophoria 

according to right eye heperphpria until it turns into a 

cross. 

 

Eso left 

eye hypophoria 

Correct the horizontal heterophoria according to 

esophoria method and correct the vertical heterophoria 

according to left eye heperphpria until it turns into a 

cross. 

 

Exo right 

eye hyperphoria 

Correct the horizontal heterophoria according to 

exophoria method and correct the vertical heterophoria 

Содержание YPA-2100

Страница 1: ...YPA 2100 DIGITAL REFRACTOR User Manual Version 1 0 Date 20180521...

Страница 2: ...ople with high quality complete function and more personalized devices Information in promotional materials and packing boxes is subject to changes due to performance improvement without additional no...

Страница 3: ...evice onto the compound table 8 4 2 2 Install short distance visual chart 8 4 2 3 Install short distance vision rod 9 4 2 4 Horizontal adjustment after installation 9 4 2 5 Install printing paper 10 4...

Страница 4: ...ck test rotatory heterophoria 58 5 5 10 Worth 4 dot test 59 5 5 11 Stereopsis 60 5 5 12 Divergence test 61 5 5 13 Congregation test 62 5 5 14 Near point congregation NPC test 63 5 5 15 Near point adju...

Страница 5: ...13 Electrical Schematic Diagram 82 14 Electromagnetic Compatibility 83...

Страница 6: ...cylinder fixed crisscross cylinder 0 50D one at left one at right the axle is fixed at 90 c Pinhole plate hole diameter 1mm one at left one at right d ross plate used when setting pupil distance one a...

Страница 7: ...3 9kg 2 Printing base about 0 6kg The design and specifications are subject to changes due to technical updates without additional notice 2 Safety Precautions Please read the following matters needing...

Страница 8: ...ng it Do not dismantle or touch the interior parts of the device otherwise it may cause electric shock or device failure The device has passed electromagnetic compatibility test which is in accordance...

Страница 9: ...a Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienc...

Страница 10: ...it level 5 Cornea observation window 6 Testing window 8 Short distance visual chart 7 Short distance vision rod 3 Forehead baseplate knob 2 Forehead baseplate indicator Forehead 1 Horizontal adjusting...

Страница 11: ...w through which to observe and confirm the distance of the tester s corneal vertex 6 Testing window Light aperture for testing 7 Short distance vision rod Install and support the short distance visual...

Страница 12: ...switch Turn on power switch power indicator is lit up 2 Printing bin Install printing papers 3 LAN Port Connect to LAN preserved port 4 R232 serial port Connect to lens meter LM computer vision teste...

Страница 13: ...Printing paper 2Rolls Power Cord 1Pcs DC power cord 1Pcs Hex wrench 2 0mm 1Pcs Hex wrench 2 5mm 1Pcs Hex wrench 3mm 1Pcs Stainless steel flat head set screw M6 8 2Pcs 4 2 Installation Instructions 4 2...

Страница 14: ...he vision rod at the knob and keep the end of the vision rod close to the end of the installation hole in the vision tester host 4 2 4 Horizontal adjustment after installation Rotate the horizontal ad...

Страница 15: ...ith the nameplate serial number 4 WPA PSK WPA2 PSK PSK password yeasn2002 5 After the setting is completed click the Reboot Router button on the setting interface 4 2 7 Install APP 1 Please contact th...

Страница 16: ...configured with the device 2 Start up the host first press the power switch on the printing base the power indicator is on 3 After the host is initialized start up the compound laptop and open the op...

Страница 17: ...the dominant eye 5 Measurement mode LD Long distance mode SD short distance mode Press LD or SD to shift between long distance mode and short distance mode 6 PD Press this key to display left pupil d...

Страница 18: ...indrical power of left eye 12 A Cylindrical axis input window Press A input window aside R to input the cylindrical axis of right eye press A input window aside L to input the cylindrical axis of left...

Страница 19: ...mode key Press this key to shift prismatic power between polar coordinate model and X Y rectangular coordinate model 22 Quick Set Click this key to quickly set spherical lens step cylinder axis step a...

Страница 20: ...ly after powering on If icons disappear the peripheral devices are not well connected 29 System Setting Click this key to set system 30 Right auxiliary lenses Click this key to popup the choice box re...

Страница 21: ...s Assistant lens key to display assistant lens interface 2 Press corresponding keys in the interface to The selected assistant lens will be called in the testing window and return to testing interface...

Страница 22: ...w Baffle plate shelter testing window Pinhole plate hole diameter 1mm Right eye red optical filter left eye green optical filter Right eye 45 linear polarized optical filter left eye 135 linear polari...

Страница 23: ...ress to change angle Binocular equilibrium prism press to change prismatic power Horizontal heterophoria prism press to change prismatic power Vertical heterophoria prism press to change prismatic pow...

Страница 24: ...19 Press to enlarge PD press to reduce PD 3 Press to exit PD input interface...

Страница 25: ...big spherical power 1D or above is 1D Slit step 1 5 Factory default 5 Set step size for single slit axis selectable between 1 and 5 Display X Y and r Factory default r Selectable between rectangular...

Страница 26: ...etting short distance vision test Set it On the short distance indicator is automatically on during ADD testing mode and short distance vision test Except grid the short distance indicator is automati...

Страница 27: ...lt off Set if delete measuring data after printing Clear data on off factory default off Set if prompt Confirm delete message when pressing delete Set it Yes to avoid mistaken deletion of data when th...

Страница 28: ...data the vision tester automatically selects input data to carry out subjective optometry When inputting two sets of AR or LM data the vision tester automatically selects input data AR the vision test...

Страница 29: ...ing lens in the testing window 5 Keep the patient s forehead on the baseplate the indicator is off 6 The tester can observe the testee s eyes through testing window to make sure his eyes are in the ce...

Страница 30: ...25 5 4 Standard Optometry Procedure Press Program Reg to start up standard optometry procedure 1 Press to input AR computer refractor measurement data...

Страница 31: ...26 key...

Страница 32: ...ffled test uncased right eye vision Call in visual chart to test the best right eye vision Input the tested right eye vision 2 Left eye test R testing window is baffled test uncased left eye vision Ca...

Страница 33: ...28 Call in visual chart to test the best binocular vision Input the tested binocular vision 3 Press to select if input degree with glasses Select No to skip to step 6 select Yes to skip to step 4...

Страница 34: ...29 4 Press to input degree with glasses Use LM to measure the degree of the glasses the patient wears and input measurement data...

Страница 35: ...30 5 Press to test the patient s vision with glasses Test the patient s vision with glasses according to step 2 the method to test the uncased eye vision of the patient...

Страница 36: ...ctive correction Right eye scieropia Baffle the left eye change the cylindrical power of right eye to 0 Put on 0 5 sighting mark and then gradually increase the positive spherical power until the 0 5...

Страница 37: ...y distinct If the answers are The definitions of all lines look the same No astigmatism turn to step 9 One line looks especially distinct Multiply the smaller figure 1 6 corresponding to the especiall...

Страница 38: ...ly adjust the cylindrical power until the definitions of lines to all directions in the astigmatism disc are the same 9 Press message prompts skip crisscross cylinder test When the cylindrical power i...

Страница 39: ...34 10 Press and call in 0 8 sighting mark take 0 25D sphere as increment to gradually adjust the spherical power until the patient sees the sighting mark clearly...

Страница 40: ...which side looks more distinct If the letter in the red side looks more distinct press to increase 0 25D spherical power If the letter in the green side looks more distinct press to decrease 0 25D sph...

Страница 41: ...sighting mark and 0 25D crisscross cylinder 2 Reverse side 1 and side 2 of the crisscross cylinder ask the patient which side is more distinct When the side 1 is more distinct enlarge the axis When th...

Страница 42: ...37 4 Click key shift to 0 5XC 5 Click the key again shift to automatic mode Slit Prism...

Страница 43: ...ye 1 Reverse side 1 and side 2 of the crisscross cylinder ask the patient which side is more distinct When the side 1 is more distinct enlarge the astigmatic power When the side 2 is more distinct red...

Страница 44: ...which side looks more distinct If the letter in the red side looks more distinct press to increase 0 25D spherical power If the letter in the green side looks more distinct press to decrease 0 25D sph...

Страница 45: ...g mark Adjust spherical power and ask the patient to keep eyes on the sighting mark Ask the patient when the sighting mark looks more distinct Take the lowest spherical power when the 1 0 sighting mar...

Страница 46: ...41 16 25 Press to test the best vision of the left eye according to above step 6 15 So far the SUBJ test for the left eye is finished...

Страница 47: ...s on the sighting mark and compare the definitions of upper and lower sighting marks If the upper sighting mark is more distinct than the lower sighting mark press to reduce 0 25D spherical power for...

Страница 48: ...spherical powers of two eyes by 1 00D synchronically remove the prism in the binocular testing window call in 1 0 sighting mark enlarge the spherical powers of two eyes by 0 25D synchronically until...

Страница 49: ...4 dots test 1 Call in red optical filter in R testing window and green optical filter in L testing window and Worth 4 dots sighting mark 2 Confirm which points the patient can see clearly 3 Input the...

Страница 50: ...1 Call in red optical filter in R testing window and green optical filter in L testing window and stereo sighting mark 2 Confirm if the patient can see four straight lines with stereo clearly 3 Input...

Страница 51: ...46 30 Press message near vision test prompts Select Yes skip to step 31 Select No skip to step 34 the test is finished...

Страница 52: ...47 31 Input patient age 1 Call 0 50D fixed crisscross prism in the binocular testing window 2 Input the patient s age Shift long distance degree to correction degree...

Страница 53: ...the horizontal line or the vertical line which is more distinct Or the horizontal line and the vertical line look the same If the horizontal line and the vertical line look the same there is no need...

Страница 54: ...ess to carry out near vision test 1 Remove 0 50D fixed crisscross cylinder 2 Select short distance visual chart to test the vision 3 Make the patient see the sighting mark clearly to reach ideal visio...

Страница 55: ...50 34 Press to finish the test...

Страница 56: ...ne and the vertical line look the same there is no need to carry out near vision test and wear presbyopia glasses If the horizontal line is more distinct than the vertical line increase two eyes by 0...

Страница 57: ...ect the vertical heterophoria according to right eye heperphpria until it turns into a cross Esophoria left eye hypophoria Correct the horizontal heterophoria according to esophoria method and correct...

Страница 58: ...phoria Increase BI prismatic power until it turns into a cross Left eye hyperphoria Increase BU prismatic power in right eye and BD prismatic power in left eye until it turns into a cross Right eye hy...

Страница 59: ...ross ring sighting mark Binocular circular polarized optical filter polarized cross ring sighting mark 1 Call in cross ring sighting mark 2 Ask the patient about the sighting mark he sees and test acc...

Страница 60: ...test according his answers 2 1 Horizontal image inequality If the sizes of the upper and lower frames are equivalent there is no horizontal image inequality if the sizes of the upper and lower frames...

Страница 61: ...ames are not equivalent there is vertical image inequality As shown in right figure about 3 5 image inequality The straight line width of the sighting mark amounts to 3 5 image inequality 2 2 Vertical...

Страница 62: ...addox rod test horizontal heterphoria Test purpose to test horizontal heterophoria Test sighting mark Maddox rod sighting mark Assistant lens right eye horizontal Maddox rod left eye rotatory prism 1...

Страница 63: ...clock sighting mark 1 Call in clock sighting mark 2 Ask the patient about the sighting mark he sees and test according his answers Sighting mark shape Diagnosis Correction No rotatory heterophoria Ali...

Страница 64: ...Dot number Sighting mark shape Description Diagnosis 4 Red squares and round dots green crosses Two eyes have fusion function Right eye is dominant eye 4 Red squares green crosses and round dots Two e...

Страница 65: ...ntral round point are at the same plane and four short lines protrude outwards the distances from the short line aside figure 12 3 6 and 9 to the eye are seemly shortened and the short line aside figu...

Страница 66: ...capability Test sighting mark the column sighting marks in the visual chart Assistant lens binocular rotatory prism Make sure the Congregation and divergence test parameter is set On 1 Under prism mod...

Страница 67: ...congregation capability Test sighting mark the column sighting marks in the visual chart Assistant lens binocular rotatory prism Make sure the Congregation and divergence test parameter is set On 1 P...

Страница 68: ...ke them off Test purpose to test split point Test sighting mark cross fixation sighting mark or nib that can easily cause diplopia 1 Press choose Near Point 2 NPC NPA NRA PRA showing simultaneously to...

Страница 69: ...showing simultaneously to shift to short distance mode 2 Press NPA to open binocular testing window 3 Place the visual chart in the distance of 40cm make sure the patient see clearly the letter sight...

Страница 70: ...ed then save the prismatic power of the obscure point 5 Press and to gradually adjust the spherical power until the sighting mark becomes distinct again Press the recover icon and it is highlighted th...

Страница 71: ...point 5 Press and to gradually adjust the spherical power until the sighting mark becomes distinct again Press the recover icon and it is highlighted then save the prismatic power of the recover point...

Страница 72: ...67 3 Program 1 A B C D are recommended vision test steps users can also add or delete as needed...

Страница 73: ...68 2 E F G H are empty status users can customize all the steps by themselves 3 Keys Introduction Edit Key Click it to enter program customizing interface Clear Key Click it to delete this step...

Страница 74: ...69 Add Key Click it to add one step automatically 4 Click key to enter program customizing interface...

Страница 75: ...70 5 Headline can be input into the Program E box According to user s need Editting the vision test program and then click OK key to save the setting...

Страница 76: ...71 5 6 2 Run Customized Program 1 Go back to Measurement Interface Click key to popup the program choice box 2 Choose Program E...

Страница 77: ...lick key to start to run customized program 5 7 Communication 5 7 1 Communication with Lensmeter CCQ 800 1 Use special communication cable to connect CCQ 800 to the R232 port of the print box 2 Click...

Страница 78: ...73 3 Click key to popup input box...

Страница 79: ...74 4 Use CCQ 800 lensmeter to test lens data and convey the date to YPA 2100 5 Click key 6 Choose No00001...

Страница 80: ...75 7 Click key to complete data import...

Страница 81: ...the device as per below chart to obtain guidance If the trouble is not shot please contact with Chongqing Yeasn Science Technology Co Ltd Maintenance Department or the authorized dealer Trouble Reaso...

Страница 82: ...nal position Insert it into the device in a certain direction 7 2 Clean the nose baseplate Clean the nose baseplate before every optical test 1 Take off the nose baseplate from the vision tester host...

Страница 83: ...ow gently when cleaning it Otherwise it may scratch the testing window glass 7 4 Clean external parts When the external parts such as the enclosure or panel get dirty please wipe them gently with clea...

Страница 84: ...ut in the new printing paper Attention Pay attention to the paper roll s direction If the paper roll is installed reversely the printer won t print any data 3 Put the printing paper through the paper...

Страница 85: ...a failure occurs please contact with local dealer or manufacturer 8 5 The company is committed to providing users with necessary circuit diagrams part list and other relevant materials as needed 9 En...

Страница 86: ...repairs are carried out by authorized personnel by the company Electrical facilities in the room are in conformity with relevant requirements and The device is used according to the User Manual 12 Sy...

Страница 87: ...82 13 Electrical Schematic Diagram For further information and services or any questions please contact with the authorized dealer or manufacturer We will be happy to help you...

Страница 88: ...nce RF emissions GB 4824 CISPR 11 Group 1 The device uses RF energy only for its internal function Therefore its RF emissions are very low and not likely to cause interference in nearby electronic equ...

Страница 89: ...V line to earth 1kV line to line 2kV lien to earth 1kV line to line 2kV line to earth Mains power quality should be that of a typical commercial or hospital environment Voltage dips short interruption...

Страница 90: ...strengths from fixed RF transmitters as determined by an electromagnetic site survey a should be less than the compliance level in each frequency range b Interference may occur in the vicinity of equi...

Страница 91: ...n distance according to frequency of transmitter m 150kHz 80MHz d 1 2 80MHz 800MHz d 1 2 800MHz 2 5GHz d 2 3 0 01 0 12 0 12 0 23 0 1 0 38 0 38 0 73 1 1 2 1 2 2 3 10 3 8 3 8 7 3 100 12 12 23 For transm...

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