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1. R 2500 MANUAL REFRACTOR User s Manual LUXVISION PRECISION INSTRUMENTS Notification Dear Users Thank you for your purchase of R 2500 Refractor Please take time to read our user s manual carefully before use This guarantees you to make full use of this unit and prolongs the operation life of this unit Content Standard EQUIDMMSME arsin adena oaa aa Aah E N ANET 4 SUBJECTIVE Eye TOSTSH ssanirinks iina neie riai aaaea E ia Aaa 5 Aee a n E A E E E eye nates 6 Details of Auxiliary LENSES sisisi sisian si iaaii ninae eis tankkaa Kien A TA Ngek 7 Measuring PEtOrnmance i cicceeisascatedtaandevdeeeatasisvis AEE ENTRENA EE ERKANIN CEAP ENEAN 8 Preparation Before Eye Testing isimrrsicirarsieriirnrniiri randers rnst daniii 8 Measuring Myopia and AstigmatiS i woo cect tree etree eraeeeerenateeene 9 Precision Measurements of Astigmatic AXIS sesssissiiriiinasiii svenire 11 Precision Measurement of Astigmatic POWET iiisircnscnenaeiinsariasi an 12 Precision Measurement of Spherical POWE cccccceceeeeeceeeeeseeeeeeeeeeetetaeees 12 Eye Balance TeSt anran a oane E oa ENAERE A AE aai 13 Measuring PresbDyopia r saiieteichstenies enian daaa iaa aaa iaaii 14 Measuring Heterophoria horizontal c ec cceeeeccecseeseeeecseeeeeeeeeseeeeeeseseaeeess 15 Measuring Heterophoria vertical ccccccccececsstteeeeessteeeecsssseeeeessseeeeeeeeaas 16 Details of Rotating Near Point Chart ecossnsasiiiniieinn sinon
2. 16 s Distance Compensatii anini deat a ia a ae 17 s SPSCIICALOMS anona a aE E ONAE O OE ANN A ON 19 1 Standard equipment 1 Main body of instrument 1 set 8 2 00C auxiliary lenses 2 pcs 2 Near point scale 1 pce 9 Silicon cloth 1 pce 3 Near point chart holder 1 pce 10 Dust cover 1 pce 4 Rotating near point chart 1 pce 11 Sanitary face shields 5 Accessory case 1 pce 1 each right and left 6 Air brush 1 pce 12 Fitting screw 1 pce 7 0 12C auxiliary lenses 2 pcs 13 Polystyrene case 1 pce 2 5 6 1 3 13 4 Fig 1 The polystyrene case should be retained for use when sending the instrument back to the representative or manufacturer for overhaul etc 2 Subjective Eye Tester A New levelling mechanism B Fingertip adjustment for sphere power control Just the right figure from O to 19 00D and O to 16 75D obtained with light fingertip control of the fast feed dial Optional 10 00D lenses are also available C Measuring astigmatism Readings O to 6 00D which become possible up to 8 00D with the accessory lenses 2 00D Used in combination with the cross cylinder for precision measurement D Cross cylinder 0 250 Tests are speeded up by eliminating the need for axis adjustment a very efficient synchronizing mechanism being provided and the loupe is readily turned by means of the knob E Rotary prism The wider 1A D spacing in the 20A D range simplifies reading and incorporation
3. for the left eye at click stop position in the horizontal phoria measuring direction Turn the rotary prism Knob slowly until the two images are aligned as in Fig 17 The scale reading when both aligned is a degree of the horizontal phoria 15 14 Measuring Heterophoria Vertical Measured in the same procedure as above with use of the RMV auxiliary lens If used with the WMH and WMV auxiliary lenses for the left eye also measured in the same procedure 15 Details of Rotating Near Point Chart The standard examination distance for this near point chart is 40cm but the No 12 test should be used at a distance of 70cm 1 Sentences 0 4 1 0 7 Sentences 0 1 0 3 2 Alphabetical letters 0 5 1 0 8 Alphabetical letters 0 1 0 4 8 Cross cylinder grid thin lines 9 Cross cylinder grid thick lines 4 Sentence 10 Vertical row of sentence 5 Alphabetical letters 11 Alphabetical letters 6 Astigmatic chart 12 Intermediate distance chart at an examination distance of 70cm 1 Everything was bright and fresh and thera was a Saturday H V Z R E moming came REKVDSO All the summer 7 i world was i tulloflife 16 16 Distance Compensation If the distance between the instrument and the examinee is not as specified distance compensation should be carried out See 6 F Fig 7 When the Sphere power is Plus If the distance is shorter compensation If the distance is longer compen
4. to compare darkness of the vertical and horizontal lines For a presbyope a range of accommodation is smaller usually the horizontal lines will be seen darker Add the sphere powers in both the right and left sohere power reading windows 0 25D at a time simultaneously and stop this procedure when both the vertical and horizontal lines are seen equally well Now the spherical power for near point is determined The value taken the distance sphere from the near point sphere is an ADD power This is required for checking clearness at intermediate distance or prescription of a continuous vision lens 14 13 Measuring Heterophoria Horizontal A D Project a fixation light a point light or a fixation point from the projector at a distance Insert the RMH auxiliary lens for the right eye and the O open for the left eye When seen with the right eye the image appears as in Fig 16 and when seen with the left eye a point light appears as in Fig 15 T aad li l m Ii Ne 4 Fi ERO Noan Left eye Fig 15 Right eye Fig 16 If there is no phoria when seen with both eyes the two images appear as in Fig 17 If there is a horizontal phoria the two images appear disaligned as in Fig 18 and Fig 19 oS ES Pam ae CLS fEN FEN i o ees arom j i ii e m A m ri 7N om id d ui Fi ii F E F Se gale a mo Fig 17 Fig 18 Fig 19 If there is a horizontal phoria set the rotary prism
5. ad rest adjusting knob 8 until the scale O on the corneal backsight 26 the corneal foresight 25 and the vertex of the cornea of the examinee are all in a straight line Fig 7 O Position Examinee Fig 7 Fig 8 Distance from the vertex of the cornea of the examinee to the surface of the lens 12mm 7 Measuring Myopia and Astigmatism A Begin readings at about 3 0D in the case of an examinee with naked eye visual power around 0 5 0 6 and in the case of an examinee who wears spectacles first find the power of the spectacles with a Lensmeter and begin readings with a figure added 3 00D to the measured power B First the right eye should be measured Cover the left eye Turn the auxiliary lens control knob 17 and when the OC mark is aligned with the auxiliary lens mark 32 the left eye is covered Fig 8 C Turn the sphere power control ring on one side and reduce 0 25D at a time 3 00D 2 75D 2 50D until a visual acuity of about 0 5 is obtained 9 we al a wat 4P feu ee e ae I i aS E Fig 10 KAI Have the examinee look at astigmatic visual acuity chart Fig 9 If all the lines appear to him to be equally thick and dark there is no abnormality but if lines in one direction appear to him to be lighter or darker than the others then he has astigmatism and proceed with the following tests Think of the astigmatism chart as the dial plate of a clock and supp
6. e spherical power first the right eye should be measured with occlusion of the left eye Have the examinee look at both the red and green tests on the visual acuity chart and have him compare clearness of the black in the red andgreen tests If the in both tests can be seen equally well it shows that the corrected power is actually correct but if either of these colors can be seen well carry out the following procedure If the red can be seen well increase the reading in the sphere power reading window 11 by 0 25D and if the green can be seen well increase the reading by 0 25D Continue to make adjustments until both red and green tests can be seen equally well Have the examinee look at the visual acuity chart and try to obtain a maximum visual acuity that he can read 12 E Have the examinee lock at a teat where the maximum visual acuity has been obtained and add spherical power by 0 25D If the test is out of focus restore the spherical power to the former reading and measurements are finished now but if in focus carry out the following procedure Add more 0 25D and restore the spherical power where the test has been out of focus to the former reading and measurements are finished now Measure the left eye in the same procedure Eye Balance Test Have the examinee look at about 0 7 point on the visual acuity chart Set the rotary prisms 12 at the right and left main apertures 28 Note the rotary pr
7. into the main body of the instrument means that a maximum field of view is obtained F Unique new convergence system mechanism Convergence lever control for precision near point readings G Wide range of auxiliary lens combinations See details on the page 6 H Precision machined to finest tolerances The use of top quallity bearings and elimination of the need for periodic lubrication 3 Names of Parts Fig 2 AOCON OO RWONM OahwWwnh O i i i i L i 4 Locking knob Clamp bracket Levelling knob Interpupillary adjustment knob Convergence lever Level Interpupillary scale Forehead rest adjusting knod Sphere power control ring Cross cylinder Sphere power reading window Rotary prism Cylinder lens axis control ring Cylinder lens power control knob Cylinder lens axis scale A Sphere power rapid feed dial Auxiliary lens control knob Auxiliary lens symbols Astigmatism scale Cylinder lens axis index Cylinder lens axis scale Accessory lens pinhole Near point scale receiver Forehead rest Corneal foresight Corneal backsight Sanitary face shield Main aperture Cross cylinder rotating knob Rotary prism knob Astigmatic axis index Auxiliary lens mark Details of Auxiliary Lenses 12 Kinds of auxiliary lenses can be set at each main aperture on right and left sides Fig Oisian Open aperture OCs Occluder EDO in 0 50 cross cylinder 6A U 6 prism diopter base Up 104 10 pris
8. ism knobs 30 should be set at click stop position on the ears side of the examinee Next insert a 2A DBU prism in the left and a 2A DBD in the right See Fig 13 The visual line from the left eye moves in the lower direction and that from the right eye moves in the upper direction When the examinee looks at the test chart with binocular vision he can see it split into two an upper and a lower i e the lower part in the left eye and the upper part in the right eye If both upper and lower parts can be seen equally well it shows that the right and left eyes are balanced If either of the upper and lower parts can be seen well carry out the following procedure Add 0 25D at a time to the spherical power for the eye where the test chart has been able to be seen well until both eyes can balanced If balance can not be obtained try to improve the visual acuity of the dominant eye 13 12 Measuring Presbyopia A Make perfect correction of the refraction anomaly in distant vision and make a setting of the instrument based on the result Set a 0 50 auxiliary cross cylinder lens in place for each eye Turn the convergence levers 5 inward Set a near point chart in a fixed place of the instrument Allow the examinee to choose the distance at which the chart is set up and select a cross cylinder grid on the near point chart Cross cylinder grid Fig 14 Have the examinee look at the cross cylinder grid with both eyes
9. m diopter base In PH Pinhole 12 40 12D sphere lens 19 P45 Polarizing filter axis 45 P135 Polarizing filter axis 135 R Retinoscopic lens 2 00D for 50cm 48mm to 80mm in 1mm step right and left synchronized 16mm backward and forward The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas 2mm each for right and left inward Interpupillary distance enabling convergence 57mm to 80mm 2mm forward and 5mm backward from standard plane with scale 19mm 20 mms R 2500 MANUAL REFRACTOR LUXVISION is not responsible or liable for indirect special or consequential damages arising out of or in connection with the use or performance of the product or damages with respect to any economic loss loss of property loss of revenues or profits loss of enjoyment or use costs of removal or installation or other consequential damages of whatsoever nature Some states do not allow the exclusion or limitation of incidental or consequential damages Accordingly the above limitation may not apply to you Every effort has been made to ensure the accuracy of this manual However LUXVISION makes no warranties with respect to the documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose LUXVISION Inc shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing performance or u
10. m diopter hase In Pla ceira Pinhole 12 0 0 12D auxiliary lens Ple eee Red filter Glide Green filter Red maddox rod horizontal White maddox rod horizontal Red maddox rod vertical White maddox rod vertical Polarizing filter axis 135 Polarizing filter axis 45 Retinoscopic lens 2 00D for 50cm 5 A Measuring Performance Provides highly accurate readings over a wide range Used in measurements of Myopia Astigmatism Hyperopia Presbyopia Heterophoria Range of Accommodation Convergence Aniseiconia Stereopsis and Binocular Vision Rapid accurate readings on binocular visual balance Speedy astigmatism tests With interlocking mechanism of the cross cylinder lens axis and the cylinder lens axis control ring one touch accurate astigmatism readings are now possible In short middle and long distance tests it is possible to have the optical axis of the lens and the line of examinee s vision coincide Preparation Before Eye Testing Have the examinee sit on an eye examination chair Adjust both readings in the sphere power reding window 11 and astigmatism scale 19 to 0 00 Fig 4 Adjust the interpupillary scale 7 setting to the interpupillary distance of the examinee Fig 5 Level the instrument with the levelling knob 8 while watching the level 6 Fig 6 Align the examinee s eyes with the right and left main apertures 28 and tighten the arm fixing knob Turn the forehe
11. osing that the examinee answers that he can see the lines pointing in the direction of one o clock clearly take 1 x 30 times 30 and align the astigmatic axis index 81 with the 30 position by turning the cylinder lens axis control ring 13 Turn the cylinder lens power control knob 14 increasing the power until all lines on the astigmatism chart appear to be of equal darkness Turn the sphere power control ring 9 until a visual acuity of about 1 0 is obtained Example In case of myopia the sohere power is 1 75D to be minimum degree when a maximum visual acuity of 1 0 is obtained Sphere power Visual acuity 1 00D 0 7 1 25D 0 8 1 50P 0 9 1 75D 1 0 2 00D 1 0 2 25D 1 0 Measure the left eye in the same procedure 10 8 Precision Measurement of Astigmatic Axis A Set the cross cylinder 10 at the main aperture B Turn the periphery of the cross cylinder to adjust the axis of the cross cylinder rotating knob 29 in the same direction as astigmatic axis 7 E and set it at click stop position C Now have the examinee look at visual acuity charts about two steps lower than those which he has been able to see For example if he has been able to read those at 1 0 point now have him look at those for 0 8 D Turn surfaces 1 and 11 of the cross cylinder 10 alternately and have the examinee look at them If both surfaces can be seen equally well there is no abnormality but if one is more clea
12. rly seen than the other carry out the following procedure E Stop turn at the surface which is clearly seen next move and shift the astigmatic axis 5 in the direction of red dots on the cross cylinder by the cylinder lens axis control ring 13 F When surfaces and II can both be seen equally well after this method is used and tests repeated two or three times it is determination of an astigmatic axis 11 9 Precision Measurement of Astigmatic Power Turn the periphery of the cross cylinder to adjust the axis of the P marks in the same direction as astigmatic axis and set it at click stop position Turn surface and II alternately and have the examinee look at them If both surfaces can be seen equally well there is no abnormality but if one is more clearly seen than the other carry out the following procedure Stop turn at the surface which is clearly seen Then if the P marks align with the red dots add astigmatic power 0 25D by turning the cylinder lens power control knob 14 and if the P marks align with the black dots decrease astigmatic power 1 25D And again turn surfaces and II of the cross cylinder and repeat procedures from B When both surfaces can be seen equally well it is determination of an astigmatic axis Measure the left eye in the same procedure and after finished move the cross cylinder from the main aperture Precision Measurement of Spherical Power For fine adjustment of th
13. sation When the Sphere power is Minus If the distance is shorter compensation If the distance is longer compensation Example If with a sphere power reading of 10 00 the distance is 5mm longer than specified a correction should be 0 52 according to the compensation table making 10 52D 10 00 0 52 10 52 Distance Compensation Table with Sphere Distance Distanoe O Csisdz Foc oos oo oos 006 oor oo 000 for o foa fo o o o fo o o e o 2 e 1 r a e me a a e e o o e 90 17 Distance Compensation Table with Sphere Distance oot 008 oos 004 005 00s 007 006 ALACA foros 08 or 03 05 o os o9 11 12 0 0 C 18 17 Specifications Sphere powers range Cylinder powers range Astigmatic axis scale Cross cylinder Rotary prism Auxiliary lens Right eye 16 75D to 19 00D with minimum reading 0 25D or 0 12D when 0 12D auxiliary lens or optional 0 12D lens is in use 26 75D to 29 00D when optional 10 00D lens is in use O to 6 00D with minimum reading 0 25D or 0 12D when auxiliary lens is in use O to 8 00D when 2 00D auxiliary lens is in use O to 180 in 5 steps 0 25D reversal type synchronized with astigmatic axis 0 50D optional O to 20A D in 1A D step Left eye O Open aperture OC Occluder 50 Fixed cross cylinder 6A U 6 prism dioter base Up 10A 10 pris
14. se of this manual or the examples herein The information in this document is subject to change without notice 9990 NW 14 Street Suite 105 Doral FL 33172 Telephone 888 334 4640 21
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