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Class   351OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING
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[List of Pre Grant Publications for class 351 subclass 200][List of Patents for class 351 subclass 200]200 EYE EXAMINING OR TESTING INSTRUMENT
[List of Pre Grant Publications for class 351 subclass 201][List of Patents for class 351 subclass 201]201 Subclass 201 indent level is 1 For fusion and space perception testing (e.g., stereoscopic vision)
 [List of Pre Grant Publications for class 351 subclass 202][List of Patents for class 351 subclass 202]202 Subclass 202 indent level is 2 Of abnormal muscular functioning
 [List of Pre Grant Publications for class 351 subclass 203][List of Patents for class 351 subclass 203]203 Subclass 203 indent level is 1 Eye exercising or training type
 [List of Pre Grant Publications for class 351 subclass 204][List of Patents for class 351 subclass 204]204 Subclass 204 indent level is 1 For interpupillary distance measuring or lens positioning
[List of Pre Grant Publications for class 351 subclass 205][List of Patents for class 351 subclass 205]205 Subclass 205 indent level is 1 Objective type
[List of Pre Grant Publications for class 351 subclass 206][List of Patents for class 351 subclass 206]206 Subclass 206 indent level is 2 Including eye photography
[List of Pre Grant Publications for class 351 subclass 209][List of Patents for class 351 subclass 209]209 Subclass 209 indent level is 2 Including eye movement detection
[List of Pre Grant Publications for class 351 subclass 211][List of Patents for class 351 subclass 211]211 Subclass 211 indent level is 2 Including projected target image
 [List of Pre Grant Publications for class 351 subclass 213][List of Patents for class 351 subclass 213]213 Subclass 213 indent level is 2 Including light filter or absorber
 [List of Pre Grant Publications for class 351 subclass 214][List of Patents for class 351 subclass 214]214 Subclass 214 indent level is 2 Including diaphram or slit
 [List of Pre Grant Publications for class 351 subclass 215][List of Patents for class 351 subclass 215]215 Subclass 215 indent level is 2 Including light polarizing means
[List of Pre Grant Publications for class 351 subclass 216][List of Patents for class 351 subclass 216]216 Subclass 216 indent level is 2 Including lens selectively insertable in optical path
 [List of Pre Grant Publications for class 351 subclass 219][List of Patents for class 351 subclass 219]219 Subclass 219 indent level is 2 With contact lens
 [List of Pre Grant Publications for class 351 subclass 220][List of Patents for class 351 subclass 220]220 Subclass 220 indent level is 2 Including reflectors with off-set surfaces
 [List of Pre Grant Publications for class 351 subclass 221][List of Patents for class 351 subclass 221]221 Subclass 221 indent level is 2 Including illuminator
[List of Pre Grant Publications for class 351 subclass 222][List of Patents for class 351 subclass 222]222 Subclass 222 indent level is 1 Subjective type
 [List of Pre Grant Publications for class 351 subclass 223][List of Patents for class 351 subclass 223]223 Subclass 223 indent level is 2 Self examining type
[List of Pre Grant Publications for class 351 subclass 224][List of Patents for class 351 subclass 224]224 Subclass 224 indent level is 2 Perimeter type
[List of Pre Grant Publications for class 351 subclass 227][List of Patents for class 351 subclass 227]227 Subclass 227 indent level is 2 Including trial frame
 [List of Pre Grant Publications for class 351 subclass 232][List of Patents for class 351 subclass 232]232 Subclass 232 indent level is 2 With light polarzing lens
[List of Pre Grant Publications for class 351 subclass 233][List of Patents for class 351 subclass 233]233 Subclass 233 indent level is 2 Lens or filter selectively insertable in optical path
[List of Pre Grant Publications for class 351 subclass 237][List of Patents for class 351 subclass 237]237 Subclass 237 indent level is 2 Including target image projection
[List of Pre Grant Publications for class 351 subclass 239][List of Patents for class 351 subclass 239]239 Subclass 239 indent level is 2 Including test chart or target
 [List of Pre Grant Publications for class 351 subclass 245][List of Patents for class 351 subclass 245]245 Subclass 245 indent level is 1 Support
[List of Pre Grant Publications for class 351 subclass 246][List of Patents for class 351 subclass 246]246 Subclass 246 indent level is 1 Methods of use
 [List of Pre Grant Publications for class 351 subclass 247][List of Patents for class 351 subclass 247]247 Subclass 247 indent level is 2 For contact lens fitting
[List of Pre Grant Publications for class 351 subclass 41][List of Patents for class 351 subclass 41]41 SPECTACLES AND EYEGLASSES
 [List of Pre Grant Publications for class 351 subclass 42][List of Patents for class 351 subclass 42]42 Subclass 42 indent level is 1 Lens repair devices
 [List of Pre Grant Publications for class 351 subclass 43][List of Patents for class 351 subclass 43]43 Subclass 43 indent level is 1 Floating or underwater type
[List of Pre Grant Publications for class 351 subclass 44][List of Patents for class 351 subclass 44]44 Subclass 44 indent level is 1 With antiglare or shading
 [List of Pre Grant Publications for class 351 subclass 45][List of Patents for class 351 subclass 45]45 Subclass 45 indent level is 2 Partially occluding the light-path area
 [List of Pre Grant Publications for class 351 subclass 46][List of Patents for class 351 subclass 46]46 Subclass 46 indent level is 2 Perforated opaque plates or shields
[List of Pre Grant Publications for class 351 subclass 47][List of Patents for class 351 subclass 47]47 Subclass 47 indent level is 2 Removable and/or adjustable filters or screens (e.g., clip-on type)
 [List of Pre Grant Publications for class 351 subclass 49][List of Patents for class 351 subclass 49]49 Subclass 49 indent level is 2 Polarizing
 [List of Pre Grant Publications for class 351 subclass 50][List of Patents for class 351 subclass 50]50 Subclass 50 indent level is 1 With rear-view reflectors
[List of Pre Grant Publications for class 351 subclass 51][List of Patents for class 351 subclass 51]51 Subclass 51 indent level is 1 With decoration or ornamentation
 [List of Pre Grant Publications for class 351 subclass 52][List of Patents for class 351 subclass 52]52 Subclass 52 indent level is 2 Detachably secured
 [List of Pre Grant Publications for class 351 subclass 53][List of Patents for class 351 subclass 53]53 Subclass 53 indent level is 1 Shooting type
 [List of Pre Grant Publications for class 351 subclass 54][List of Patents for class 351 subclass 54]54 Subclass 54 indent level is 1 Invertible or reversible multifocal type
 [List of Pre Grant Publications for class 351 subclass 55][List of Patents for class 351 subclass 55]55 Subclass 55 indent level is 1 With vertical adjustment of multifocal lenses
 [List of Pre Grant Publications for class 351 subclass 56][List of Patents for class 351 subclass 56]56 Subclass 56 indent level is 1 Lorgnette type
[List of Pre Grant Publications for class 351 subclass 57][List of Patents for class 351 subclass 57]57 Subclass 57 indent level is 1 With auxiliary lenses movable in and out of the optical path (e.g., clip-on type attachments)
 [List of Pre Grant Publications for class 351 subclass 58][List of Patents for class 351 subclass 58]58 Subclass 58 indent level is 2 Spring biased or secured by friction members
 [List of Pre Grant Publications for class 351 subclass 59][List of Patents for class 351 subclass 59]59 Subclass 59 indent level is 1 Lens pivots in and out of optical path
 [List of Pre Grant Publications for class 351 subclass 60][List of Patents for class 351 subclass 60]60 Subclass 60 indent level is 1 With lens suspension bar (e.g., torsion bar)
 [List of Pre Grant Publications for class 351 subclass 61][List of Patents for class 351 subclass 61]61 Subclass 61 indent level is 1 U-shape or half-moon lens below eye level
 [List of Pre Grant Publications for class 351 subclass 62][List of Patents for class 351 subclass 62]62 Subclass 62 indent level is 1 With moisture prevention or absorption
[List of Pre Grant Publications for class 351 subclass 63][List of Patents for class 351 subclass 63]63 Subclass 63 indent level is 1 Folding
 [List of Pre Grant Publications for class 351 subclass 64][List of Patents for class 351 subclass 64]64 Subclass 64 indent level is 2 Pince-nez type
[List of Pre Grant Publications for class 351 subclass 65][List of Patents for class 351 subclass 65]65 Subclass 65 indent level is 1 Pince-nez type (including pince-nez bridges, nose grips and nose pads therefor)
 [List of Pre Grant Publications for class 351 subclass 66][List of Patents for class 351 subclass 66]66 Subclass 66 indent level is 2 With ear chain or temple
 [List of Pre Grant Publications for class 351 subclass 67][List of Patents for class 351 subclass 67]67 Subclass 67 indent level is 2 Plural bridges
 [List of Pre Grant Publications for class 351 subclass 68][List of Patents for class 351 subclass 68]68 Subclass 68 indent level is 2 With resilient extensible bridge
 [List of Pre Grant Publications for class 351 subclass 69][List of Patents for class 351 subclass 69]69 Subclass 69 indent level is 2 Lens and nose grip movable on flexible bridge
 [List of Pre Grant Publications for class 351 subclass 70][List of Patents for class 351 subclass 70]70 Subclass 70 indent level is 2 Posts or studs connecting bridge and nose grip
[List of Pre Grant Publications for class 351 subclass 71][List of Patents for class 351 subclass 71]71 Subclass 71 indent level is 2 With spring biased nose grips
[List of Pre Grant Publications for class 351 subclass 76][List of Patents for class 351 subclass 76]76 Subclass 76 indent level is 2 With adjustable or rockable nose grips or pads
[List of Pre Grant Publications for class 351 subclass 78][List of Patents for class 351 subclass 78]78 Subclass 78 indent level is 2 Nose pads or cushions
[List of Pre Grant Publications for class 351 subclass 83][List of Patents for class 351 subclass 83]83 Subclass 83 indent level is 1 Continuous rim mounting
 [List of Pre Grant Publications for class 351 subclass 84][List of Patents for class 351 subclass 84]84 Subclass 84 indent level is 2 With rotating means for multifocal lenses
 [List of Pre Grant Publications for class 351 subclass 85][List of Patents for class 351 subclass 85]85 Subclass 85 indent level is 2 Upper rim portion slotted
 [List of Pre Grant Publications for class 351 subclass 86][List of Patents for class 351 subclass 86]86 Subclass 86 indent level is 2 With lens retaining or locking means
 [List of Pre Grant Publications for class 351 subclass 87][List of Patents for class 351 subclass 87]87 Subclass 87 indent level is 2 Nose guards or pads integral with frame
 [List of Pre Grant Publications for class 351 subclass 88][List of Patents for class 351 subclass 88]88 Subclass 88 indent level is 2 Nose guards or pads removable or adjustable
 [List of Pre Grant Publications for class 351 subclass 89][List of Patents for class 351 subclass 89]89 Subclass 89 indent level is 2 With brace arm temple support
[List of Pre Grant Publications for class 351 subclass 90][List of Patents for class 351 subclass 90]90 Subclass 90 indent level is 1 Split rim mounting
[List of Pre Grant Publications for class 351 subclass 91][List of Patents for class 351 subclass 91]91 Subclass 91 indent level is 2 With brow pieces or top arms
 [List of Pre Grant Publications for class 351 subclass 93][List of Patents for class 351 subclass 93]93 Subclass 93 indent level is 2 With brace arm supports for temple or lens
 [List of Pre Grant Publications for class 351 subclass 94][List of Patents for class 351 subclass 94]94 Subclass 94 indent level is 2 With auxiliary bridge
 [List of Pre Grant Publications for class 351 subclass 95][List of Patents for class 351 subclass 95]95 Subclass 95 indent level is 2 Expansible and contractible lens rim
 [List of Pre Grant Publications for class 351 subclass 96][List of Patents for class 351 subclass 96]96 Subclass 96 indent level is 2 Locking member secures lens against rotation
 [List of Pre Grant Publications for class 351 subclass 97][List of Patents for class 351 subclass 97]97 Subclass 97 indent level is 2 Split connected by U-clamps or pivot links
 [List of Pre Grant Publications for class 351 subclass 98][List of Patents for class 351 subclass 98]98 Subclass 98 indent level is 2 Split on nasal side of rim (i.e., at bridge)
 [List of Pre Grant Publications for class 351 subclass 99][List of Patents for class 351 subclass 99]99 Subclass 99 indent level is 2 Clamp and temple pivot screw spaced along rim clamping arm
 [List of Pre Grant Publications for class 351 subclass 100][List of Patents for class 351 subclass 100]100 Subclass 100 indent level is 2 Clamp and temple pivot screw coincident on rim clamping arm
 [List of Pre Grant Publications for class 351 subclass 101][List of Patents for class 351 subclass 101]101 Subclass 101 indent level is 2 Metal clamps embrace the rims and connect to bridge and/or temples
 [List of Pre Grant Publications for class 351 subclass 102][List of Patents for class 351 subclass 102]102 Subclass 102 indent level is 2 Combined metal and plastic rims
[List of Pre Grant Publications for class 351 subclass 103][List of Patents for class 351 subclass 103]103 Subclass 103 indent level is 1 Brace arm or semi-rimless mounting
 [List of Pre Grant Publications for class 351 subclass 104][List of Patents for class 351 subclass 104]104 Subclass 104 indent level is 2 Arm or rim of plastic or of different material (e.g., metal and plastic)
 [List of Pre Grant Publications for class 351 subclass 105][List of Patents for class 351 subclass 105]105 Subclass 105 indent level is 2 Detachable brace arm
 [List of Pre Grant Publications for class 351 subclass 106][List of Patents for class 351 subclass 106]106 Subclass 106 indent level is 2 Screwless lens mounting
 [List of Pre Grant Publications for class 351 subclass 107][List of Patents for class 351 subclass 107]107 Subclass 107 indent level is 2 With adjustable lens or frame part
 [List of Pre Grant Publications for class 351 subclass 108][List of Patents for class 351 subclass 108]108 Subclass 108 indent level is 2 Brace arm supports lens at two spaced points or constitutes a partial rim
 [List of Pre Grant Publications for class 351 subclass 109][List of Patents for class 351 subclass 109]109 Subclass 109 indent level is 2 Brace arm extends along edge of lens
 [List of Pre Grant Publications for class 351 subclass 110][List of Patents for class 351 subclass 110]110 Subclass 110 indent level is 1 Rimless mounting
[List of Pre Grant Publications for class 351 subclass 111][List of Patents for class 351 subclass 111]111 Subclass 111 indent level is 1 Temples
 [List of Pre Grant Publications for class 351 subclass 112][List of Patents for class 351 subclass 112]112 Subclass 112 indent level is 2 With pocket clip or clasp
 [List of Pre Grant Publications for class 351 subclass 113][List of Patents for class 351 subclass 113]113 Subclass 113 indent level is 2 Spring biased
 [List of Pre Grant Publications for class 351 subclass 114][List of Patents for class 351 subclass 114]114 Subclass 114 indent level is 2 Resilient or flexible
 [List of Pre Grant Publications for class 351 subclass 115][List of Patents for class 351 subclass 115]115 Subclass 115 indent level is 2 Reversible or axially rotatable
 [List of Pre Grant Publications for class 351 subclass 116][List of Patents for class 351 subclass 116]116 Subclass 116 indent level is 2 Detachable
 [List of Pre Grant Publications for class 351 subclass 117][List of Patents for class 351 subclass 117]117 Subclass 117 indent level is 2 With covered core or rod (e.g., reinforced)
 [List of Pre Grant Publications for class 351 subclass 118][List of Patents for class 351 subclass 118]118 Subclass 118 indent level is 2 Extensible (e.g., with adjustable sleeve member
 [List of Pre Grant Publications for class 351 subclass 119][List of Patents for class 351 subclass 119]119 Subclass 119 indent level is 2 Two-part type (e.g., jointed)
 [List of Pre Grant Publications for class 351 subclass 120][List of Patents for class 351 subclass 120]120 Subclass 120 indent level is 2 Inclined to lens plane
 [List of Pre Grant Publications for class 351 subclass 121][List of Patents for class 351 subclass 121]121 Subclass 121 indent level is 2 With connector
 [List of Pre Grant Publications for class 351 subclass 122][List of Patents for class 351 subclass 122]122 Subclass 122 indent level is 2 With skin protecting earpiece covering
 [List of Pre Grant Publications for class 351 subclass 123][List of Patents for class 351 subclass 123]123 Subclass 123 indent level is 2 With head or ear engaging attachments
[List of Pre Grant Publications for class 351 subclass 124][List of Patents for class 351 subclass 124]124 Subclass 124 indent level is 1 Bridges
 [List of Pre Grant Publications for class 351 subclass 125][List of Patents for class 351 subclass 125]125 Subclass 125 indent level is 2 Crossbar type
[List of Pre Grant Publications for class 351 subclass 126][List of Patents for class 351 subclass 126]126 Subclass 126 indent level is 2 Flexible
 [List of Pre Grant Publications for class 351 subclass 128][List of Patents for class 351 subclass 128]128 Subclass 128 indent level is 2 Adjustable
 [List of Pre Grant Publications for class 351 subclass 129][List of Patents for class 351 subclass 129]129 Subclass 129 indent level is 2 Reinforced
 [List of Pre Grant Publications for class 351 subclass 130][List of Patents for class 351 subclass 130]130 Subclass 130 indent level is 2 With auxiliary support
 [List of Pre Grant Publications for class 351 subclass 131][List of Patents for class 351 subclass 131]131 Subclass 131 indent level is 2 With nose grip or guard integral with bridge
 [List of Pre Grant Publications for class 351 subclass 132][List of Patents for class 351 subclass 132]132 Subclass 132 indent level is 2 With nose grip, nose guard, pad, or cushion
[List of Pre Grant Publications for class 351 subclass 133][List of Patents for class 351 subclass 133]133 Subclass 133 indent level is 2 With connectors or straps
[List of Pre Grant Publications for class 351 subclass 136][List of Patents for class 351 subclass 136]136 Subclass 136 indent level is 1 Nose pads or cushions
 [List of Pre Grant Publications for class 351 subclass 137][List of Patents for class 351 subclass 137]137 Subclass 137 indent level is 2 Adjustable, rockable, or pivotable
 [List of Pre Grant Publications for class 351 subclass 138][List of Patents for class 351 subclass 138]138 Subclass 138 indent level is 2 Detachable
 [List of Pre Grant Publications for class 351 subclass 139][List of Patents for class 351 subclass 139]139 Subclass 139 indent level is 2 With cover or coating
[List of Pre Grant Publications for class 351 subclass 140][List of Patents for class 351 subclass 140]140 Subclass 140 indent level is 1 Connectors
 [List of Pre Grant Publications for class 351 subclass 141][List of Patents for class 351 subclass 141]141 Subclass 141 indent level is 2 With screw locking means
[List of Pre Grant Publications for class 351 subclass 142][List of Patents for class 351 subclass 142]142 Subclass 142 indent level is 2 Strap type
 [List of Pre Grant Publications for class 351 subclass 153][List of Patents for class 351 subclass 153]153 Subclass 153 indent level is 2 With particular hinge
 [List of Pre Grant Publications for class 351 subclass 154][List of Patents for class 351 subclass 154]154 Subclass 154 indent level is 1 Lens linings or rims
[List of Pre Grant Publications for class 351 subclass 155][List of Patents for class 351 subclass 155]155 Subclass 155 indent level is 1 With support or holder (e.g., on hat or cap)
 [List of Pre Grant Publications for class 351 subclass 156][List of Patents for class 351 subclass 156]156 Subclass 156 indent level is 2 With head embracing bow or chain
 [List of Pre Grant Publications for class 351 subclass 157][List of Patents for class 351 subclass 157]157 Subclass 157 indent level is 2 Neck retainers
 [List of Pre Grant Publications for class 351 subclass 158][List of Patents for class 351 subclass 158]158 Subclass 158 indent level is 1 Combined
[List of Pre Grant Publications for class 351 subclass 159.01][List of Patents for class 351 subclass 159.01]159.01 Subclass 159.01 indent level is 1 Ophthalmic lenses
[List of Pre Grant Publications for class 351 subclass 159.02][List of Patents for class 351 subclass 159.02]159.02 Subclass 159.02 indent level is 2 Eye contact
[List of Pre Grant Publications for class 351 subclass 159.39][List of Patents for class 351 subclass 159.39]159.39 Subclass 159.39 indent level is 2 Electro-active
[List of Pre Grant Publications for class 351 subclass 159.41][List of Patents for class 351 subclass 159.41]159.41 Subclass 159.41 indent level is 2 Multifocal
 [List of Pre Grant Publications for class 351 subclass 159.5][List of Patents for class 351 subclass 159.5]159.5 Subclass 159.5 indent level is 2 Image size (anisekonia) correction
 [List of Pre Grant Publications for class 351 subclass 159.51][List of Patents for class 351 subclass 159.51]159.51 Subclass 159.51 indent level is 2 Lens for aphakic eye
[List of Pre Grant Publications for class 351 subclass 159.52][List of Patents for class 351 subclass 159.52]159.52 Subclass 159.52 indent level is 2 Focus or astigmatism correction
 [List of Pre Grant Publications for class 351 subclass 159.55][List of Patents for class 351 subclass 159.55]159.55 Subclass 159.55 indent level is 2 Ghosting
 [List of Pre Grant Publications for class 351 subclass 159.56][List of Patents for class 351 subclass 159.56]159.56 Subclass 159.56 indent level is 2 With polarization
 [List of Pre Grant Publications for class 351 subclass 159.57][List of Patents for class 351 subclass 159.57]159.57 Subclass 159.57 indent level is 2 With lens protective layer
[List of Pre Grant Publications for class 351 subclass 159.58][List of Patents for class 351 subclass 159.58]159.58 Subclass 159.58 indent level is 2 Prismatic
[List of Pre Grant Publications for class 351 subclass 159.6][List of Patents for class 351 subclass 159.6]159.6 Subclass 159.6 indent level is 2 With light filtering means
 [List of Pre Grant Publications for class 351 subclass 159.66][List of Patents for class 351 subclass 159.66]159.66 Subclass 159.66 indent level is 2 Having color
 [List of Pre Grant Publications for class 351 subclass 159.67][List of Patents for class 351 subclass 159.67]159.67 Subclass 159.67 indent level is 2 With beveled, polished, or reinforced edges
 [List of Pre Grant Publications for class 351 subclass 159.68][List of Patents for class 351 subclass 159.68]159.68 Subclass 159.68 indent level is 2 Fluid lens
 [List of Pre Grant Publications for class 351 subclass 159.69][List of Patents for class 351 subclass 159.69]159.69 Subclass 159.69 indent level is 2 With indicia or marking
 [List of Pre Grant Publications for class 351 subclass 159.7][List of Patents for class 351 subclass 159.7]159.7 Subclass 159.7 indent level is 2 Multiple elements
[List of Pre Grant Publications for class 351 subclass 159.71][List of Patents for class 351 subclass 159.71]159.71 Subclass 159.71 indent level is 2 Aspherical
[List of Pre Grant Publications for class 351 subclass 159.73][List of Patents for class 351 subclass 159.73]159.73 Subclass 159.73 indent level is 2 Methods
 [List of Pre Grant Publications for class 351 subclass 178][List of Patents for class 351 subclass 178]178 Subclass 178 indent level is 1 Methods (e.g., securing lenses in mountings)
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
     SPECTACLES AND EYEGLASSES (351/41)
  FOR100          Subclass FOR100 indent level is 1 Ophthalmic lenses or blanks (351/159)
  FOR101          Subclass FOR101 indent level is 2 Eye contact type (351/160R)
      FOR102          Subclass FOR102 indent level is 3 Multifocal (351/161)
      FOR103          Subclass FOR103 indent level is 3 Colored (351/162)
      FOR104          Subclass FOR104 indent level is 3 Hydrophilic (351/160H)
  FOR105          Subclass FOR105 indent level is 2 With light filtering means (351/163)
      FOR108          Subclass FOR108 indent level is 2 With lens protective layers (351/166)
      FOR109          Subclass FOR109 indent level is 2 Cataract correction type (351/167)
  FOR110          Subclass FOR110 indent level is 2 Multifocal (351/168)
      FOR111          Subclass FOR111 indent level is 3 Gradually varying focal power (351/169)
      FOR112          Subclass FOR112 indent level is 3 With prismatic segment (351/170)
      FOR113          Subclass FOR113 indent level is 3 Three or more foci (351/171)
      FOR114          Subclass FOR114 indent level is 3 Multiple elements (351/172)
      FOR115          Subclass FOR115 indent level is 2 Image size (aniseikonia) correction (351/173)
      FOR116          Subclass FOR116 indent level is 2 With beveled, polished or reinforced edges (351/174)
      FOR117          Subclass FOR117 indent level is 2 Prismatic type (351/175)
      FOR118          Subclass FOR118 indent level is 2 Focus and/or astigmatism correction (351/176)
      FOR119          Subclass FOR119 indent level is 2 Methods (351/177)

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