1、American National Standardfor Ophthalmics Requirements for Ophthalmic FramesANSI Z80.5-2010ANSI Z80.5-2010ANSIZ80.5-2010Revision ofANSI Z80.5-2004American National Standardfor Ophthalmics Requirements forOphthalmic FramesSecretariatThe Vision CouncilApproved April 20, 2010American National Standards
2、 Institute, Inc.Approval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when, in the judgement of the ANSI Board ofStandards Review, substantial
3、 agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more thana simple majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered, and that a concerted effort be madetowards their resolution.The use of
4、American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, whether he has approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or procedures not conforming to the standards.The American National Standa
5、rds Institute does not develop standards andwill in no circumstances give an interpretation of any American NationalStandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requ
6、ests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be tak
7、en periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive current information on all standards by calling or writing the AmericanNational Standards Institute.American National StandardPublished byThe Vision Council1700 Diagonal RoadSuite 500A
8、lexandria, VA 22033Copyright 2010 by The Vision CouncilAll rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of the publisher.Printed in the United States of AmericaDeveloped byThe Accredited Comm
9、ittee Z80 for Ophthalmic Standards -The Vision CouncilZ80 Secretariat1700 Diagonal RoadSuite 500Alexandria, VA 22033iContentsPageForeword ii1 Scope and purpose 12 Normative references . 13 Glossary of terms and definitions . 24 Requirements . 165 Physical dimension and measurements. 186 Marking and
10、Stamping 19Figures1 Schematic cross section of lens bevel/eyewire 22 Pantoscopic angle 33 Set-back angle 34 Distance between lenses 55 Box method for measuring the size of ophthalmic frame fronts . 7 6 Measuring and marking of temple lengths in millimeters 107 Standard boxed lens pattern 118 Plastic
11、 frames .139 Metal frames. 1310 Combination frames . 1411 Hinges 1412 Rimless/Semi-rimless mounts 1513 Temples (sides) 1514 End piece types 1615 Marking and stamping 19Annexes A Bibliography 21B Information to be upplied with each titanium frame sold at retail 22iiForeword (This foreword is not part
12、 of American National Standard ANSI Z80.5-2010.)The Z80 Standards Committee for Ophthalmic Lenses was organized in 1956, andthe committees initial standard was issued in 1964. At the beginning of 1970, theZ80 Standards Committee was reorganized, with the Optical Society of America ser-vicing as secr
13、etariat. In 1972, the committee was authorized to broaden its scopefrom “prescription glass ophthalmic lenses“ to prescription ophthalmic lenses.“ Sub-sequently, the scope of the committee was further broadened to “ophthalmic stan-dards.“In 1970, the Z80 Committee Ophthalmic Lenses, appointed a Subc
14、ommittee on Oph-thalmic Frames to draft standard requirements for dress ophthalmic frames.The 2010 revision calls out additional frame material characteristics associated withbiocompatibility and relegates the biocompatibility of those requirements to state andfederal standards or guidelines. The 20
15、04 revision provided tighter tolerances for eyesize and shape and also updated the references to ISO standards to the newest ver-sions. The 1997 revision incorporated the boxing system of frame measurements,which has been in use in the United States since 1962, as well as the Optical IndustryAssocia
16、tions-(OMA) standard requirements for marking and stamping gold and gold-filled frames. It also dealt with flammability and impact resistance of frames.In 1982, the Optical Laboratories Association assumed the responsibilities of theSecretariat; and in 1985, the Z80 Committee became an Accredited St
17、andards Com-mittee (ASC). In 2009, The Vision Council became the Secretariat of ASC Z80. TheScope of the Z80 Committee is for the establishment of standards that shall apply toophthalmic lenses and to equipment, instruments an to processes used in the finalfabrication level which affect their perfor
18、mance; to ophthalmic frames, sunglassesand fashion eyewear; to contact devices in addition to contact lenses; and to opticalinstrumentation used in ophthalmic procedures and vision evaluation.Suggestions for improvement of this standard will be welcome. They should be sentto: The Vision Council, 170
19、0 Diagonal Road, Suite 500, Alexandria, VA 22033This standard was processed and approved for submittal to ANSI by the AccreditedStandards Committee on Ophthalmic Standards, Z80. Committee approval of thisstandard does not necessarily imply that all committee members voted for its approv-al. At the t
20、ime it approved this standard, the Z80 Committee had the following mem-bers:Thomas White, M.D., ChairmanQuido Cappelli, Vice-ChairmanRobert Rosenberg, O.D., SecretaryOrganization Represented Name of RepresentativeAdvance Medical Technologies Association Douglas FortunatoAmerican Academy of Ophthalmo
21、logy . Dr. Thomas WhiteAmerican Academy of Optometry. Dr. David LoshinAmerican Ceramic Society . Lyle RubinAmerican Glaucoma Society Dr. Steven GeddeAmerican Optometric Association Dr. Jeffrey WeaverAmerican Society of Cataract and Refractive Ophthalmology Dr. Stephen KlyceContact Lens Institute. St
22、an RogaskiContact Lens Manufacturers Association . Quido CappelliDepartment of Veterans Affairs Dr. John TownsendFederated Cornea Societies/ASCRS . Dr. Michael BelinFood SEE NOTE) EYEWIRE GROOVE ANGLE (NOT TO EXCEED 110; SEE NOTE) NOTE - Lens bevel angle shall be equal to or greater than eyewire gro
23、ove angle Figure 1 Schematic cross section of lens bevel/eyewire interface ANSI Z80.5-2010 3 Figure 2 - Pantoscopic angle Figure 3 Set-back angle angle, lens bevel: The included angle at the apex on the periphery of an edged lens (see figure 1). angle, pantoscopic (down angle): The angle formed by t
24、he front and temple with the temples in the open position, as viewed from the side of the frame. The numerical value in degrees is determined by measuring the angle between the centerline of the temple (straight line from the center of the ear bend) and a line drawn perpendicular to the vertical axi
25、s of the corresponding eye of the front (figure 2). angle, set-back: The angle formed by the front and temple with the temples in the open position as viewed from the top. The numerical value in degrees is determined by measuring the angle between the centerline of the temple and a line perpendicula
26、r to the horizontal line joining the centers of the hinge barrel holes; also called temple outset (see figure 3). angle, temple fold: The angle formed between the temples, in folded position, and the horizontal line joining the hinge centers, as viewed from the back of the frame; also called cross a
27、ngle. ANSI Z80.5-2010 4 aperture: The opening in an ophthalmic front into which the lens is inserted. Aperture dimensions (in millimeters) do not include the depth of the lens groove. area, end piece: The portion of a front where a temple and front normally are joined; also called end piece. (see fi
28、gure 14) barrel: May be either of the following: - The component of a hinge that interlocks with the mating component of the hinge set; - A threaded closure device attached to a metal eyewire (this device is also known as eyewire tube or rimlock). barrel, split-joint: See tube. bbl: Abbreviation for
29、 barrel. bend, down: The drop or downward bend of the tip end of a temple (earpiece) to fit over and around the ear; also known as ear bend. bend, ear: See bend, down. bend, head: See curve, temple head. bend, mastoid: The curvature in the down bend of the temple (earpiece) adapting to the mastoid c
30、urvature (depression) behind the ear. bevel, lens: The periphery of an edged lens having an angular cross section (see figure 1). bow, head: See curve, temple head. bridge: The supportive structural member connecting the two eyewires of an ophthalmic front. bridge, brace: May be either of the follow
31、ing: - A plastic front with metal imbedded to reinforce the bridge area; - A metal front with an extra member for styling purposes or reinforcement, or both, used to improve alignment retention. bridge, keyhole: A bridge design for a front that does not permit continuous contact between the nose and
32、 the front in the nasal crest area (see figures 8 and 9). ANSI Z80.5-2010 5 NOTE - Distance between lenses refers to the minimum distance between the lenses, measured on the horizontal between the vertical tangents to the apices of the lens bevels on the nasal side. This dimension is also the bridge
33、 size in the boxing system (see figure 5). Figure 4 - Distance between lenses (DBL) bridge, saddle: A bridge design for the front that permits continuous contact between the nose and the front in the nasal crest area (see figures 8 and 9). bridge inset: A condition where the bridge fitting surface i
34、s located behind the plane of the lenses (nearer the face). bridge on plane: A condition where the bridge fitting surface is located on the same plane as the lenses. bridge outset: A condition where the bridge fitting surface is located in front of the plane of the lenses (further from the face). br
35、idge size: The shortest horizontal distance between lenses (DBL), measured in millimeters (see figure 4). center, geometric: The intersection of the horizontal and vertical centerlines of a box that circumscribes the lens shape (see figure 5(a). chassis: The metal eyewire and bridge components of a
36、combination front that holds the lenses. core: May be either of the following: (1) A central strand around which other wires are wound in a cable temple (see figures 6 and 13); (2) Wire reinforcement imbedded in plastic temples (core wire). curve, temple head: A curve in a temple (earpiece) to confo
37、rm to the contour of the human head; also called head bend or head bow. DBC: Abbreviation for distance between centers. DBL: Abbreviation for distance between lenses. diameter, effective: A linear measurement expressed in millimeters, equal to twice the longest radius of an ophthalmic lens measured
38、from its geometric center to the apex of its edge (see figure 5(b). ANSI Z80.5-2010 6 diameter, thread: The overall outside diameter of a screw thread measured across thread peaks. distance, frame center: See distance between centers. distance, interpupillary: The linear distance between the fixatio
39、n axes of the wearers two eyes, commonly referred to as the distance between the centers of the pupillary openings. distance between centers: The horizontal linear distance between geometric centers of the apertures (eyewires) of the front; also called frame center distance (see figure 5(c). distanc
40、e between lenses: (DBL) The minimum horizontal distance between lenses, as measured at the apex of their bevels (see figure 4) ANSI Z80.5-2010 7 NOTES (1) Front dimensions correspond to the actual sizes and locations of the finished lenses as defined herein. All dimensions of the box method are in m
41、illimeters. (2) All measurements, except distance between centers (DBC), sometimes referred to as geometrical center distance (GCD), are taken from the apex of the lens bevel (3) “A“ is the horizontal distance between the vertical tangents to the lens bevel apex. (4) “B“ is the vertical distance bet
42、ween the horizontal tangents to the lens bevel apex. (5) The eyesize of a front corresponds to the “A“ and “B“ dimensions of the lens. It may be expressed in the following forms: Form Examples The “A“ dimension only 46 or 46 The “A” and “B“ dimensions 46x38 A combination of the above 46 (46 x 38) (6
43、) Eyesize “difference“ is the numerical difference between the “A“ and “B“ dimensions. It is constant for all sizes generated from the same pattern. (7) Effective diameter (ED) is twice the longest radius from the geometric center of a lens to the apex of the edge. Its meridian is specified by degre
44、es of angle (X) from the horizontal lens centerline for the right eye, measured counterclockwise from the zero degree position as viewed by the observer (8) Right eye angle X is illustrated, Left eye angle = 180 - right eye angle. (9) Distance between centers (DBC) refers to the horizontal distance
45、between the geometric centers of the eyewires of a front. It is also known as “frame center distance“ and “frame PD “ The “A“ dimension of one eye plus DBL always equals distance between centers (DBC) in the box system. Figure 5 Box method for measuring the size of ophthalmic frame fronts ANSI Z80.5
46、-2010 8 endpiece: See area, endpiece. eyeglasses: A term commonly used to describe an ophthalmic frame with lenses inserted. eye size: See lens size. eye size difference: See lens difference. eyewire: The component of an ophthalmic frame front encircling one lens. eyewire, left: The eyewire in front
47、 of the wearers left eye, as worn. eyewire, right: The eyewire in front of the wearers right eye, as worn. face form: The curve in a front that follows the contours of a human face, as viewed from above. flammability: The ability to support combustion. focimeter (lensometer): An instrument for deter
48、mining vertex power, axis location, optical center, and major reference point location and prism power at a given point on an ophthalmic lens. former: A cam or template for defining a lens shape (see figure 7). frame (ophthalmic or spectacle): A device for holding ophthalmic lenses in proper positio
49、n on the head in front of the eyes. A frame typically consists of a front that holds the lenses and a pair of temples (earpieces) to secure the unit to the head. frame, combination: A frame that consists of both metal and plastic major components (see figure 10) frame, gold filled: An ophthalmic frame constructed primarily of gold-clad metal. The karat gold layer must be at least 1/20th by weight of the total metal frame, metal: An ophthalmic frame constructed primarily of metallic elements (see figure 9) frame, plastic: An ophthalmic frame constructed primarily o
