Spectacle

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SPECTACLE PARTS

MADE BY : SWATI PANARAFROM : BHARTIMAIYA COLLEGE

OF OPTOMETRY2nd YEAR 3rd SEMESTER

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SPECTACLE

• SPECTACLE IS AN OPTICAL APPLIANCE COMPRISING A LENSES AND A FRAME WITH SIDES EXTENDING TOWARDS THE EARS.

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SPECTACLE

FRAMEEYE GLASSES

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EYE GLASSES

• THESE OPTICAL APPLIANCE COMPRISING A LENSES AND A FRAME HAVING NO SIDE.

• EYE GLASSES WERE USED IN THE PART AND HAVE BEEN REPLACE IN SPECTACLE.

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FRAME

• THE PORTION OF SPECTACLE WHICH HOLDS THE LENSES CONTAINING THE OPHTHALMIC PRESCRIPTION IN THEIR PROPER POSITION IN FRONT OF THE EYES.

• THERE ARE TWO PART IN FRAME:• (1)FRAME FRONT• (2)TEMPLES

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FRAME

TEMPLEFRAME FRONT

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FRAME FRONT• HINGES

• NOSE PAD• GUARD ARM

RIM LUGS

BRIDGEEND PIECE

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FRAME FRONTS- RIMS BRIDGE JOINTS AND LUGS LENSES END PIECE HINGES NOSE PADS

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RIM

• The rim going around the lenses is known as the eyewire or rim

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RIM

FULL FRAME

SEMI RIMLESS

RIMLESS

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FULL FRAME

SEMI RIM LESS

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RIM LESS(three piece)

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SEMIRIMLESS

SUPRA FRAMESINFRA SUPRA FRAMES

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SUPRA FRAMES

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INFRA SUPRA FRAMES

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BRIDGE

• That area of the frame front between the lenses that rests on the nose is the bridge.

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REGULAR BRIDGE

INSERT BRIDGE

SADDLE BRIDGE

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REGULAR BRIDGE

RESTS ON NOSE WITH FULL SUPPORT.

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INSERT BRIDGE IT PROTECTS BEHIND THE FRAME

PLANE ,SO THAT THE AREA OF CONTACT LIES BEHIND THE LENS SPACE.

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SADDLE BRIDGE- COMBINATION OF REGULAR AND

INSERT BRIDGE.

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OTHER CLASSIFICATION ACCORDING TO MATERIAL .

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PLASTIC BRIDGE

SADDLE BRIDGE

KEY HOLE BRIDGE

MODIFIED SADDLE BRIDHE

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SADDLE BRIDGE

• The saddle bridge is shaped like a saddle in a smooth curve and follows the bridge of the nose.

• This spreads the weight of the frame evenly over the sides and crest of the nose.

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MODIFIED SADDLE BRIDGE

• In the modified saddle, the bridge area looks much the same as the saddle bridge does when viewed from the Front.

• The difference is that there are nose pads that are part of the back of the bridge.

• These pads help to carry some of the weight of the frame.

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KEYHOLE BRIDGE

• The keyhole bridge is shaped like an old-fashioned keyhole.

• At the top, the bridge flares out slightly. • The bridge rests on the sides of the nose, but

not on the rest.

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METAL BRIDGE

COMFORT

METAL SADDLE BRIDGE

PAD BRIDGE

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PAD BRIDGE

• The bridge commonly used in metal frames is the pad bridge.

• In the pad bridge, nose pads are attached to the frame by metal pad arms.

• In this case, the pads alone support the weight of the glasses.

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PAD BRIDGE

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COMFORT BRIDGE

• When a metal frame is equipped with a clear plastic saddle-type bridge, the bridge type is referred to as a comfort bridge.

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METAL SADDLE BRIDGE

• Metal and rimless frames were, and sometimes still are, constructed with a metal saddle bridge and enjoyed widespread use for a period of history.

• It may yet appear exactly as before or decoratively in conjunction with nose pads.

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HINGES

• The hinges hold the temples to the front, and consist of an odd number of interfitting barrels, the total number being three, five, or seven.

• Hinges may vary in construction , but for simplicity are usually classified by the total number of barrels they have when assembled, such as a three-barrel hinge.

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LUGSThey are projection on the sides

to which the side piece are attached.

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END PIECE

• The outer areas of the frame front, to the extreme left and right where the temples attach, are known as the end pieces.

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ENDPIECE

PLASTIC METAL

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PLASTIC ENDPIECE

BUTT

MIRE

TURN BACK

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BUTT

• the front is straight and the temple butt is fl at, and both meet at a 90-degree angle.

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MAKES AN ANGLE OF 90 DEGREE.

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MITRE

• The mitre end piece causes the frame front contact area and temple butt to meet at a 45-degree angle.

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MAKES AN ANGLE OF 45 DEGREE.

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TURN BACK

• In the turn-back type, the frame front bends around and meets the temple end to end.

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BENDS AROUND AND MEEETS THE TEMPLE END TO END.

MOST COMMONLY USED.

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METAL

TURN BACK WRAP

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TURN BACK

• The traditional metal end piece has a construction similar to the turn-back end piece of the plastic frame.

• There are now a wide variety of metal endpiece designs

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WRAP

• End pieces are also noticeable by their absence.

• Instead of an end piece, some frame fronts and temples are made as one continuous piece.

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NOSE PADSMostly frame have nose pads ,

which are plastic piece that rest on the nose to support the frame.

It also directly attached to the frame.

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NOSE PAD

LOOSE NOSE PADFIXED NOSE PAD

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GUARD ARM

• Some frames have nose pads, which are plastic pieces that rest on the nose to support the frame.

• These may be directly attached to the frame or to connecting metal pieces known as guard arms or pad arms.

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Guard arm

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TEMPLE

• TEMPLE – THEY ATTACH TO THE FRONT AND HOOK OVER THE EARS TO HELP HOLD THE SPECTACLES IN PLACE.

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PORTION-

BUTT

SHAFT OR

SHANK

BENDEAR PIECE

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The portion of the temple that attached to the frame front is known as the butt portion or butt end.

The place on a temple where is first bends down to go over the ears is called Bend.

The portion in temple between the butt portion and bend portion is called shank or shaft.

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The portion beyond the bend and behind the ear is known as the ear piece or curl.

The spring system is also pressent in the butt portion.

Steel wire pressent in temple.

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TYES OF TEMPLE

SKULL LIBRARY

CONVERTIBLE

RIDING BOW

COMFORT CABLE

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SKULL TEMPLE

• Skull temples bend down behind the ear and follow the contour of the skull, resting evenly against it.

• The bent-down portion is narrower at the top of the ear and widens toward the end.

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RIDING BOW TEMPLE

• Riding bow temples curve around the ear, following the crotch of the ear where the ear and the head

• meet and extend to the level of the earlobe. They are sometimes used in children’s and safety frames.

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LIBRARY TEMPLE

• Library temples usually begin with an average width at the butt and increase in width posteriorly.

• They are practically straight and hold the glasses on primarily by pressure against the side of the head.

• They are also known as straight-back temples.

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CONVERTIBLE TEMPLE

• Convertible temples were originally designed so they could be bent down to take on the form of skull temples, and “converted” from the straight-back to the skull design.

• Because this temple is versatile and can be made to fit people with a variety of temple length requirements, it is commonly used.

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• However, it now comes already bent down for a certain temple Fit.

• If the bend is in the wrong location, the temple may be easily straightened out and then re-bent to fit the wearer.

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COMFORT CABLE

• Comfort cable temples are shaped the same as riding bow temples, but are of metal construction with the curl, or behind the ear portion, constructed from a flexible coiled cable.

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•THANK YOU