New Reading Progressive

New reading wide vision lens ロゴ LARGO

New reading progressive LARGO Technical Issue

Target Middle years (50‘s) ･ Business scene ･ Active Private life ･ Heavy PC User

Accommodation YOMIURI May-200

Accommodation Reading Distance AgeAccommodation (cm) (D)

Accommodation Target = Middle years (50’s) ◆ Business & Active private ◆ Heavy PC user on business & private ◎ Gap between body and mind ◎ High consciousness of health Accommodation Reading distance Age

GlassesDissatisfied ① SV for Far 近業に負担を感じる ② PAL 近業での視野が狭い ③ SV for Near 少し遠くの文字が よく見えない ④ No use 近くを見るときに ピントが合わない Substitute Use reading WV Combined use Reading WV Burden on near Narrow near vision Not clear view in middle vision Can not see at near vision Middle years & Glasses

LARGO Needs of reading specialized glasses Desk work + α LARGO Deeply clear vision Wide clear near vision SV for near PAL Desk work area

Product concept Desk work lens for middle years Deeply clear vision ← Own accommodation + Addition Wide clear vision ← Ideal corridor length + Minimized ADD Seated working distance = 25 ~85cm Additional power = 1.00 D or 1.50D Needed accommodation = 2.8D Ordering with Near power Accommodation of Middle years 2.50 to 1.25D Desk work distance

Design concept ・ Reducing aberration at top & bottom ② Age (Accommodation) ・ Purpose Type Ⅰ Type Ⅱ (-1.00D)(-1.50D) ③ Asymmetric design R & L ・ Keep a clear vision at corridor as Square ① Square design

Design concept Near power Vertical power changing Near power –1.0 D 9mm Fitting point Less distortion than SV Less than Near power

Square design LARGO Theta design Readers Distribution of aberration Ordinary progressive Wide clear near vision Wide & deeply clear near vision

Design Aberration LargoProgressive

9mm Design Aberration LargoProgressive

9mm 20 degrees 40 degrees 15mm 31 degrees Progressive Eye sight

Design ① Corridor 19mm…9mm below from Far EP is entrance of near vision ② Inset 2mm…Basic layout method is based on Far PD 56% change at Far EP 31% change at G.C mm 9mm Corridor 19mm

Design Diameter requirement --Geometric center Slice------Far eye point PD Far PD Paint Three digits Hidden mark ・ Material CX(1.50) HX(1.60/42) ・ Design 10(TYPE Ⅰ ) 15(TYPE Ⅱ ) Measurement point Near power ----A Prism power----B Depth power----C A B C

Comparison (Diopter ) Distance24mm LARGON H Corridor20mm Distance of measurement point 22mm

LARGO Real distance 22mm H Near power Real distance 25mm Depth power LARGO Comparison (Diopter )

Comparison (Distortion) LARGON H Reducing Norse side distortion (ODN) Same as ordinary progressive Big difference between Ear and Norse Wide middle zone NorseEar

Adjust whole around distortion Almost same distortion even 3mm shorten corridor LARGON H Comparison (Distortion) Same as ordinary progressive Big difference between Ear and Norse

Type comparison Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 2.25D1.25D 2.00D1.50D 1.75D 1.50D2.00D 1.25D2.25D 1.00D2.50D 0.75D2.75D ◆ RX ADD needs accommodation 3.50 for near vision

◆ Farthest distance of Single vision Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cm 2.25D1.25D 80cm 2.00D1.50D 67cm 1.75D 57cm 1.50D2.00D 50cm 1.25D2.25D 44cm 1.00D2.50D 40cm 0.75D2.75D 36cm Type comparison

◆ Farthest distance of LARGO Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cminfinity 2.25D1.25D 80cm400cm 2.00D1.50D 67cm200cminfinity 1.75D 57cm133cm400cm 1.50D2.00D 50cm100cm200cm 1.25D2.25D 44cm80cm133cm 1.00D2.50D 40cm67cm100cm 0.75D2.75D 36cm57cm80cm Type comparison

◆ Farthest distance of LARGO Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cminfinity 2.25D1.25D 80cm400cm 2.00D1.50D 67cm200cminfinity 1.75D 57cm133cm400cm 1.50D2.00D 50cm100cm200cm 1.25D2.25D 44cm80cm133cm 1.00D2.50D 40cm67cm100cm 0.75D2.75D 36cm57cm80cm Type comparison

Comparison (Clear vision) Emmetropia / Accommodation 2.00D / RX +1.50D 29cm67cm 40cm200cm Single vision LARGO TYPE 1 Depth of up and down Depth of right and left 1.5D 0.5D

◆ Farthest distance of LARGO Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cminfinity 2.25D1.25D 80cm400cm 2.00D1.50D 67cm200cminfinity 1.75D 57cm133cm400cm 1.50D2.00D 50cm100cm200cm 1.25D2.25D 44cm80cm133cm 1.00D2.50D 40cm67cm100cm 0.75D2.75D 36cm57cm80cm Type comparison

29cm Emmetropia / Accommodation 1.25D / RX +2.25D 44cm SV 80cm -1.00D 1 133cm -1.50D 2 Type comparison

◆ Accommodation 2.00D~1.25D TYPE Ⅰ Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cminfinity 2.25D1.25D 80cm400cm 2.00D1.50D 67cm200cminfinity 1.75D 57cm133cm400cm 1.50D2.00D 50cm100cm200cm 1.25D2.25D 44cm80cm133cm 1.00D2.50D 40cm67cm100cm 0.75D2.75D 36cm57cm80cm Type comparison

◆ Accommodation equal or less than 1.00D TYPE Ⅱ Accommo dation RX ADD SV Farthest distance LARGO Farthest distance -1.00D-1.50D 2.50D1.00D 100cminfinity 2.25D1.25D 80cm400cm 2.00D1.50D 67cm200cminfinity 1.75D 57cm133cm400cm 1.50D2.00D 50cm100cm200cm 1.25D2.25D 44cm80cm133cm 1.00D2.50D 40cm67cm100cm 0.75D2.75D 36cm57cm80cm Type comparison

Acco mmod ation RX SV distance BookPCNews paper TableTVIn room LARGO distance 29 cm 60 cm 85 cm 120 cm 200 cm 300cm-1.00D-1.50D 2.50D1.00D100cm infinity 2.25D1.25D80cm400cm 2.00D1.50D67cm200cm infinity 1.75D 57cm133cm400cm 1.50D2.00D50cm100cm200cm 1.25D2.25D44cm80cm133cm 1.00D2.50D40cm67cm100cm 0.75D2.75D36cm57cm80cm ◆ ChooseSVTYPE Ⅰ (-1.00D)TYPE Ⅱ (-1.50D)

Type comparison Acco mmod ation RX SV distance BookPCNews paper TableTVIn room LARGO distance 29 cm 60 cm 85 cm 120 cm 200 cm 300cm-1.00D-1.50D 2.50D1.00D100cmSV infinity 2.25D1.25D80cm SV 1 400cm 2.00D1.50D67cm1200cm infinity 1.75D 57cm1133cm400cm 1.50D2.00D50cm1100cm200cm 1.25D2.25D44cm180cm133cm 1.00D2.50D40cm1 267cm100cm 0.75D2.75D36cm257cm80cm ◆ ChooseSVTYPE Ⅰ (-1.00D)TYPE Ⅱ (-1.50D)

Type comparison Acco mmod ation RX SV distance BookPCNews paper TableTVIn room LARGO distance 29 cm 60 cm 85 cm 120 cm 200 cm 300cm-1.00D-1.50D 2.50D1.00D100cmSV SV 1111 infinity 2.25D1.25D80cmSV SV cm 2.00D1.50D67cmSV cm infinity 1.75D 57cmSV cm400cm 1.50D2.00D50cmSV cm200cm 1.25D2.25D44cmSV12280cm133cm 1.00D2.50D40cmSV cm100cm 0.75D2.75D36cmSV 12257cm80cm ◆ ChooseSVTYPE Ⅰ (-1.00D)TYPE Ⅱ (-1.50D)

Characteristics of LARGO Reduced floating feeling and distortion Wide & deep clear vision combining wearer’s accommodation and two types addition LARGO is thinner, lighter and less distortion. (only the case of positive lens) Ordering near power, fitting at Far PD

New reading wide vision lens ロゴ LARGO