New Reading Progressive

1. New Reading Progressive

2. LARGO New reading wide vision lens ロゴ

3. New reading progressive LARGO Technical Issue

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

5. Accommodation YOMIURI May-200

6. Accommodation Accommodation Reading Distance (D) (cm) Age

7. 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

8. Middle years & Glasses Reading WV Combined use Substitute Use reading WV Burden on near Narrow near vision Not clear view in middle vision Can not see at near vision

9. Middle years & Glasses Desk work area Deeply clear vision Wide clear near vision LARGO Needs of reading specialized glasses Desk work + α LARGO SV for near PAL

10. Product concept Desk work distance Accommodation of Middle years 2.50 to 1.25D 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 Needed accommodation = 2.8D Additional power = 1.00 D or 1.50D Ordering with Near power

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

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

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

14. Design Aberration Largo Progressive

15. Design Aberration 9mm Largo Progressive

16. 40degrees Eye sight 9mm 20degrees 20degrees 31degrees 15mm Progressive

17. Design -1.50 -1.00 Corridor 56% change at Far EP 10mm 19mm 9mm 31% change at G.C. 0.00 ①Corridor 19mm…9mm below from Far EP is entrance of near vision ②Inset 2mm…Basic layout method is based on Far PD

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

19. Comparison (Diopter ) Distance of measurement point 22mm Corridor 20mm Distance 24mm H LARGO N

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

21. Comparison (Distortion) Wide middle zone Reducing Norse side distortion (ODN) Same as ordinary progressive Big difference between Ear and Norse Ear Norse H LARGO N

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

23. Type comparison ◆RX ADD needs accommodation 3.50 for near vision

24. Type comparison ◆Farthest distance of Single vision

25. Type comparison ◆Farthest distance of LARGO

26. Type comparison ◆Farthest distance of LARGO

27. Comparison (Clear vision) 40cm 200cm Emmetropia / Accommodation 2.00D / RX +1.50D 0.5D Depth of up and down 29cm 67cm 1.5D Depth of right and left Single vision LARGO TYPE 1

28. Type comparison ◆Farthest distance of LARGO

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

30. Type comparison ◆Accommodation 2.00D~1.25D TYPEⅠ

31. Type comparison ◆Accommodation equal or less than 1.00D TYPEⅡ

32. Type comparison ◆Choose SV TYPEⅠ(-1.00D) TYPEⅡ(-1.50D)

33. Type comparison ◆Choose SV TYPEⅠ(-1.00D) TYPEⅡ(-1.50D)

34. Type comparison ◆Choose SV TYPEⅠ(-1.00D) TYPEⅡ(-1.50D)

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

36. LARGO New reading wide vision lens ロゴ