Tvrda gas-propusna (RGP) kontaktna sočiva Koncepcija

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Slide 2 Dizajn RGP sočiva • Glavno za optimizovanje odziva • Materijali sa visokim Dk omogućavaju dizajn koji više odgovarajući Rigid Gas Permeable Contact Lenses Design Does Design Matter Design issues can never be ignored because design can be used to optimize the ocular response both on an individual basis and for the population at large. However, as RGP material technology has advanced, RGP materials are now much more forgiving in terms of the precision and finesse of fit required. This is due partially to the generally lower rigidity of modern RGP lens materials. Da li je dizajn značajan Dizajn se nikada ne može ignorisati jer se on koristi da bi se optimizovao okularni odgovor, kako na individualnoj bazi tako na populaciju. Kako se razvijala tehnologija materijala, RGP materijali su danas mnogo više pogodniji u smislu preciznosti i finoće fitovanja koja se zahteva. To je delom posledica generalno manje tvrdoće modernih materijala za RGP sočiva.
Slide 3 RGP poželjne osobine • Optoimalan dizajnOptimal design • Materijal • visoki Dk • vlažljivost • Otpornost na depozite • stabilnost • Laki za proizvodnju Rigid Gas Permeable Contact Lenses Design Desirable Properties The desirable properties of an RGP lens are: Optimal design. Design is the cornerstone of any contact lens fitting. As materials have improved, the demands on the prescriber have lessened. However they almost certainly will never be eliminated, even when topography measuring systems are interfaced to design and manufacturing systems. Material. – Dk. The minimum requirements for daily wear (DW) and extended wear (EW) can be met by some RGP materials. – Wettability. For both optical regularity and lubricity reasons, a wettable material which will retain a regular tear film is essential for satisfactory ongoing RGP lens wear. – Deposit resistance. A deposited lens is not only potentially uncomfortable but the wettability and the regularity of the pre-lens tear film may also be adversely affected. – Stability. In the interests of maintaining the parameters of the lens, and therefore lens behaviour, the lens material must be stable. This enables it to resist changes to its chemistry and properties over time, regardless of its environment or treatment. - Ease of manufacture. Manufacturing difficulties with a particular material can be a barrier to its usage. If special handling or treatment is required, laboratories may resist using it. Alternatively, if the material is treated conventionally, an unreliable product may result.
Page 1: Slide 1 Tvrda gas-propusna (RGP) ko
Page 5 and 6: Slide 4 Poželjno fitovanje • Sre
Page 7 and 8: Slide 5 Poželjne performanse • K
Page 9 and 10: Slide 7 ISO TERMINOLOGIJA PARAMETAR
Page 11 and 12: Slide 9 Lens Parameters Rigid Gas P
Page 13 and 14: Slide 11 Dizajn sa više krivih Rig
Page 15 and 16: Slide 13 Konusni preseci Rigid Gas
Page 17 and 18: Slide 15 Asferični dizajni • Reg
Page 19 and 20: Slide 17 Dizajn zadnje površine: S
Page 21 and 22: Prilepljenost sočiva. U principu s
Page 23 and 24: Slide 20 Diagram of the Three Main
Page 25 and 26: Slide 22 Promene kornealne krivine
Page 27 and 28: Slide 24 Bearing Relation Range Bea
Page 29 and 30: Slide 26 Efekat (uticaj) BOZD na vi
Page 31 and 32: Slide 28 Zadnja površina srednja p
Page 33 and 34: Treba da se poravna sa ravnajućom
Page 35 and 36: Slide 31 Rigid Gas Permeable Contac
Page 37 and 38: Slide 33 Periferija zadnje površin
Page 39 and 40: Slide 35 Periferija zadnje površin
Page 41 and 42: Slide 37 c Znatan rezervoar Labav f
Page 43 and 44: Slide 39 Utiče na: • Komfor •
Page 45 and 46: Slide 41 RGP oblik ivice versus Kom
Page 47 and 48: Slide 43 Numerička analiza ivice R
Page 49 and 50: Slide 45 Debljina sočiva Određena
Page 51 and 52: Neki materijali pokazuju direktan o
Page 53 and 54:
Slide 48 Savijanje “na oku”vs.
Page 55 and 56:
Slide 50 Savitljivost, debljina so
Page 57 and 58:
Slide 52 Dizajn prednje površine K
Page 59 and 60:
Slide 54 Lentikulacija Utiče na:
Page 61 and 62:
Slide 56 Uglovi spojeva i debljina
Page 63 and 64:
Slide 58 Interakcija sa kapkom Rigi
Page 65 and 66:
Slide 60 Dijametar sočiva Određen
Page 67 and 68:
Slide 62 Dijametar sočiva i komfor
Page 69 and 70:
Slide 64 Centar gravitacije: Minus
Page 71 and 72:
Rukovanje. Boje su obično inkopori
Page 73 and 74:
Slide 67 Uloga proizvođača • Da
Page 75 and 76:
Slide 69 Dizajni za 2000-te • Izo
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Tvrda gas-propusna (RGP) kontaktna sočiva Koncepcija

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