Contactlens Kliniek
OPTOMETRIE JAAR 3
GOO-3.OPZ.22
,Inhoud
Contactlens aanmeting stappen.............................................................................................................3
Onderzoeken......................................................................................................................................3
Lensberekeningen...............................................................................................................................3
Lenspassing Beoordeling zachte lens..................................................................................................4
Beoordeling harde lens...................................................................................................................5
Fluobeeld beoordeling........................................................................................................................6
Notatie lenspassing.........................................................................................................................6
Lens aanpassen...................................................................................................................................7
Contactlens controle...............................................................................................................................8
Overrefractie.......................................................................................................................................8
Spleetlamp..........................................................................................................................................9
Hydrogel en Siliconen Hydrogel............................................................................................................10
Hydrogel contactlenzen................................................................................................................10
Silicone hydrogel contactlenzen....................................................................................................11
Cornea topografie.................................................................................................................................11
Soorten topografen..........................................................................................................................11
Onderzoek........................................................................................................................................11
Interpretatie.....................................................................................................................................12
Axiaal / sagittaal............................................................................................................................13
Tagentiaal / meridional.................................................................................................................13
Absoluut / standard......................................................................................................................14
Relatief / normalized....................................................................................................................14
Difference map.............................................................................................................................14
Elevation map / hoogte kaart.......................................................................................................15
Beperking van corneatopograaf........................................................................................................15
Ortho-keratologie.................................................................................................................................15
Reverse geometry (RG).....................................................................................................................16
Patiënt selectie.................................................................................................................................16
Aanpassen van de lens......................................................................................................................17
Controle............................................................................................................................................18
Lenspassing.......................................................................................................................................18
Infectie risico....................................................................................................................................20
Productgroepen voor het verzorgen van een vormstabiele lens..........................................................20
Fabrikanten toets....................................................................................................................................0
,Cooper Vision.....................................................................................................................................0
Reinigingsproducten.......................................................................................................................0
Dag lenzen......................................................................................................................................1
Maandlenzen..................................................................................................................................6
Harde lenzen.................................................................................................................................14
Bausch & Lomb.................................................................................................................................17
Reinigingsproducten.....................................................................................................................17
Dag lenzen....................................................................................................................................17
Maand lenzen...............................................................................................................................20
Johnson & Johnson...........................................................................................................................25
Daglenzen.....................................................................................................................................26
Twee weekse lenzen.....................................................................................................................29
Maandlenzen................................................................................................................................31
Alcon.................................................................................................................................................32
Reinigingsproducten.....................................................................................................................33
Daglenzen.....................................................................................................................................33
Maandlenzen................................................................................................................................37
Menicom..........................................................................................................................................41
Daglenzen.....................................................................................................................................43
Twee weekse lenzen.....................................................................................................................45
Maandlenzen................................................................................................................................46
Zachte maatwerk..........................................................................................................................48
Harde lenzen.................................................................................................................................52
Opthecs / Microlens.........................................................................................................................55
Maandlenzen................................................................................................................................56
Maatwerk 3-6 maandenlenzen.....................................................................................................57
Harde lenzen.................................................................................................................................63
, Contactlens aanmeting stappen
Onderzoeken
Refractie
Spleetlamp routine
Ooglid omklappen
Extra parameters
o Cornea diameter
o Pupilgrootte
o Cornea/sclera overgang
o Lidspleet grootte
o Traanminiscus
o BUT
Cornea topografie / keratometrie
Inzetten paslens en passing beoordelen
Lensberekeningen
Stap 1
Berekenen de cornea cilinder bij harde lenzen.
Cornea cilinder = K-waarde horizontaal – k waarde verticaal x 0,25
0,05
Let op gebruik geen + of – in de formule
Stap 2
Bereken de hoornvliesafstand naar 0 bij een hoge sterkte (> -/+ 4).
f bril = 1
F bril
f lens = f bril – HA
F lens = 1
f bril
Stap 3
Noteer de refractiecilinder.
Stap 4
Bereken de restcilinder.
Restcilinder vormstabiele lens = corneacilinder – refractiecilinder
Restcilinder zachte lens = refractiecilinder
Stap 5
Bereken de sferische waarde restcilinder.
Sferische waarde restcilinder = corneacilinder – refractie cilinder
2
OPTOMETRIE JAAR 3
GOO-3.OPZ.22
,Inhoud
Contactlens aanmeting stappen.............................................................................................................3
Onderzoeken......................................................................................................................................3
Lensberekeningen...............................................................................................................................3
Lenspassing Beoordeling zachte lens..................................................................................................4
Beoordeling harde lens...................................................................................................................5
Fluobeeld beoordeling........................................................................................................................6
Notatie lenspassing.........................................................................................................................6
Lens aanpassen...................................................................................................................................7
Contactlens controle...............................................................................................................................8
Overrefractie.......................................................................................................................................8
Spleetlamp..........................................................................................................................................9
Hydrogel en Siliconen Hydrogel............................................................................................................10
Hydrogel contactlenzen................................................................................................................10
Silicone hydrogel contactlenzen....................................................................................................11
Cornea topografie.................................................................................................................................11
Soorten topografen..........................................................................................................................11
Onderzoek........................................................................................................................................11
Interpretatie.....................................................................................................................................12
Axiaal / sagittaal............................................................................................................................13
Tagentiaal / meridional.................................................................................................................13
Absoluut / standard......................................................................................................................14
Relatief / normalized....................................................................................................................14
Difference map.............................................................................................................................14
Elevation map / hoogte kaart.......................................................................................................15
Beperking van corneatopograaf........................................................................................................15
Ortho-keratologie.................................................................................................................................15
Reverse geometry (RG).....................................................................................................................16
Patiënt selectie.................................................................................................................................16
Aanpassen van de lens......................................................................................................................17
Controle............................................................................................................................................18
Lenspassing.......................................................................................................................................18
Infectie risico....................................................................................................................................20
Productgroepen voor het verzorgen van een vormstabiele lens..........................................................20
Fabrikanten toets....................................................................................................................................0
,Cooper Vision.....................................................................................................................................0
Reinigingsproducten.......................................................................................................................0
Dag lenzen......................................................................................................................................1
Maandlenzen..................................................................................................................................6
Harde lenzen.................................................................................................................................14
Bausch & Lomb.................................................................................................................................17
Reinigingsproducten.....................................................................................................................17
Dag lenzen....................................................................................................................................17
Maand lenzen...............................................................................................................................20
Johnson & Johnson...........................................................................................................................25
Daglenzen.....................................................................................................................................26
Twee weekse lenzen.....................................................................................................................29
Maandlenzen................................................................................................................................31
Alcon.................................................................................................................................................32
Reinigingsproducten.....................................................................................................................33
Daglenzen.....................................................................................................................................33
Maandlenzen................................................................................................................................37
Menicom..........................................................................................................................................41
Daglenzen.....................................................................................................................................43
Twee weekse lenzen.....................................................................................................................45
Maandlenzen................................................................................................................................46
Zachte maatwerk..........................................................................................................................48
Harde lenzen.................................................................................................................................52
Opthecs / Microlens.........................................................................................................................55
Maandlenzen................................................................................................................................56
Maatwerk 3-6 maandenlenzen.....................................................................................................57
Harde lenzen.................................................................................................................................63
, Contactlens aanmeting stappen
Onderzoeken
Refractie
Spleetlamp routine
Ooglid omklappen
Extra parameters
o Cornea diameter
o Pupilgrootte
o Cornea/sclera overgang
o Lidspleet grootte
o Traanminiscus
o BUT
Cornea topografie / keratometrie
Inzetten paslens en passing beoordelen
Lensberekeningen
Stap 1
Berekenen de cornea cilinder bij harde lenzen.
Cornea cilinder = K-waarde horizontaal – k waarde verticaal x 0,25
0,05
Let op gebruik geen + of – in de formule
Stap 2
Bereken de hoornvliesafstand naar 0 bij een hoge sterkte (> -/+ 4).
f bril = 1
F bril
f lens = f bril – HA
F lens = 1
f bril
Stap 3
Noteer de refractiecilinder.
Stap 4
Bereken de restcilinder.
Restcilinder vormstabiele lens = corneacilinder – refractiecilinder
Restcilinder zachte lens = refractiecilinder
Stap 5
Bereken de sferische waarde restcilinder.
Sferische waarde restcilinder = corneacilinder – refractie cilinder
2
