Below are lens constants for popular IOLs to be used with the Hill-RBF calculator. If optimized lens constants are not available, these should be considered as only a starting point. In general, the typical SRK/T A-constant used for an IOL would be what you would use for the Hill-RBF calculator. Ideally, outcomes should be carefully monitored and lens constants adjusted as needed (up or down) by no more than 0.1 every 10 cases. As new IOLs are introduced, this listing will be updated. Suggestions are welcome and can be sent to:
| Alcon | IOL Model | A-constant |
|---|---|---|
| Alcon | MTA2UO - MTA6UO | 115.54 |
| Alcon | AcrySof MA30AC | 118.74 |
| Alcon | AcrySof MA60AC / MN60AC | 118.74 |
| Alcon | AcrySof SA60AT / SN60AT | 118.74 |
| Alcon | AcrySof AU0T00 Pre-loaded UltraSert | 119.02 |
| Alcon | AcrySof SA60WF / SN60WF | 119.02 |
| Alcon | AcrySof SN6CWS Pre-loaded AcrySert | 119.02 |
| Alcon | ReSTOR SN6AD1 +3.00 add | 119.04 |
| Alcon | ReSTOR SN6AD3 +4.00 add | 119.04 |
| Alcon | AcrySof MA50BM | 119.10 |
| Alcon | AcrySof MA60MA / MN60MA Extended Range | 119.10 |
| Alcon | Vivity DF015 / DAT015 | 119.16 |
| Alcon | ReSTOR MN6AD1 3-piece +3.00 add | 119.18 |
| Alcon | Clareon CNW0Tx Toric | 119.20 |
| Alcon | Clareon CNWTT0 PanOptix / CNWTTx PanOptix Toric | 119.20 |
| Alcon | IQ Toric SN6ATx (T2 - T9) | 119.20 |
| Alcon | PanOptix TFNT00 Trifocal / TFNTxx Trifocal Toric | 119.21 |
| Alcon | Clareon CNWET0 / CCWET0 Vivity | 119.24 |
| Alcon | Clareon CNWETx Vivity Toric | 119.24 |
| Alcon | Clareon PXYWT0 PanOptic Pro / PXYWTx PanOptic Pro Toric | 119.26 |
| Alcon | Clareon CNA0T0 AutonoMe | 119.26 |
| Alcon | Clareon SY60WF | 119.26 |
| Alcon | ReSTOR SV25T0 +2.50 add | 119.50 |
| AMO - Johnson & Johnson | IOL Model | A-constant |
| AMO - Johnson & Johnson | AR40 series (M, E, e) | 118.70 |
| AMO - Johnson & Johnson | Tecnis Z9002 | 118.72 |
| AMO - Johnson & Johnson | Tecnis ZA9003 | 119.10 |
| AMO - Johnson & Johnson | Tecnis ZCB00 / Tecnis PCB00 Pre-loaded | 119.34 |
| AMO - Johnson & Johnson | Tecnis Toric (ZCT150 - ZCT600) | 119.34 |
| AMO - Johnson & Johnson | Symfony ZXR00 | 119.34 |
| AMO - Johnson & Johnson | Symfony Toric (ZXT100 - ZXT375) | 119.34 |
| AMO - Johnson & Johnson | Tecnis Multifocal ZKB00 +2.75 add | 119.42 |
| AMO - Johnson & Johnson | Tecnis Multifocal ZLB00 +3.25 add | 119.42 |
| AMO - Johnson & Johnson | Tecnis 3-piece Multifocal ZMA00 +4.00 add | 119.42 |
| AMO - Johnson & Johnson | Tecnis Multifocal ZMB00 +4.00 add | 119.42 |
| Bausch & Lomb | IOL Model | A-constant |
| Bausch & Lomb | L122UV / S122UV | 116.14 |
| Bausch & Lomb | LuxSmart EDoF | 118.38 |
| Bausch & Lomb | L161AO | 118.58 |
| Bausch & Lomb | Trulign Toric | 119.00 |
| Bausch & Lomb | Crystalens AT50 | 119.00 |
| Bausch & Lomb | Crystalens AO / Crystalens HD | 119.10 |
| Bausch & Lomb | enVista MX60 / enVista MX60T toric | 119.20 | Bausch & Lomb | enVista MX60E | 119.20 |
| Bausch & Lomb | Crystalens AT52 | 119.28 |
| Bausch & Lomb | enVista Envy ENUxxxx | 119.44 |
| Biotech | IOL Model | A-constant |
| Biotech | Eyecryl Toric | 118.99 |
| EyeBright Medical Technology | IOL Model | A-constant |
| EyeBright | A1-UV | 118.91 |
| Hoya | IOL Model | A-constant |
| Hoya | AF-1 Nanex NY1-SP | 119.14 |
| Hoya | ezSERT 255-E / 254-E | 118.61 |
| Hoya | iSert 250 / iSert 251 | 118.61 |
| Hoya | Vivinex multiSert XC1-SP / XY1-SP | 119.20 |
| Hoya | Vivinex Toric XY1A | 119.20 |
| Hoya | Vivinex Impress XY1EM | 119.20 |
| Hoya | Vivinex Gemetric / Gemetric Toric XY1G / XY1GT | 119.10 |
| Lenstec | IOL Model | A-constant |
| Lenstec | SBL-3 | 118.35 |
| Lenstec | Softec HDO | 118.40 |
| Medicontur | IOL Model | A-constant |
| Medicontur | Bi-Flex 677AB / 677ABY | 118.10 |
| Medicontur | Q-Flex 640AB / 640ABY | 118.10 |
| Medicontur | Bi-Flex 677P / PY | 118.90 |
| Medicontur | Q-Flex PIL-MA 640P / PY / PMY | 118.90 |
| Medicontur | Bi-Flex PIL-MA 677PT / PTY / PMY / MTY / PMTY | 118.90 |
| Medicontur | Bi-Flex T toric 677TA / TB / TAY / TBY | 118.90 |
| Medicontur | Bi-Flex M 640MY / 677MY | 118.90 |
| Medicontur | Bi-Flex HB 877FAB / 877FABY | 118.90 |
| Medicontur | Bi-Flex POB-MA 877PA / 877PAY | 118.90 |
| Oculentis | IOL Model | A-constant |
| Oculentis | LU313 MF30T | 118.20 |
| Oculentis | L402 | 118.20 |
| Oculentis | L302-1 | 118.30 |
| Oculentis | L312 | 118.50 |
| Oculentis | LS313 | 118.50 |
| Oculentis | Lentis Mplus X | 118.50 |
| Oculentis | LS502-1 | 118.70 |
| OPHTEC | IOL Model | A-constant |
| OPHTEC | Monofocal 560 | 118.60 |
| OPHTEC | Precizon Presbyopic 570A0 / 570A1 | 118.60 |
| OPHTEC | Precizon Toric 565 | 118.60 |
| OPHTEC | Monomax PC550 | 118.70 |
| OPHTEC | Precisal P302AC / P302A | 118.90 |
| OPHTEC | Quadrimax PC545 | 119.00 |
| PhysIOL | IOL Model | A-constant |
| PhysIOL | Micro F | 118.80 |
| PhysIOL | Micro+ A 123, Micro+ AY 123 / SlimFlex | 118.90 |
| PhysIOL | Pod F, Pod FT / Ankoris | 118.95 |
| PhysIOL | MicroPure 123 / PodEye | 119.40 |
| Rayner | IOL Model | A-constant |
| Rayner | Centerflex 570H | 118.40 |
| Rayner | M-flex T 588 / 638F toric | 118.70 |
| Rayner | C-flex 570C / 970C | 118.75 |
| Rayner | Superflex 620H / 920H | 118.75 |
| Rayner | M-flex 630F / 580F | 118.80 |
| Rayner | 755U | 118.80 |
| Rayner | T-flex 573T / 673T toric | 118.95 |
| RxSight | IOL Model | A-constant |
| RxSight | 60005 | 119.10 |
| Staar | IOL Model | A-constant |
| Staar | CQ-2015A | 118.56 |
| Staar | AA4203-TF Toric / AA4203-TL Toric | 118.64 |
| Staar | AQ-2010V / AQ-5010V | 119.12 |
| Zeiss | IOL Model | A-constant |
| Zeiss | CT ASPHINA 509M / 509MP pre-loaded | 117.90 |
| Zeiss | AT LISA 809M | 118.00 |
| Zeiss | CT ASPHINA 409M | 118.30 |
| Zeiss | AT LISA toric 909M | 118.40 |
| Zeiss | CT LUCIA 602 (previously Aaron Scientific EC-3 PAL) | 118.40 |
| Zeiss | CT LUCIA 202 | 118.46 |
| Zeiss | CT ASPHINA 404 | 118.52 |
| Zeiss | AT Torbi 709M / MP | 118.61 |
| Zeiss | AT LISA tri 839MP | 118.80 |
| Zeiss | AT LISA tri 939MP Toric | 118.80 |
| Zeiss | CT LUCIA 601P / PY | 119.20 |
| Zeiss | CT LUCIA 221 | 119.80 |
| Zeiss | CT LUCIA 621P / PY | 120.20 |