What is a constant of IOL?
What is a constant of IOL?
The constant is a theoretical value that relates the lens power to AL and keratometry, it is not expressed in units and is specific to the design of the IOL and its intended location and orientation within the eye.
What type of lens is ma60ac?
AcrySof (model MN60AC) is a multipiece posterior chamber lens with proprietary blue light filtering chromophores that filter light in a manner that approximates the crystalline lens in the 400-475 nm blue light wavelength range.
What type of lens is SA60WF?
The AcrySof Aspheric IOL (model SA60WF) is an ultraviolet-absorbing acrylic foldable single-piece IOL. The lens consists of a high refractive index soft acrylic material capable of being folded prior to insertion. The lens has a biconvex optic with supporting haptics.
Is SN60WF a toric lens?
The toric group received SN6AT series (Alcon Inc., Fort Worth, TX, USA) IOLs (SN6AT3-SN6AT9; Alcon Inc.) bilaterally, and the non-toric group received SN60WF (Alcon Inc.).
What is a three piece IOL?
Single-piece IOLs have soft and broader haptics which are made of the same material as the optic, usually hydrophobic or hydrophilic acrylic, whereas 3-piece IOLs have rigid haptics which are made of poly methyl methacrylate (PMMA).
What type of IOL is the SN60WF?
AcrySof IQ Monofocal IOL
The AcrySof IQ lens (model SN60WF) is a single-piece IOL with proprietary blue light filtering chromophores that filter light in a manner that approximates the crystalline lens in the 400-475 nm blue light wavelength range.
What is K1 and K2 in pentacam?
From the Pentacam examination, flat (K1) and steep (K2) keratometric readings, maximum simulated keratometry (Kmax), corneal thickness at the thinnest point of the cornea (minimal pachymetry), index of surface variance (ISV), index of vertical asymmetry (IVA), KCN index (KI), anterior elevation (AE) and posterior …
What are K readings?
Keratometry (K) is the measurement of the corneal curvature; corneal curvature determines the power of the cornea. Differences in power across the cornea (opposite meridians) results in astigmatism; therefore, keratometry measures astigmatism.
Which is the best formula for IOL calculation?
In conclusion, calculation of the IOL power can be performed using a great variety of formulas. According to clinical studies, the SRK-T formula is recommended for rather long eyes whereas the Hoffer Q formula is recommended for rather short eyes.
What are the 3 types of cataract surgery?
3 Main Types of Lens Implants for Cataract Surgery
- Monofocal lens. These are the standard types of IOL implants used for patients who are having cataract removal.
- Toric lens. Toric lens are designed to correct the for nearsightedness with astigmatism or farsightedness with astigmatism.
- Multifocal and Accommodating lenses.
What is AcrySof IQ IOL?
The AcrySof IQ IOL (Alcon) is designed to provide a youthful lens to patients with cataracts. With its advanced biocompatible material and innovative design, it is designed to mimic the young adult lens by not only reducing spherical aberrations, but also filtering blue light.
Are the Lens Constants in IOLMaster lenses definitive?
These lens constants are not meant to be definitive. Click on links below to view specific IOLMaster lens constants. It is important to remember that these numbers simply represent a starting point, with optimization to follow. These lens constants are not meant to be definitive.
What is the PACD of the Zeiss at Torbi 709 MP?
ZEISS AT TORBI 709 MP A=118.3 a0=1.13 a1=0.40 a2=0.10 pACD=5.37 sf=1.59 A=118.5 A=118.3 48 [372] Zeiss AT LISA toric 909 MP A=118.3 a0=1.02 a1=0.40 a2=0.10 pACD=5.30 sf=1.50 A=118.4 A=118.2 43 [96],[372]
What are the different sizes of Staar IOL toric?
T-flex 573T & 673T toric 118.95 Staar IOL Model A-constant Staar CQ-2015A 118.56 Staar AA4203-TF Toric & AA4203-TL Toric