Saturday, July 12, 2008

The Eye



Which part of your body lets you read the back of a cereal box, check out a rainbow, and see a softball heading your way? Which part lets you cry when you're sad and makes tears to protect itself? Which part has muscles that adjust to let you focus on things that are close up or far away? If you guessed the eye, you're right!
Your eyes are at work from the moment you wake up to the moment you close them to go to sleep. They take in tons of information about the world around you — shapes, colors, movements, and more. Then they send the information to your brain for processing so the brain knows what's going on outside of your body.
You can see that the eye's pretty amazing. So, come on — let's take a tour of its many parts.
Eye See you can check out different parts of the eye by looking at your own eye in the mirror or by looking at (but not touching) a friend's eye. Some of the eye's parts are easy to see, so most friends will say OK. Most friends won't say OK if you ask to see their liver!

M-Flex T (Rayner)




Standard multifocal IOLs are often contraindicated for patients with >1.5D of corneal astigmatism. With Rayner M-flex® T Multifocal Toric IOLs, the combination of multifocal and toric optical components allows the potential benefit of reduced spectacle dependence to be extended to patients with significant corneal astigmatism. Rayner M-flex® Multifocal IOLs are based on a multi-zoned refractive aspheric optic technology, with either 4 or 5 annular zones (depending on IOL base power) providing +3.0D or +4.0D of additional refractive power at the IOL plane (equivalent to +2.25D or +3.0D at the spectacle plane). M-flex® IOLs are noted for their excellent multifocal correction with a marked absence of halos and glare, and a minimum loss of contrast sensitivity compared with diffractive designs. Rayner T-flex® Toric IOLs are designed to offer a precise, superior alternative to incisional methods for the treatment of pre-existing corneal astigmatism. Unlike plate-haptic and multi-piece toric IOLs, T-flex® IOLs have an inherent rotational stability. Superb visual outcomes are achieved because of the dependable absence of rotation in lenses designed with Rayner’s patented AVH Technology®. Rayner M-flex® T Multifocal Toric IOLs combine the separate optical features of the parent models, M-flex® and T-flex®, to provide a superior multifocal outcome with an accurate, predictable and sustainable toric correction. In addition to an excellent multifocal toric correction, M-flex® T Multifocal Toric IOLs offer all the additional advantages of IOLs in the Rayner injectable IOL range.
Patented AVH Technology® for perfect centration, anterior/posterior and torsional stability
Exceptional rotational stability
Unique Amon-Apple Enhanced Square Edge for reduced PCO
Manufactured from Rayacryl® hydrophilic acrylic co-polymer: - High biocompatibility - Low PCO - Optical purity – no vacuoles or glistenings - Low Silicone Oil adherence - Superb handling characteristics
Good range of powers available.Physical parameters 588F and 588N for base powers > 25.0D 638F and 638N for base powers =<>
One M-flex® T injectable IOL •
One Rayner Single Use Soft-Tipped Injector

sulco Flex (Rayner)












Rayner Sulcoflex® Pseudophakic IOLs are specifically indicated for:
The correction of Post-surgical ametropia
Enhancement of the refractive result after RLE or PRELEX.
Enhancement of near / far vision
Correction of any residual corneal astigmatism correction of refractive changes following paediatric implantation.Physical parameters Optic Body Diameter 6.5mm Overall Length 13.5mm Haptic angulation 10° Optic configuration Anterior Convex, Posterior Concave Power Availability Sulcoflex® Aspheric (model 653L) -2.0D to +2.0D in 0.5D increments. Sulcoflex® Toric (model 653T) -2.0D to +2.0D in 0.5D increments with up to +6.0D cylinder. Sulcoflex® Multifocal (model 653F) -2.0D to +2.0D in 0.5D increments with +3.0D addition at the IOL plane. Model 653L is CE marked but models 653T and 653F are CE application pending and are not currently available (Jan 2008). Presentation Rayner Sulcoflex® Pseudophakic IOLs are supplied in 0.9% saline solution in a pouched blister pack, sterilised by moist heat and presented in a convenient, ready to use Lens Injection System Pack containing:
One Sulcoflex® Pseudophakic IOL
One Rayner Single Use Soft-Tipped Injector

Aspheric IOL


Aspheric IOL (Rayner)
Recent advances in IOL design have involved the application of wavefront technology to help improve optical efficiency and visual function. The ability to measure Higher Order Aberrations has led to a much greater understanding of the eye as an optical system, resulting in a new category of IOLs – aspherics – which are capable of providing an excellent quality of vision and improved contrast sensitivity particularly in mesopic illumination. In the younger eye, the naturally-occurring positive spherical aberration of the cornea is largely balanced by the negative spherical aberration of the crystalline lens, resulting in optimal vision. However, with age, that negative spherical aberration becomes more positive, creating an imbalance which can reduce contrast sensitivity and thus, visual function. This compounds the reduced contrast sensitivity of the ageing macula. Aspheric IOLs, unlike conventional IOLs (which have positive spherical aberration), induce significantly less spherical aberration by effectively avoiding adding to the positive spherical aberration of the cornea. As such, they are associated with an increased contrast sensitivity and functional visual acuity, particularly under mesopic and scotopic conditions. This can lead to an improved night vision and decreased glare. As contrast sensitivity tends to decline with age, aspheric IOLs can minimise loss of contrast sensitivity to optimal levels. However, aspheric IOLs can either be based on negative spherical aberration designs (to try to correct existing corneal asphericity), or they can be truly aspheric, or aberration-neutral, to reduce the occurrence of additional and unwanted optical aberrations. There are concerns that IOLs with negative spherical aberrations may, by producing a very flat wave-front, have an undesirable effect on the depth of field. The Rayner C-flex Aspheric and Superflex® Aspheric IOLs are spherically aberration-neutral with the aspheric modification being applied to the anterior surface of the IOL, providing uniform refractive power from the centre of the optic to its edge, for optimal visual outcomes. The depth of field of this lens is very similar to standard IOLs whilst having the advantages discussed above. Additionally, unlike negative spherical aberration designs, aberration-neutral IOLs do not contribute to any pre-existing higher order aberrations in the visual axis, thereby optimising image quality, regardless of the patient's idiosyncratic spherical aberration, or indeed, by any limitations imposed by previous surgery. Similarly, unlike negative spherical aberration designs, with aberration-neutral IOLs, the image quality is much less likely to be affected by decentration or tilt. In addition to all these advantages, the Rayner C-flex Aspheric and Superflex® Aspheric IOLs offer the technology of the existing IOL platform. These include the Amon-Apple Enhanced Square Edge for exemplary low posterior capsular opacification rates, AVH (anti-vaulting haptic) Technology for optimal centration, and a single use Soft-tipped injector capable of IOL insertion through a sub 3mm incision. The Rayner C-flex (970C) Aspheric and Superflex® (920H) Aspheric
Increased contrast sensitivity
Increased functional visual acuity
Optimised visual outcomes even under reduced lighting conditions
Increased depth of field compared with designs corrected for corneal spherical aberration, such as negative aberration designs
Less susceptible to the effects of tilt and decentration compared with negative aberration designs - a benefit which is further enhanced by the incorporation of AVH Technology®.Physical parameters

C-flex (970C) Aspheric / Superflex® (920H) Aspheric
Optic Body Diameter: 970C: 5.75mm 920H: 6.25mm
Overall Length: 970C: 12.00mm 920H: 12.50mm
Estimated SRK A-Constant: 970C: 118.0 920H: 118.0
Theoretical ACD: 970C: 4.97mm 920H: 4.97mm
Power availability C-flex (970C) Aspheric +18.0D to +29.5D in 0.5D increments
+30.0D to +34.0D in 1.0D increments
Superflex® (920H) Aspheric -10.0D to -0.5D in 0.5D increments
+0.5D to +22.0D in 0.5D increments
Presentation The Rayner C-flex Aspheric and Superflex® Aspheric hydrophilic acrylic injectable IOL is supplied in 0.9% saline solution in a pouched blister pack, sterilised by moist heat and presented in a convenient, ready-to-use system pack•

One C-flex Aspheric or Superflex® Aspheric injectable IOL •
One Rayner Single Use Soft-Tipped Injector













Thursday, July 10, 2008

Contact lenses















Place of Origin:Italy
Brand Name:Eclisse by Eyeart -produced by Eyemed
Model No:5 different colors
Certification:ISO 9001-2000 - Ce mark
Company Info
Company Published: 2005Online Postings: Products (3), Selling Leads (0)Country/Territory: ItalyBusiness Type: ManufacturerNumber of Employees: 11 - 50 People
















I- Kare (Pakistan)



I -Kare (Pakistan)




Technical details

Optic Style:0D to +7D Concave/Convex +8D to +34D Biconvex
Power Range:10.0D to +16D in 1D increments

+16.5D to 26.5D in 0.5D increments
+27D to +30D in 1D increments
Optic Size: 6.5Positioning Holes: 2Haptic Angulation: step vaulted 13°Haptic Overall Diameter (mm): 12.5
Estimated SRK A: 118.5Constant

Company Info:
Sorabjee Patel @ Co.

ACL







The Rayner range of PMMA intraocular lenses



Single-piece PMMA Anterior Chamber

Technical details

Power Range:
+6D to +27D in 1D increments
Optic Size: 5.0Positioning Holes:
noHaptic Angulation:
vaulted optic with 4 footplatesHaptic
Overall Diameter (mm): 12.0, 12.5, 13.0, 13.5, 14.0
Estimated SRK A: 116.0Constant
AC Depth: 3.8

PMMA Lenses


The Rayner range of PMMA intraocular lenses
Single-piece PMMA Posterior Chamber
Technical details
Power Range:
0D to +16D in 1D increments
+16.5D to 26.5D in 0.5D increments
+27D to +34D in 1D increments
Optic Size: 6.4
Positioning Holes: 2Haptic Angulation:
step vaulted 13°Haptic Overall Diameter (mm): 12.5
Estimated SRK A: 118.0Constant
AC Depth: 4.97

Acrysof


AcrySof® IOLs
With 25 million implants worldwide, AcrySof® lenses are the most frequently implanted in the world, as physicians appreciate the long-term clinical results and unmatched stability of the lens. Recent advances to this line of lenses also address other visual disturbances while correcting for cataracts.For patients with cataracts and presbyopia there is the AcrySof® ReSTOR® lens, which corrects for both conditions at the same time, eliminating the need for spectacles after surgery in most patients. Clinical trials showed that over 80 percent of patients receiving this lens never required glasses for any task following surgery.

Wednesday, July 9, 2008

Super -Flex












The Rayner S-flex (620H) hydrophilic acrylic injectable IOL
(6.25mm Optic)
With
Rayner Single Use Soft-Tipped Injector
Power Availability
+8.0D to +30.0D in 0.5D increments
+30.0D to +34.0D in 1.0D increments
+18.0D to +23.75D in 0.25D increment

C- FlexFoldable Lens










The Rayner C-flex (570C) hydrophilic injectable IOL
(5.75 mm Optic)
With
Rayner Single Use Soft-Tipped Injector
Power Availability
+8.0D to +30.0D in 0.5D increments
+30.0D to +34.0D in 1.0D increments
+18.0D to +23.75D in 0.25D increment
The Rayner C-flex (570C) IOL

FDA Approved.
Patented AVH Technology® for perfect centration and stability
Unique Amon-Apple Enhanced Square Edge for reduced PCO
Manufactured from Rayacryl® hydrophilic acrylic
co-polymer for: - High biocompatibility - Low PCO - Optical purity –
no vacuoles or glistenings - Low Silicone Oil adherence -
Superb handling characteristics.

Presentation
The Rayner C-flex (570C) hydrophilic acrylic injectable IOL is supplied in 0.9% s
aline solution in a pouched blister pack, sterilised by moist heat
and presented in a convenient, ready to use Lens Injection System Pack containing:
One C-flex injectable IOL
One Rayner Single Use Soft-Tipped