EN
Preloaded Hydrophobic Acrylic IOL Injection System
Sterilisation and Packaging
The IOL is supplied sterile and preloaded in the RayOne delivery system within
a sterilised blister pack. The blister pack is steam sterilised and should only be
opened under sterile conditions. An implant card is included in the pack to record
all implant information (the supplied labels may be used). It shall be given to the
patient, with the instruction to keep this card. The card should be shown to any eye
care professional the patient visits in future.
Directions for Use
The RayOne preloaded injector should only be used for the placement of Rayner
IOLs into the eye.
To ensure optimum injection performance of the IOLs, the blister pack should be
allowed to equilibrate to a temperature of 18°C or above before use. The use of a
sodium hyaluronate based OVD is recommended.
Use of RayOne
Fig 1 Completely peel back the lid of the first blister pack.
Fig 2 Carefully peel back the lid of the second blister pack.
Fig 3 Carefully drain the saline from the blister pack and peel off remaining lid. Do
not remove the injector from the blister tray.
Fig 4 Do not remove the injector from the blister tray. Insert the viscoelastic
cannula into the opening marked with an arrow on the cartridge and apply
sufficient OVD to completely fill the cartridge.
Fig 5 Keep the injector in the tray and close the cartridge firmly together by
pushing the moving half of the cartridge (Labelled 2) against the fixed half until you
hear it click closed. Check both clips have “clicked” shut and secured the cartridge.
Fig 6 Gently lift out the injector from the tray.
Fig 7 Press the plunger in a slow and controlled manner. If excessive resistance is
felt this could indicate a blockage; stop and discard the injector and lens. In the case
of IOL rotation during ejection from the nozzle, gently rotate the injector in the
opposite direction to counteract any movement. Stop depressing the plunger when
the IOL exits the nozzle. Discard the injector after use.
Following implantation, irrigate/aspirate to eliminate any OVD residues from the
eye, especially behind the IOL.
IOL Placement
Ensure that the IOL is implanted in the capsular bag with the correct
anterior/posterior placement. Correct anterior/posterior placement
is achieved when the haptics sweep away from the optic in a counter-
clockwise direction (anterior view Figure 9). The IOL can be dialled
clockwise as is usual for posterior chamber IOLs. The anterior
continuous curvilinear capsulorhexis should be positioned just
covering the 360° anterior edge of the IOL optic by 0.5 to 1.0 mm.
Calculation of IOL Power
The surgeon should preoperatively determine the power of the IOL
to be implanted. Lens power calculation methods are described in the
following references:
1. Retzlaff J., Sanders D. & Kraff M. Lens Implant Power
Calculation, A Manual for Ophthalmologists & Biometrists
- Third Edition, 1990
2. Holladay J. A Three-part System For Refining Intraocular Lens Power
Calculations. J. Cataract Refract. Surg. V14:17-24, 1988
3. Holladay J. Standardizing Constants For Ultrasonic Biometry,
Keratometry & IOL Power Calculations. J. Cataract Refract. Surg.
V23:1356-1370, 1997
4. Hoffer K. The Hoffer Q Formula: A Comparison of Theoretic and Regression
Formulas. J. Cataract Refract. Surg. V19:700-712, 1993; ERRATA, 20:677,
1994; ERRATA, 33:2, 2007
Figure 9
IOL Haptic
Orientation
