Description

The 67B Aniridia IOL, also known as the Aniridia Implant Type 67B by Morcher, is a specialized intraocular lens designed for patients with aniridia or significant iris defects. This lens is intended for use in aphakia or cataract surgeries, providing essential light occlusion and visual rehabilitation.

Implantation and Fixation

• Incision Requirement: The lens requires a large incision of over 10.0mm for implantation.
• Fixation Options: It offers versatile fixation methods, including sulcus placement or scleral fixation using sutures (9-0 Prolene with a spatula needle).

Optical Features

• Monofocal Design: The lens features a monofocal, refractive optical principle with a spheric optic.
• Spherical Aberration: It includes a spherical aberration of +0.2μ.
• Biconvex Optic: The optic is biconvex with no toric correction for astigmatism.
• Pupillary Aperture: The pupillary aperture measures 3.0mm.
• Diaphragm Sizes: Diaphragm sizes range from 3.0mm to 10.0mm.
• Overall Diameter: The overall lens diameter is 12.5mm with a haptic angulation of 0°.

Material and Optical Properties

• Materials: The optic is made from black PEMA, while the haptics are constructed from PMMA.
• Refractive Index: The lens has a refractive index of 1.49.
• A Constant: A constant is 119.6 when sclera sutured.
• ACD Constants: ACD constants are 5.37 and 5.90 when sclera sutured.

Light Protection

• UV Protection: The lens provides UV-light protection but lacks additional blue light control.

Design Considerations

• Color: The black color of the lens may be more noticeable in lighter-colored irises, potentially affecting cosmetic outcomes due to limited color options.

Regulatory Information

• Approval Status: The lens is not FDA approved and is available in the United States only through clinical trials or compassionate use exemptions.

Additional Features

Part of Morcher’s line of iris-reconstruction lenses, the 67B Aniridia IOL serves as a combination artificial iris and lens, addressing large iris defects to offer both functional and cosmetic benefits.