Modular intraocular implant

• US 20090005864A1
• Filed: 07/25/2008
• Published: 01/01/2009
• Est. Priority Date: 03/18/1996
• Status: Abandoned Application

• Current Assignee: Harry C. Eggleston
• Original Assignee: Harry C. Eggleston
• Inventors: Eggleston, Harry C.
• Application Number:
  US12/220,509
• Publication Number:
  US 20090005864A1
• Time in Patent Office: Days
• US Class Current: 623/6.110
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1629 for changing longitudinal position, i.e. along the visual axis when implanted
• CPC Class Codes: A61F 2/1637 Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses
• CPC Class Codes: A61F 2002/1681 having supporting structure for lens, e.g. haptics
• CPC Class Codes: A61F 2002/169 Surrounding optic
• CPC Class Codes: A61F 2210/009 magnetic
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements

Abstract

An adjustable ocular insert to be implanted during refractive cataract surgery and clear (human) crystalline lens refractive surgery and adjusted post-surgically. The implant comprises relatively soft but compressible and resilient base annulus designed to fit in the lens capsule and keep the lens capsule open. Alternatively the annulus may be placed in the anterior or posterior chamber. The annulus can include a pair of opposed haptics for secure positioning within the appropriate chamber. A rotatable annular lens member having external threads is threadedly engaged in the annulus. The lens member is rotated to move the lens forward or backward so to adjust and fine-tune the refractive power and focusing for hyperopia, myopia and astigmatism. The intraocular implant has a power range of approximately +3√0π−3 diopters.

Claims

1. A blank for forming an ophthalmic lens, including a lens assembly, said lens assembly having a front optical lens and said front optical lens having a button section, a concentric stem integrally formed on and extending rearwardly from the button section, said concentric stem having a height similar to the height of the button section, a magnetic ring, said magnetic ring having an approximate height as said concentric stem and provided for snuggly seating onto said concentric stem so that the stem and magnetic ring have approximately the same height when fixed together, a cap, said cap having a body with bore formed therein, said concentric stem and fixed ring provided for tightly fitting within said cap bore when the cap and front optical lens are secured together, wherein said cap covers the magnetic ring and the concentric stem of the lens assembly when secured together, said cap and button section have sufficient height and of a material thickness capable of having a series of threads formed thereon, whereby the button of the front optical lens assembly and the surface of the end of the cap may be machined to the desired optical curvature to achieve the required dipotric power after assembly.