Secondary intraocular lens with magnifying coaxial optical portion

A technology of intraocular lenses and optics, applied in the direction of intraocular lenses, eye implants, etc., can solve problems such as undesigned

Active Publication Date: 2017-05-10
INVESTMED KFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lenses in these applications are described as stand-alone lenses, not designed as secondary IOLs that need to cooperate optically with primary IOLs

Method used

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  • Secondary intraocular lens with magnifying coaxial optical portion
  • Secondary intraocular lens with magnifying coaxial optical portion
  • Secondary intraocular lens with magnifying coaxial optical portion

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Embodiment Construction

[0024] Such as Figure 1-2 As described in, a two-stage intraocular lens, IOL, is provided that is made of a foldable soft material such as acrylic or silicone. The secondary IOL 2 includes a haptic 7 for securing and stabilizing it in the patient's eye, and an optically active portion 9 . These haptics can be of any shape known in current IOLs: open C-shape (as in our diagram) or Z-shaped rings, closed rings, or disk-shaped haptics, with or without fenestrations, with or without axial horn.

[0025] The optically active part 9 comprises a central optical part 10 , and a peripheral optical part 11 , which extends around the central optical part 10 . The central optic 10 and the peripheral optic 11 form two distinct but coaxially positioned lenses from a single block. The optically active portion 9 may have a diameter 13 between 4 mm and 10 mm, preferably between 5 mm and 7 mm.

[0026] The central optic 10 is designed to form a positive lens that provides additional refrac...

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Abstract

A secondary foldable intraocular lens, IOL, (2) is provided that is surgically implanted in addition to at least one primary IOL (1) in the patient's pseudo-phakic eye. The secondary IOL (2) is arranged optically coaxial to the primary IOL (1) focusing a combined image onto the retina (5) of the patient's eye (4) additionally magnifying at least a central part of the image of the primary IOL (1) projected onto the macula (6) of the retina (5). The secondary IOL (2) comprises one or more haptics (7) for fixing and stabilizing it within the sulcus ciliaris (8) of the patient's eye (4) - and an optically active portion (9) designed to project the image through the primary IOL (1) onto the retina (5). The optically active portion (9) of the secondary IOL (2) comprises a central optical portion (10) and a peripheral optical portion (11) extending around the central optical portion (10), forming two different, but coaxially positioned lenses from one block. The central optical portion (10) is designed to form a positive lens providing additional refraction of minimum 5D, up to maximum 25D to the refraction provided by the peripheral optical portion (11) of the secondary IOL (2).

Description

technical field [0001] The present invention relates to a secondary (so-called add-on) intraocular lens, IOL, which is surgically implanted in a patient's artificial phakic eye, i.e. prior to the implantation of said secondary IOL, additionally to the At least one IOL in the posterior chamber of the eye. Background technique [0002] Age-related macular degeneration (AMD) is a medical condition that affects the center of the retina (the macula) in older patients and causes loss of central vision. Peripheral vision is usually unaffected and patients retain orientation. Nonetheless, most patients lose the ability to read at least in the later stages of the disease, and AMD is the leading cause of blindness and visual impairment in patients older than 50 years of age in the Western world. [0003] Various surgical interventions implanted with specific lenses and devices have been proposed. Some systems are based on magnification of the image, but at the same time cause a sev...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/161A61F2/1648A61F2/1651A61F2/164A61F2002/1681
Inventor G·B·沙里奥特L·F·孔图尔
Owner INVESTMED KFT
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