Apparatus and methods for prevention of age-related macular degeneration and other eye diseases

• US 20030105456A1
• Filed: 12/04/2001
• Published: 06/05/2003
• Est. Priority Date: 12/04/2001
• Status: Abandoned Application

• Current Assignee: J.T. Lin
• Original Assignee: J.T. Lin
• Inventors: Lin, J.T.
• Application Number:
  US10/000,163
• Publication Number:
  US 20030105456A1
• Time in Patent Office: Days
• US Class Current: 606/5
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/20351 Scanning mechanisms
• CPC Class Codes: A61B 2018/20359 by movable mirrors, e.g. galvanometric
• CPC Class Codes: A61F 2009/00863 Retina
• CPC Class Codes: A61F 2009/00865 Sclera
• CPC Class Codes: A61F 2009/00891 Glaucoma
• CPC Class Codes: A61F 2009/00897 Scanning mechanisms or algorithms
• CPC Class Codes: A61F 9/008 using laser
• CPC Class Codes: A61F 9/00802 for photoablation
• CPC Class Codes: A61F 9/00821 for coagulation

Abstract

Surgical apparatus and surgical methods are proposed for the prevention of age-related macular degeneration (AMD) and choroidal neovascularization (CNV), and other eye diseases such as glaucoma by removal of the sclera tissue to reduce its rigidity and increase the flood flow and decrease pressure in the choriocapillaris. The disclosed preferred embodiments of the system consists of a tissue ablation means and a control means of ablation patterns and a fiber delivery unit. The basic laser beam includes UV lasers and infrared lasers having wavelength ranges of (0.15-0.36) microns and (0.5-3.2) microns and diode lasers of about 0.98, 1.5 and 1.9 microns. AMD and CNV are prevented, delayed or reversed by using an ablative laser to ablate the sclera tissue in a predetermined patterns outside the limbus to increase the elasticity of the sclera tissue surrounding the eye globe The surgery apparatus also includes non-laser device of radio frequency wave, electrode device, bipolar device and plasma assisted device

Claims

1. A surgery method of preventing age-related macular degeneration (AMD) by reducing the rigidity of the sclera of an eye, whereby a removal means is used to remove portion of the sclera tissue in a predetermined pattern to reduce the risk factors of AMD selected from the group consisting of low blood flow and high pressure in the choriocapillaris and formation of drusen in the suretinal space.

2. A surgical method as claimed in claim 1, wherein said removal means includes a laser having a preferable wavelength of about (0.15-3.2) microns.

3. A surgical method as claimed in claim 1, wherein said removal means includes a physical blades.

4. A surgical method as claimed in claim 1, wherein said removal means includes an electromagnetic wave at radio frequency, or electrode device, or bipolar device or plasma assisted electrode device.

5. A surgery method of preventing AMD in accordance with claim 1, in which said predetermined pattern includes patterns selected from the group consisting of radial lines, curved lines, ring-dot and non-specific patterns around the area of the eye outside the limbus.

6. A surgery method of preventing AMD in accordance with claim 1, in which said rigidity of the sclera is reduced by the filling effects of the sub-conjunctival tissue.

7. A surgical apparatus to remove a portion of the sclera tissue of an eye comprising

(a) a tissue removal means, and

(b) a control means of predetermined ablation pattern,

whereby AMD can be prevented by reducing the rigidity of the sclera.

8. A surgical apparatus as claimed in claim 7, wherein said removal means included a laser having a wavelength range of about (0.15-0.36) microns.

9. A surgical apparatus as claimed in claim 7, wherein said removal means included infrared laser having a wavelength range of about (0.8-3.2) microns.

10. A surgical apparatus as claimed in claim 8, wherein said laser is selected from the group consisting of ArF excimer laser, XeCl excimer laser, harmonic generation from Nd:

YAG laser and Nd;

YLF laser.

11. A surgical apparatus as claimed in claim 9, wherein said infrared laser is an optically pumped Erbium:

YAG laser having a wavelength of about 2.9 microns

12. A surgical apparatus as claimed in claim 9, wherein said infrared laser is a solid-state short pulse laser having a wavelength range of about (1.0-1.3) microns and a pulse duration shorter than 10 nanoseconds.

13. A surgical apparatus as claimed in claim 9, wherein said infrared laser is a semiconductor diode laser having a wavelength range of about (0 8-2.1) microns

14. A surgical apparatus as claimed in claim 7, wherein said control means is selected from the group consisting of a scanning device having motorized reflection mirror, a refractive optics and optical device

15. A surgical apparatus as claimed in claim 7, wherein said control means includes the use of a fiber delivery unit to deliver said laser in a predetermined pattern onto a plurality of positions on the eye.

16. The apparatus of claim 15, wherein said fiber delivery unit is operated by a mode selected the group consisting of contact-mode and non-contact mode to ablate the sclera tissue.

17. A surgical apparatus as claimed in claim 15, wherein said fiber delivery unit is controlled by the surgeon to perform a predetermined patterns outside the limbus of the eye by manually moving said fiber delivery unit.

18. A surgical apparatus as claimed in claim 7, wherein said predetermined pattern is selected from the group consisting of radial lines, curved lines, ring-dot and non-specific pattern around the area outside the limbus.

19. A surgical apparatus as claimed in claim 7, wherein said removal means includes a physical blades.

20. A surgical apparatus as claimed in claim 7, wherein said removal means is selected from the group consisting of electromagnetic wave at radio frequency, electrode device, bipolar device oand plasma assisted electrode device.

21. A surgical apparatus to remove a portion of the sclera tissue of an eye comprising:

(c) a tissue ablation means, and

(d) a control means of predetermined ablation pattern,

whereby glaucoma can be prevented or treated by decreasing the intraocular pressure of the treated eye.

22. A surgical apparatus as claimed in claim 21, wherein said tissue ablation means includes a laser having a wavelength range of about (0.15-3.2) microns.

23. A surgical apparatus as claimed in claim 21, wherein said tissue ablation means is selected from the group consisting of a physical blades, an electromagnetic wave at radio frequency, oelectrode device, bipolar device and plasma assisted electrode device.

24. A surgical apparatus as claimed in claim 21, wherein said predetermined pattern is selected from the group consisting of radial lines, curved lines, ring-dot and non-specific pattern around the area outside the limbus.