CA2275762A1 - Apparatus for improving vision and resolution of retinal images - Google Patents
Apparatus for improving vision and resolution of retinal images Download PDFInfo
- Publication number
- CA2275762A1 CA2275762A1 CA002275762A CA2275762A CA2275762A1 CA 2275762 A1 CA2275762 A1 CA 2275762A1 CA 002275762 A CA002275762 A CA 002275762A CA 2275762 A CA2275762 A CA 2275762A CA 2275762 A1 CA2275762 A1 CA 2275762A1
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- CA
- Canada
- Prior art keywords
- point source
- retina
- source image
- eye
- reflected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000004377 improving vision Effects 0.000 title abstract 2
- 230000004256 retinal image Effects 0.000 title abstract 2
- 230000004075 alteration Effects 0.000 claims abstract 43
- 210000001525 retina Anatomy 0.000 claims abstract 30
- 230000002207 retinal effect Effects 0.000 claims abstract 18
- 230000003287 optical effect Effects 0.000 claims abstract 16
- 238000000034 method Methods 0.000 claims abstract 9
- 238000001356 surgical procedure Methods 0.000 claims abstract 3
- 230000004438 eyesight Effects 0.000 claims abstract 2
- 210000004087 cornea Anatomy 0.000 claims 3
- 239000004973 liquid crystal related substance Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000004576 sand Substances 0.000 claims 1
- 201000009310 astigmatism Diseases 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 abstract 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
- A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
- A61B3/156—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
Abstract
An apparatus for improving vision and resolution of retinal images comprises a point source produced on the retina (101) of a living eye (100) by a laser beam (102). The laser beam reflected from the retina is received at a lenslet array of a Hartmann-Shack wavefront sensor (148) such that each of the lenslets forms an aerial image of the retinal point source on a CCD camera (146) located adjacent to the lenslet array. The output signal from the CCD camera is acquired by a computer (150) which processes the signal and produces a correction signal which may be used to control a compensating optical or wavefront compensation device such as a deformable mirror (118). It may also be used to fabricate a contact lens or intraocular lens, or to guide a surgical procedure to correct the aberrations of the eye. Any of these methods could correct aberrations beyond defocus and astigmatism, allowing improved vision and improved imaging of the inside of the eye.
Claims (28)
1. A wavefront sensor for determining the wave aberrations of the living eye, said wavefront sensor receiving a reflected point source image of the retina of said eye, comprising:
a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina and for creating an aerial image of the retinal point source;
said lenslet array being configured such that it is capable of providing resolution for at least fifth order aberrations;
a camera located adjacent to said lenslet array for viewing said aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array; and a digital data processor connected to receive video output signals from said camera and for converting said video output signals to digital signals representative of said retinal point source aerial images, said digital data processor further calculating the wave aberrations of said eye so as to include at least fifth order modes, using said representative digital signals.
a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina and for creating an aerial image of the retinal point source;
said lenslet array being configured such that it is capable of providing resolution for at least fifth order aberrations;
a camera located adjacent to said lenslet array for viewing said aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array; and a digital data processor connected to receive video output signals from said camera and for converting said video output signals to digital signals representative of said retinal point source aerial images, said digital data processor further calculating the wave aberrations of said eye so as to include at least fifth order modes, using said representative digital signals.
2. The wavefront sensor of claim 1, further including a polarizer through which said reflected point source image of said retina passes prior to being received by said plurality of lenslets.
3. The wavefront sensor of claim 1, further including a compensating optical device connected to said digital data processor, such that, under control of said digital data processor, said compensating optical device is adjusted for providing wavefront compensation for said wave aberrations of said eye.
4. The wavefront sensor of claim 3, further including a polarizer filter through which said reflected point source image of said retina passes prior to being received by said plurality of lenslets.
5. The wavefront sensor of claim 1, wherein said lenslet array is capable of providing resolution of up to at least tenth order wave aberrations.
6. The wavefront sensor of claim 1, wherein said lenslet array is a Hartmann-Shack wavefront sensor having up to 217 lenslets.
7. The wavefront sensor of claim 1, further including at least one of a contact and intraocular lens fabrication system connected to receive the calculated wave aberrations from said digital data processor for fabricating at least one contact or intraocular lens to provide wavefront compensation for said wave aberrations of said living eye.
8. The wavefront sensor of claim 1, further including surgical equipment connected to receive the calculated wave aberrations from said digital data processor for use in performing surgery on said living eye to provide wavefront compensation for said wave aberrations of said living eye.
9. The apparatus of claim 3, wherein said compensating optical device is one of a deformable mirror, liquid crystal device, micro-machined mirror and bimorph mirror.
10. Apparatus for fabricating contact or intraocular lenses to correct for at least the third order wave aberrations of the living eye, composing;
means for generating a reflected point source image of a retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating wave aberrations of the eye so as to include at least third order modes, using said digital signals; and at least one of a contact lens and intraocular fabrication system connected to receive the calculated wave aberrations from said digital data processor for fabricating at least one contact or intraocular lens to provide wavefront compensation for said at least third order wave aberrations of said living eye.
means for generating a reflected point source image of a retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating wave aberrations of the eye so as to include at least third order modes, using said digital signals; and at least one of a contact lens and intraocular fabrication system connected to receive the calculated wave aberrations from said digital data processor for fabricating at least one contact or intraocular lens to provide wavefront compensation for said at least third order wave aberrations of said living eye.
11. The apparatus of claim 10, wherein said means for generating comprises a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina, said lenslet array being configured such that it is capable of providing resolution for at least third order aberrations.
12. The apparatus of claim 10, further including a polarizing filter through which said reflected point source image of said retina, passes prior to being received by said means for receiving said reflected point source.
13. A method for fabricating contact lenses to correct at least the third order wave aberrations of the living eye, comprising the steps of:
generating a reflected point source image of the retina of said living eye;
receiving said reflected point source image and converting said point source image to corresponding digital signals;
calculating wave aberrations of said eye so as to include at least third order modes, using said digital signals; and receiving the calculated wave aberrations for fabricating at least one contact lens to provide wavefront compensation for said at least third order wave aberrations of said living eye.
generating a reflected point source image of the retina of said living eye;
receiving said reflected point source image and converting said point source image to corresponding digital signals;
calculating wave aberrations of said eye so as to include at least third order modes, using said digital signals; and receiving the calculated wave aberrations for fabricating at least one contact lens to provide wavefront compensation for said at least third order wave aberrations of said living eye.
14. The method of claim 13, further including the step of polarizing said reflected point source image to remove stray light reflected from the cornea of said living eye prior to receiving said reflected point source image.
15. A method for determining the wave aberrations of the living eye using a wavefront sensor which receives a reflected point source image of the retina of said eye, comprising the steps of:
16 providing a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina, said lenslet array being configured such that it is capable of providing resolution for at least fifth order aberrations;
receiving an aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array and generating signals representative thereof; and converting said signals to digital signals representative of said retinal point source aerial images, and calculating wave aberration's of said eye so as to include at least fifth order modes, using said representative digital signals.
16. The method of claim 15, further including the step of polarizing said reflected point source image to remove stray light reflected from the cornea of said living eye prior to said plurality of lenslets receiving said reflected point source image.
receiving an aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array and generating signals representative thereof; and converting said signals to digital signals representative of said retinal point source aerial images, and calculating wave aberration's of said eye so as to include at least fifth order modes, using said representative digital signals.
16. The method of claim 15, further including the step of polarizing said reflected point source image to remove stray light reflected from the cornea of said living eye prior to said plurality of lenslets receiving said reflected point source image.
17. A method for determining the wave aberrations of the living eye using a wavefront sensor which receives a reflected point source image of the retina of said eye, comprising the steps of:
providing a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina, said lenslet array being configured such that it is capable of providing resolution for at least third order aberrations;
receiving an aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array and generating signals representative thereof;
converting said signals to digital signals representative of said retinal point source aerial images, and calculating wave aberrations of said eye so as to include at least third order modes, using said representative digital signals; and adjusting a compensating optical device to provide wavefront compensation for said wave aberrations of said living eye using said calculated at least third order wave aberrations of said living eye.
providing a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina, said lenslet array being configured such that it is capable of providing resolution for at least third order aberrations;
receiving an aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array and generating signals representative thereof;
converting said signals to digital signals representative of said retinal point source aerial images, and calculating wave aberrations of said eye so as to include at least third order modes, using said representative digital signals; and adjusting a compensating optical device to provide wavefront compensation for said wave aberrations of said living eye using said calculated at least third order wave aberrations of said living eye.
18. Apparatus for generating high resolution images of the retina of the living eye, comprising:
means for generating a reflected point source image of the retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating at least third order wave aberrations using said digital signals;
means for illuminating a retinal disk on said living eye for producing a retinal disk image;
a compensating optical device for reflecting said retinal disk image, said compensating optical device being adjusted using said calculated wave aberrations such that wavefront compensation for said wave aberrations is provided for said living eye; and means for providing an image of said reflected retinal disk image after its reflection by said compensating optical device.
means for generating a reflected point source image of the retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating at least third order wave aberrations using said digital signals;
means for illuminating a retinal disk on said living eye for producing a retinal disk image;
a compensating optical device for reflecting said retinal disk image, said compensating optical device being adjusted using said calculated wave aberrations such that wavefront compensation for said wave aberrations is provided for said living eye; and means for providing an image of said reflected retinal disk image after its reflection by said compensating optical device.
19. The apparatus of claim 18, wherein said compensating optical device is one of a deformable mirror, liquid crystal device, micro-machined mirror and bimorph mirror.
20. The apparatus of claim 18, further including a polarizer through which said reflected point source image of said retina passes prior to being received by said plurality of lenslets.
21. The apparatus of claim 18, wherein said means for generating comprises a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina, said lenslet array being configured such that it is capable of providing resolution for at least third order aberrations.
22. An optical instrument which incorporates a wavefront sensor for determining the wave aberrations of the living eye, said wavefront sensor receiving a reflected point source image of the retina of said eye, comprising:
a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina and for creating an aerial image of the retinal point source;
sand lenslet array being configured such that it is capable of providing resolution for at least fifth order aberrations;
a camera located adjacent to said lenslet array for viewing said aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array; and a digital data processor connected to receive video output signals from said camera and for converting said video output signals to digital signals representative of said retinal point source aerial images, said digital data processor further calculating the wave aberrations of said eye so as to include at least third order modes, using said representative digital signals, such that improved vision results when said living eye utilizes said optical instrument.
a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina and for creating an aerial image of the retinal point source;
sand lenslet array being configured such that it is capable of providing resolution for at least fifth order aberrations;
a camera located adjacent to said lenslet array for viewing said aerial image of the retinal point source formed on each of said plurality of lenslets of said lenslet array; and a digital data processor connected to receive video output signals from said camera and for converting said video output signals to digital signals representative of said retinal point source aerial images, said digital data processor further calculating the wave aberrations of said eye so as to include at least third order modes, using said representative digital signals, such that improved vision results when said living eye utilizes said optical instrument.
23. A method for generating high resolution images of the retina of the living eye, comprising the steps of:
generating a reflected point source image of the retina of said living eye;
receiving said reflected point source image and for converting said point source image to corresponding digital signals;
calculating said at least third order wave aberrations using said digital signals;
illuminating a retinal disk on said living eye for producing a retinal disk image; and reflecting said retinal disk image on a compensating optical device, said compensating optical device being adjusted such that wavefront compensation for said wave aberrations is provided for said living eye.
generating a reflected point source image of the retina of said living eye;
receiving said reflected point source image and for converting said point source image to corresponding digital signals;
calculating said at least third order wave aberrations using said digital signals;
illuminating a retinal disk on said living eye for producing a retinal disk image; and reflecting said retinal disk image on a compensating optical device, said compensating optical device being adjusted such that wavefront compensation for said wave aberrations is provided for said living eye.
24. The method of claim 23, further including the step of polarizing said reflected point source image to remove stray light reflected from the cornea of said living eye prior to receiving said reflected point source image.
25. Apparatus for generating high resolution images of the retina of the living eye, comprising:
means for determining at least a third order wave aberration of said living eye and for generating a correction signal representative thereof;
a compensating optical device for reflecting an image of said retina and for receiving said correction signal, said compensating optical device being adjusted using said correction signal such that wavefront compensation far said at least third order wave aberration is provided for said living eye; and means for providing said high resolution image of said retina after its reflection by said compensating optical device.
means for determining at least a third order wave aberration of said living eye and for generating a correction signal representative thereof;
a compensating optical device for reflecting an image of said retina and for receiving said correction signal, said compensating optical device being adjusted using said correction signal such that wavefront compensation far said at least third order wave aberration is provided for said living eye; and means for providing said high resolution image of said retina after its reflection by said compensating optical device.
26. Apparatus for use in performing surgery on the retina of a living eye to correct for wave aberrations, comprising:
means for generating a reflected point source image of said retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating wave aberrations of the eye using said digital signals; and means for controlling a laser beam source, said means being connected to receive the calculated wave aberrations from said digital data processor for controlling the impingement of the laser from said laser beam source on said retina to provide wavefront compensation for said wave aberrations of said living eye.
means for generating a reflected point source image of said retina of said living eye;
means for receiving said reflected point source image and for converting said point source image to corresponding digital signals;
a digital data processor for calculating wave aberrations of the eye using said digital signals; and means for controlling a laser beam source, said means being connected to receive the calculated wave aberrations from said digital data processor for controlling the impingement of the laser from said laser beam source on said retina to provide wavefront compensation for said wave aberrations of said living eye.
27. The apparatus of claim 26, wherein said means for generating comprises a plurality of lenslets which form a lenslet array for receiving said reflected point source image of said retina.
28. The apparatus of claim 26, further including a polarizing filter through which said reflected point source image of said retina passes prior to being received by said means for receiving said reflected point source.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/772,977 US5777719A (en) | 1996-12-23 | 1996-12-23 | Method and apparatus for improving vision and the resolution of retinal images |
US08/772,977 | 1996-12-23 | ||
PCT/US1997/023863 WO1998027863A1 (en) | 1996-12-23 | 1997-12-23 | Apparatus for improving vision and resolution of retinal images |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2275762A1 true CA2275762A1 (en) | 1998-07-02 |
CA2275762C CA2275762C (en) | 2009-11-24 |
Family
ID=25096791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002275762A Expired - Lifetime CA2275762C (en) | 1996-12-23 | 1997-12-23 | Apparatus for improving vision and resolution of retinal images |
Country Status (9)
Country | Link |
---|---|
US (10) | US5777719A (en) |
EP (1) | EP0969760B1 (en) |
JP (1) | JP4105237B2 (en) |
CN (1) | CN1184926C (en) |
BR (1) | BR9714178B1 (en) |
CA (1) | CA2275762C (en) |
DE (1) | DE69739629D1 (en) |
HK (1) | HK1024157A1 (en) |
WO (1) | WO1998027863A1 (en) |
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1996
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-
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- 1997-12-23 EP EP97954229A patent/EP0969760B1/en not_active Expired - Lifetime
- 1997-12-23 BR BRPI9714178-0A patent/BR9714178B1/en not_active IP Right Cessation
- 1997-12-23 WO PCT/US1997/023863 patent/WO1998027863A1/en active IP Right Grant
- 1997-12-23 CA CA002275762A patent/CA2275762C/en not_active Expired - Lifetime
- 1997-12-23 DE DE69739629T patent/DE69739629D1/en not_active Expired - Lifetime
- 1997-12-23 CN CNB971815046A patent/CN1184926C/en not_active Expired - Fee Related
-
1998
- 1998-05-04 US US09/071,794 patent/US5949521A/en not_active Expired - Lifetime
-
1999
- 1999-07-02 US US09/346,309 patent/US6095651A/en not_active Expired - Lifetime
-
2000
- 2000-06-15 HK HK00103587A patent/HK1024157A1/en not_active IP Right Cessation
- 2000-07-28 US US09/628,690 patent/US6379005B1/en not_active Expired - Lifetime
-
2002
- 2002-02-20 US US10/078,163 patent/US6948818B2/en not_active Expired - Lifetime
-
2005
- 2005-08-09 US US11/199,174 patent/US7416305B2/en not_active Expired - Fee Related
-
2008
- 2008-06-24 US US12/145,265 patent/US20080316429A1/en not_active Abandoned
- 2008-06-24 US US12/145,345 patent/US20080259273A1/en not_active Abandoned
- 2008-06-24 US US12/145,264 patent/US20090002628A1/en not_active Abandoned
- 2008-06-24 US US12/145,302 patent/US20080251955A1/en not_active Abandoned
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US5777719A (en) | 1998-07-07 |
CN1184926C (en) | 2005-01-19 |
US5949521A (en) | 1999-09-07 |
US20060044510A1 (en) | 2006-03-02 |
EP0969760B1 (en) | 2009-10-21 |
US20080316429A1 (en) | 2008-12-25 |
US6948818B2 (en) | 2005-09-27 |
HK1024157A1 (en) | 2000-10-05 |
JP2001507258A (en) | 2001-06-05 |
US6379005B1 (en) | 2002-04-30 |
AU723645B2 (en) | 2000-08-31 |
BR9714178B1 (en) | 2009-01-13 |
US20080259273A1 (en) | 2008-10-23 |
BR9714178A (en) | 2000-02-29 |
DE69739629D1 (en) | 2009-12-03 |
AU5806298A (en) | 1998-07-17 |
US20080251955A1 (en) | 2008-10-16 |
CN1245406A (en) | 2000-02-23 |
JP4105237B2 (en) | 2008-06-25 |
US6095651A (en) | 2000-08-01 |
US7416305B2 (en) | 2008-08-26 |
EP0969760A1 (en) | 2000-01-12 |
US20030025874A1 (en) | 2003-02-06 |
CA2275762C (en) | 2009-11-24 |
WO1998027863A1 (en) | 1998-07-02 |
US20090002628A1 (en) | 2009-01-01 |
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