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Optics confidential
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- February 26, 2009
- 12:00 AM
- 1,616 views
Eyes are not centered optical systems...
by Pablo Artal in Optics confidential
The different optical components of the eye, the cornea and the crystalline lens are not properly aligned with the area of the retina (the fovea) providing the highest spatial resolution. Some information on this issue and a description of a new instrument to measure eye misalgnment is presented...... Read more »
J. Tabernero, A. Benito, V. Nourrit, and P. Artal. (2006) Instrument for measuring the misalignments of ocular surfaces. Optics Express, 10945-10956.
- January 7, 2009
- 12:00 AM
- 1,377 views
A simple description of the eye: structure and optical function
by Pablo Artal in Optics confidential
An easy description of the human eye: structure and optical functioning... Read more »
P. Artal, A. Benito, J. Tabernero. (2006) The human eye is an example of robust optical design. Journal of Vision, 1-7.
- October 22, 2008
- 12:00 AM
- 1,336 views
Lecture on the eye as a robust optical system
by Pablo Artal in Optics confidential
A lecture describing in detail the optical properties of the eye given at the international Visual Optics School in Crete last summer. Useful to better understand the article in "Nature Photonics" ... Read more »
Artal P. . (2008) The eye's aplanatic answer. Nature Photon., 2(10), 586.
- November 25, 2008
- 12:00 AM
- 1,317 views
Neural adaptation to the eye optics
by Pablo Artal in Optics confidential
The visual system could be adapted to the particular optical properties of each person's eyes. An experiment using an adaptive optics visual simulator was used to demonstrate this hypothesis. Some details of the experiment and the impact of the finding are discussed...
... Read more »
Pablo Artal, Li Chen, Enrique J. Fernández, Ben Singer,Silvestre Manzanera,David R. Williams. (2004) Neural compensation for the eye's optical aberrations. Journal of Vision, 4(4), 281-287. DOI: 10.1167/4.4.4
- February 1, 2009
- 12:00 AM
- 1,293 views
Aspheric intraocular lenses: mimicking the young eye
by Pablo Artal in Optics confidential
Aspheric intraocular lenses provide cataract patients with better quality of vision. The history of how these lenses were developed trying to copy the optical properties of young eyes is described ... Read more »
P. Artal, E. Berrio, A. Guirao, P. Piers. (2002) Contribution of the cornea and internal surfaces to the change of ocular aberrations with age. J.Opt.Soc.Am.A., 137.
- June 2, 2009
- 04:58 PM
- 1,224 views
Plagiarism... what can be done? simply suffer it?
by Pablo Artal in Optics confidential
Some comments on the impact of plagiarism on science. How affect scientists; what can we do as scientists and more... (ah! and some recommendations on restaurants too).... Read more »
P.Artal, S. Marcos, R. Navarro, D. R. Williams. (1995) Odd aberrations and double-pass measurements of retinal image quality. J. Opt. Soc. Am. A, 195.
- October 29, 2008
- 12:00 AM
- 1,223 views
To be cited or not to be cited
by Pablo Artal in Optics confidential
Citations etiquette is a very important part of scientific research. Some comments on the topic and a practical example of one of my early papers where I first describe how to simulate retinal images of any object in real eyes for different conditions. The approach was widely used later but the paper poorly cited...... Read more »
P. Artal. (1990) Calculations of two-dimensional foveal retinal images in real eyes. J.Opt.Soc.Am.A., 1374-1381.
- October 6, 2008
- 12:00 AM
- 1,193 views
Optics of the human eye in subjects with natural supervision
by Pablo Artal in Optics confidential
The optics of the human eye impose the first limit to vision. We studied the eye's optics in a group of subjects having natural supervision, that is to say, excellent visual acuity. We discovered that having a superior visual acuity does not require an excellent optical quality of the eye...... Read more »
E. A. Villegas, E. Alcon, and P. Artal. (2008) Optical Quality of the Eye in Subjects with Normal and Excellent Visual Acuity. Invest. Ophthalmol. Vis. Sci., 49(10), 4688-4696.
- December 9, 2008
- 12:00 AM
- 1,187 views
Myopia research: some news
by Pablo Artal in Optics confidential
Some of the new advances in myopia research presented in a recent meeting is revised. In particular, I cover the differences in the optical properties of the myopic eye in the peripheral retina and the future potential optical approaches to control myopia development based in these findings.... Read more »
Seidemann et al. (2002) Peripheral refractive errors in myopic, emmetropic, and hyperopic young subjects. J. Opt. Soc. Am. A, 2363.
- March 17, 2009
- 05:00 AM
- 1,170 views
Exploring the eye with invisible light
by Pablo Artal in Optics confidential
On how invisible infrared light can be used as a tool to study the optics of the human eye...... Read more »
Fernández, E., & Artal, P. (2008) Ocular aberrations up to the infrared range: from 6328 to 1070 nm. Optics Express, 16(26), 21199. DOI: 10.1364/OE.16.021199
- April 15, 2009
- 07:35 AM
- 1,160 views
Light adjustable intraocular lenses: the future is here
by Pablo Artal in Optics confidential
A new type of light adjustable intraocular lenses promises patients to be spectacles-free after cataract surgery. See a description of these new lenses and how the optical results after sugery were controlled using a Hartmann-Shack wavefront sensor based refraction approach...... Read more »
P. M. Prieto, F. Vargas-Martín, S. Goelz, P. Artal. (2000) Analysis of the performance of the Hartmann-Shack sensor in the human eye. J. Opt. Soc. Am. A, 1388.
- October 2, 2008
- 12:00 AM
- 1,109 views
The eye's aplanatic answer
by Pablo Artal in Optics confidential
Commentary article summarizing some of our recent advances in the understating of the optical properties of the human eye.... Read more »
Artal, P. . (2008) The eye’s aplanatic answer. Nature Photon., 586-589.
- February 9, 2009
- 12:00 AM
- 1,087 views
Adaptive optics... a technology for everything
by Pablo Artal in Optics confidential
Adaptive optics is a technology to obtaing better images. Initially applied in large telescopes, moved to the eye and now is expanding to a large range of interesting applications...... Read more »
E. J. Fernández, I. Iglesias, P.Artal,. (2001) Closed-loop adaptive optics in the human eye . Opt. Lett., 746-748.
- June 24, 2009
- 05:00 AM
- 1,084 views
Should you attend so many meetings?
by Pablo Artal in Optics confidential
Why scientific meetings are important for a career and some comments on a recent meeting on adaptive optics in Russia...... Read more »
F. Vargas-Martín, P. M. Prieto, P.Artal. (1998) Correction of the aberrations in the human eye with a liquid crystal spatial light modulator: Limits to the performance. J.Opt.Soc.Am.A., 2552.
- March 31, 2009
- 05:00 AM
- 1,079 views
Scatter and spherical aberration: a good marriage in the eye?
by Pablo Artal in Optics confidential
A (relatively) simple description of a new recent finding in the optics of the human eye: the compensatory effect of spherical aberration and scatter...... Read more »
Guillermo M. Pérez,Silvestre Manzanera . (2009) Impact of scattering and spherical aberration in contrast sensitivity. Journal of Vision, 9(3), 1-10. DOI: http://www.journalofvision.org/9/3/19/
- May 19, 2009
- 06:37 AM
- 948 views
Ultrafast lasers to see the eye
by Pablo Artal in Optics confidential
The use of ultrafast (femtosecond) lasers as a tool to see (image) the eye structures is reviewed. In particular, how multiphoton microscopes can be improved by aberration correction and how impressive images from ocular tissues could help diagnosis and treatment of eye's diseases... ... Read more »
Bueno, J., Vohnsen, B., Roso, L., & Artal, P. (2009) Temporal wavefront stability of an ultrafast high-power laser beam. Applied Optics, 48(4), 770. DOI: 10.1364/AO.48.000770
- August 30, 2009
- 06:11 PM
- 945 views
Binocular adaptive optics visual simulator: the future of visual testing
by Pablo Artal in Optics confidential
A recently developed adaptive optics instrument for the two eyes is described. The way on how eventually this system may change the traditional and old fashioned way of testing vision and prescribing spectacles is discussed...... Read more »
Fernández, E., Prieto, P., & Artal, P. (2009) Binocular adaptive optics visual simulator. Optics Letters, 34(17), 2628. DOI: 10.1364/OL.34.002628
- August 4, 2009
- 05:00 PM
- 943 views
Can myopia progression be controlled?
by Pablo Artal in Optics confidential
Myopia is a refractive condition that eventually could be controlled by spectacles designed to change the optics in the periphery of the retina. Some of the new results on this exciting topic are described...... Read more »
Linda Lundström,Alejandro Mira-Agudelo,, & Pablo Artal. (2009) Peripheral optical errors and their change with accommodation differ between emmetropic and myopic eyes. Journal of Vision, 9(6), 1-11. info:/
- March 12, 2010
- 12:00 PM
- 882 views
The (empirical) rule of 8%
by Pablo Artal in Optics confidential
Some advice on how to deal with students and postdocs...... Read more »
Perez, G., Archer, S., & Artal, P. (2009) Optical Characterization of Bangerter Foils. Investigative Ophthalmology , 51(1), 609-613. DOI: 10.1167/iovs.09-3726
- September 29, 2009
- 06:02 AM
- 877 views
How we see? How they see? Simulation of vision in myopia, catract, supervision...
by Pablo Artal in Optics confidential
Short lecture of Pablo Artal, professor of Optics at the University of Murcia in Spain on how different persons see the world. Based in the use of a unique research tool: the adaptive optics visual simulator. Learn how a myopic person sees, or a person with cataract or how a lucky individual with "supervision" can read letters at great distance!... Read more »
E. J. Fernández, S. Manzanera, P. Piers, P. Artal. (2002) Adaptive optics visual simulator. J. Refract. Surg. info:/
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