Astigmatism (optical systems) (English Wikipedia)

"Contact Lenses for Vision Correction". American Academy of Ophthalmology. 2018-09-01. Retrieved 2019-05-06.
"Eyeglasses for Vision Correction". American Academy of Ophthalmology. 2015-12-12. Retrieved 2019-05-06.

books.google.com (Global: 3^rd place; English: 3^rd place)

Frederic Eugene Wright (1911). The Methods of Petrographic-microscopic Research, Their Relative Accuracy and Range of Application. Carnegie institution of Washington.

doi.org (Global: 2^nd place; English: 2^nd place)

Kleinstein RN, Jones LA, Hullett S, Kwon S, et al. (2003). "Refractive Error and Ethnicity in Children". Arch. Ophthalmol. 121 (8): 1141–47. doi:10.1001/archopht.121.8.1141. PMID 12912692.
Garcia CA, Oréfice F, Nobre GF, Souza Dde B, Rocha ML, Vianna RN (2005). "[Prevalence of refractive errors in students in Northeastern Brazil.]". Arq Bras Oftalmol (in Portuguese). 68 (3): 321–25. doi:10.1590/S0004-27492005000300009. PMID 16059562.
Bourne RR, Dineen BP, Ali SM, Noorul Huq DM, Johnson GJ (June 2004). "Prevalence of refractive error in Bangladeshi adults: results of the National Blindness and Low Vision Survey of Bangladesh". Ophthalmology. 111 (6): 1150–60. doi:10.1016/j.ophtha.2003.09.046. PMID 15177965.
Asano K, Nomura H, Iwano M, et al. (2005). "Relationship between astigmatism and aging in middle-aged and elderly Japanese". Jpn. J. Ophthalmol. 49 (2): 127–33. doi:10.1007/s10384-004-0152-1. PMID 15838729. S2CID 20925765.
Del Priore LV, Guyton DL (November 1986). "The Jackson cross cylinder. A reappraisal". Ophthalmology. 93 (11): 1461–65. doi:10.1016/s0161-6420(86)33545-0. PMID 3808608.
Huang, Bo (Feb 8, 2008). "Three-dimensional Super-resolution Imaging by Stochastic Optical Reconstruction Microscopy". Science. 319 (5864): 810–13. Bibcode:2008Sci...319..810H. doi:10.1126/science.1153529. PMC 2633023. PMID 18174397.

emedicine.com (Global: 3,595^th place; English: 3,333^rd place)

Emedicine.com Archived February 18, 2006, at the Wayback Machine

etymonline.com (Global: 287^th place; English: 321^st place)

Harper, Douglas (2001). "Online Etymology Dictionary". Retrieved 2007-12-29.

eyetopics.com (Global: low place; English: low place)

www.eyetopics.com article. Archived on 2006-01-10.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Huang, Bo (Feb 8, 2008). "Three-dimensional Super-resolution Imaging by Stochastic Optical Reconstruction Microscopy". Science. 319 (5864): 810–13. Bibcode:2008Sci...319..810H. doi:10.1126/science.1153529. PMC 2633023. PMID 18174397.

hipusa.com (Global: low place; English: low place)

Astigmatism: symptoms Hipusa.com. Archived May 1, 2006, at the Wayback Machine
Astigmatism: treatment Hipusa.com. Archived April 26, 2006, at the Wayback Machine

irishtimes.com (Global: 266^th place; English: 182^nd place)

"Astigmatism Laser Eye Surgery". The Irish Times. Archived from the original on 2012-10-24. Retrieved 2011-08-29.

mayoclinic.org (Global: 1,610^th place; English: 1,279^th place)

"LASIK eye surgery". Mayo Clinic. Retrieved 2019-05-06.

medicinenet.com (Global: 3,840^th place; English: 3,358^th place)

Andrew A. Dahl, ed. Melissa Conrad Stöppler. MedicineNet.com Astigmatism: overview (29/11/2023).

nih.gov (Global: 4^th place; English: 4^th place)

pubmed.ncbi.nlm.nih.gov

Kleinstein RN, Jones LA, Hullett S, Kwon S, et al. (2003). "Refractive Error and Ethnicity in Children". Arch. Ophthalmol. 121 (8): 1141–47. doi:10.1001/archopht.121.8.1141. PMID 12912692.
Garcia CA, Oréfice F, Nobre GF, Souza Dde B, Rocha ML, Vianna RN (2005). "[Prevalence of refractive errors in students in Northeastern Brazil.]". Arq Bras Oftalmol (in Portuguese). 68 (3): 321–25. doi:10.1590/S0004-27492005000300009. PMID 16059562.
Bourne RR, Dineen BP, Ali SM, Noorul Huq DM, Johnson GJ (June 2004). "Prevalence of refractive error in Bangladeshi adults: results of the National Blindness and Low Vision Survey of Bangladesh". Ophthalmology. 111 (6): 1150–60. doi:10.1016/j.ophtha.2003.09.046. PMID 15177965.
Asano K, Nomura H, Iwano M, et al. (2005). "Relationship between astigmatism and aging in middle-aged and elderly Japanese". Jpn. J. Ophthalmol. 49 (2): 127–33. doi:10.1007/s10384-004-0152-1. PMID 15838729. S2CID 20925765.
Graff T (June 1962). "Control of the determination of astigmatism with the Jackson cross cylinder". Klin Monatsblätter Augenheilkd Augenarztl Fortbild (in German). 140: 702–08. PMID 13900989.
Del Priore LV, Guyton DL (November 1986). "The Jackson cross cylinder. A reappraisal". Ophthalmology. 93 (11): 1461–65. doi:10.1016/s0161-6420(86)33545-0. PMID 3808608.
Brookman KE (May 1993). "The Jackson crossed cylinder: historical perspective". J Am Optom Assoc. 64 (5): 329–31. PMID 8320415.
Huang, Bo (Feb 8, 2008). "Three-dimensional Super-resolution Imaging by Stochastic Optical Reconstruction Microscopy". Science. 319 (5864): 810–13. Bibcode:2008Sci...319..810H. doi:10.1126/science.1153529. PMC 2633023. PMID 18174397.

nei.nih.gov

"Facts About Astigmatism | National Eye Institute". nei.nih.gov. Archived from the original on 2016-10-02. Retrieved 2019-05-06.

ncbi.nlm.nih.gov

Huang, Bo (Feb 8, 2008). "Three-dimensional Super-resolution Imaging by Stochastic Optical Reconstruction Microscopy". Science. 319 (5864): 810–13. Bibcode:2008Sci...319..810H. doi:10.1126/science.1153529. PMC 2633023. PMID 18174397.

nova.edu (Global: low place; English: low place)

"Introduction to Refraction". www.nova.edu. Archived from the original on 1999-09-10.

quantumoptical.com (Global: low place; English: low place)

Quantumoptical.com

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Asano K, Nomura H, Iwano M, et al. (2005). "Relationship between astigmatism and aging in middle-aged and elderly Japanese". Jpn. J. Ophthalmol. 49 (2): 127–33. doi:10.1007/s10384-004-0152-1. PMID 15838729. S2CID 20925765.

stlukeseye.com (Global: low place; English: low place)

Keratometry stLukeseye.com. Archived March 23, 2006, at the Wayback Machine

telescope-optics.net (Global: low place; English: low place)

Sacek, Vladimir (July 14, 2006). "Telescope astigmatism". Amateur Telescope Optics. Archived from the original on 19 September 2008. Retrieved Oct 16, 2008.

web.archive.org (Global: 1^st place; English: 1^st place)

Sacek, Vladimir (July 14, 2006). "Telescope astigmatism". Amateur Telescope Optics. Archived from the original on 19 September 2008. Retrieved Oct 16, 2008.
"Facts About Astigmatism | National Eye Institute". nei.nih.gov. Archived from the original on 2016-10-02. Retrieved 2019-05-06.
"Astigmatism Laser Eye Surgery". The Irish Times. Archived from the original on 2012-10-24. Retrieved 2011-08-29.
www.eyetopics.com article. Archived on 2006-01-10.
Astigmatism: symptoms Hipusa.com. Archived May 1, 2006, at the Wayback Machine
Astigmatism: treatment Hipusa.com. Archived April 26, 2006, at the Wayback Machine
Keratometry stLukeseye.com. Archived March 23, 2006, at the Wayback Machine
Emedicine.com Archived February 18, 2006, at the Wayback Machine
"Introduction to Refraction". www.nova.edu. Archived from the original on 1999-09-10.

Astigmatism (optical systems) (English Wikipedia)

aao.org (Global: low place; English: 7,618th place)

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doi.org (Global: 2nd place; English: 2nd place)

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eyetopics.com (Global: low place; English: low place)

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nei.nih.gov

ncbi.nlm.nih.gov

nova.edu (Global: low place; English: low place)

quantumoptical.com (Global: low place; English: low place)

semanticscholar.org (Global: 11th place; English: 8th place)

api.semanticscholar.org

stlukeseye.com (Global: low place; English: low place)

telescope-optics.net (Global: low place; English: low place)

web.archive.org (Global: 1st place; English: 1st place)

aao.org (Global: low place; English: 7,618^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

doi.org (Global: 2^nd place; English: 2^nd place)

emedicine.com (Global: 3,595^th place; English: 3,333^rd place)

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harvard.edu (Global: 18^th place; English: 17^th place)

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medicinenet.com (Global: 3,840^th place; English: 3,358^th place)

nih.gov (Global: 4^th place; English: 4^th place)

semanticscholar.org (Global: 11^th place; English: 8^th place)

web.archive.org (Global: 1^st place; English: 1^st place)