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Friday, August 7, 2020 | History

3 edition of Irregular astigmatism found in the catalog.

Irregular astigmatism

Irregular astigmatism

diagnosis and treatment

  • 134 Want to read
  • 24 Currently reading

Published by SLACK in Thorofare, NJ .
Written in English

    Subjects:
  • Astigmatism -- Diagnosis.,
  • Astigmatism -- Treatment.,
  • Astigmatism -- therapy.,
  • Astigmatism -- diagnosis.,
  • Astigmatism -- etiology.,
  • Cornea -- surgery.,
  • Ophthalmologic Surgical Procedures -- contraindications.

  • Edition Notes

    Includes bibliographical references and index.

    Statementeditor Ming Wang ; co-editor, Tracy Schroeder Swartz.
    ContributionsWang, Ming X., 1960-, Swartz, Tracy Schroeder.
    Classifications
    LC ClassificationsRE932 .I77 2008
    The Physical Object
    Paginationxix, 295 p. :
    Number of Pages295
    ID Numbers
    Open LibraryOL18818273M
    ISBN 101556428391
    ISBN 109781556428395
    LC Control Number2007035173

    Pages with "irregular" in the title are: irregular menstrual bleeding: irregular periods: irregular ECG rhythm: irregulary irregular pulse: regularly irregular pulse: astigmatism (irregular) irregular bleeding whilst using hormonal contraception: Pages with "periods" in the title are: absence of periods: heavy periods: incubation periods. Irregular astigmatism is when the curvature varies in different parts of the same meridian. Lenticular astigmatism comes from the crystalline lens. Astigmatism can occur by itself and with other refractive errors like myopia, hyperopia and presbyopia. f. Presbyopia arises at about 40 years of age and blurry near vision occurs.

      Irregular astigmatism; diagnosis and treatment. Ed. by Ming Wang. Slack Inc. pages $ Hardcover RE Irregular astigmatism is a topic of rising importance in ophthalmology. The disease is new; it is a largely human-created and difficult-to-treat complication of LASIK and PRK surgery. There are two kinds of astigmatism, regular and irregular. The regular kind occurs at a particular angle and can be corrected with a cylindrical lens ground into glasses or smoothed with Natural Vision activities. Irregular astigmatism is usually due to a disease condition or an accident. Glasses cannot satisfactorily correct it.

    Astigmatism usually occurs when the front surface of the eye, the cornea, has an irregular curvature. Normally the cornea is smooth and equally curved in all directions and light entering the cornea is focused equally on all planes, or in all directions. In astigmatism, the cornea is curved more in one direction than in the other. At Total Eye Care, Dr. Driscoll has used scleral contact lenses to treat many conditions such as irregular astigmatism, keratoconus, high myopia, dry eye syndrome, and complications related to LASIK and PRK. Because of their size, sclerals are quite comfortable. Patients often report the comfort being similar to that of a soft contact lens.


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Irregular astigmatism Download PDF EPUB FB2

"Irregular astigmatism remains a significant challenge in the daily practice of the corneal/refractive surgeon. In the book, Irregular Astigmatism: Diagnosis and Treatment, Editor Ming Wang has compiled a comprehensive offering regarding the current state of our knowledge in this challenging book is comprehensive and well written, deserving the attention of all Cited by: 9.

Since the advent of keratorefractive surgery and its rising popularity, irregular astigmatism has become an increasingly important issue for ophthalmologists and optometrists. Despite the success of LASIK and PRK, there are more and more patients experiencing visual quality problems due to the non-physiological modification of the corneal s: 1.

Among these complications, irregular astigmatism is perhaps the most difficult to treat. The first of its kind, Irregular Astigmatism: Diagnosis and Treatment synthesizes our knowledge and understanding of irregular astigmatism and addresses state-of-the-art technology in management and treatment.

In the Preface of this book Dr. Wang makes a compelling case for the importance of this topic. He prepares the table for the reader by highlighting the common causes of this condition and defines the boundaries of current research related to the diagnosis and treatment of irregular astigmatism.

The aim of this book is to serve as clinical reference and to provide guidelines for those ophthalmologists, who have to deal with irregular astigmatism patients.

The textbook is divided into two major sections focusing on the basic principles, diagnostic procedures and the different options for the treatment of irregular : Alio. Get this from a library. Irregular astigmatism: diagnosis and treatment.

[Ming X Wang; Tracy Schroeder Swartz;] -- Since the advent of keratorefractive surgery and its rising popularity, irregular astigmatism Irregular astigmatism book become an increasingly important issue for ophthalmologists and optometrists. Despite the Irregular astigmatism book of.

The matrix (0 1 −1 0) expresses irregular astigmatism of a unique amount (̸ =) given in (8) on an irregular anterior cornea confirmed from the eigenvectors belonging to A.

Astigmatism, whether it is regular or irregular, is caused by some combination of external (corneal surface) and internal (posterior corneal surface, human lens, fluids, retina, and eye-brain interface) optical properties.

In some people, the external optics may have the greater influence, and in other people, the internal optics may Complications: Amblyopia.

Astigmatism is the irregular curvature of one’s eye (specifically, the cornea). With astigmatism the eyes have more of a football shape as opposed to a round shape.

Due to the irregular shape of the eye, light is prevented from entering it at proper angles and thus it is unable to focus properly. The aim of this book is to serve as clinical reference and to provide guidelines for those ophthalmologists, who have to deal with irregular astigmatism patients.

The textbook is divided into two major sections focusing on the basic principles, diagnostic procedures and the different options for the treatment of irregular : Hardcover. Contact Lens Correction of Regular and Irregular Astigmatism. By Raul Martín Herranz, Guadalupe Rodríguez Zarzuelo and Victoria de Juan Herráez.

Submitted: October 31st Reviewed: March 31st Published: February 29th DOI: /Cited by: 2. Astigmatism could be prevalent at birth or could be a result of trauma, congenital conditions or eye surgery. The condition can be very annoying as it makes a simple task like reading a book complicated.

However, there are natural ways to treat astigmatism and one of them is eye exercises. Benefits of Eye Exercises for Astigmatism. Irregular astigmatism is defined in a variety of ways.3,14,15 A subjective characteristic of irregular astigmatism is the induction of increased glare, induced regular astigmatism which often Cited by: Irregular Astigmatism: Diagnosis and Treatment is intended to help prevent and reduce the iatrogenic creation of irregular astigmatism, as well as provide effective treatment when postoperative complications do arise.

With the maturation of keratorefractive technology in recent years, effective treatment for iatrogenic irregular astigmatism is. "Irregular astigmatism remains a significant challenge in the daily practice of the corneal/refractive surgeon.

In the book Irregular Astigmatism: Diagnosis and Treatment, Editor Ming Wang has compiled a comprehensive offering regarding the current state of our knowledge in this challenging area.

Induced astigmatism and surgical correction of astigmatism are extensively addressed in other chapters of this book. Manifest astigmatism is the vectorial sum of anterior corneal toricity and. The surgical correction of astigmatism is the last frontier to optimizing visual outcomes for patients.

Practical Astigmatism: Planning and Analysis is a comprehensive guide to correcting. Irregular astigmatism In irregular astigmatisms, the meridians having the maximum and minimum refractive power are separated by an angle other than 90°.

In these cases, the principal meridians are not perpendicular to one another. Furthermore, an irregular astigmatism is. Astigmatism. Astigmatism usually is the result of irregularities in the radius of curvature of the cornea. Astigmatism is not a pathologic state, but rather a variation in anatomy; most people have some degree of astigmatism.

Trauma to the cornea can cause alteration of structure, leading to irregular astigmatism. Astigmatism is also classified as regular or irregular. In regular astigmatism, the principal meridians are 90 degrees apart (perpendicular to each other).

In irregular astigmatism, the principal meridians are not perpendicular. For most, the condition is regular corneal astigmatism, which gives the front surface of the eye an oval shape.

Irregular astigmatism is a condition of the eye that cannot be corrected by glasses or normal contacts lenses. It generally occurs after pterygium surgery, in corneal diseases such as keratoconus or after corneal transplants such as penetrating keratoplasty. Irregular astigmatism is Location: Level 4, Melbourne Street South Brisbane, QLD, Australia.Astigmatism Definition, Etiology, Classification, Diagnosis and Non-Surgical Treatment Dieudonne Kaimbo Wa Kaimbo Department of Ophthalmolog y, University of Kinshasa, DR Congo 1.

Introduction Definition Astigmatism (from the Greek .Astigmatism - Optics, Physiology and Management. Edited by: Michael Goggin. ISBNPDF ISBNPublished Cited by: 4.