Macular Dystrophy Workup

  • Author: Natalie Afshari, MD, MA, FACS; Chief Editor: Hampton Roy Sr, MD   more...
 
Updated: Jan 26, 2010
 

Procedures

  • A corneal biopsy sample, which is not clinically indicated, reveals deposits of glycosaminoglycans, which stain with Alcian blue and colloidal iron.
  • Light microscopy reveals glycosaminoglycan deposits within stromal keratocytes.
Next

Histologic Findings

  • Deposits in macular dystrophy are composed of glycosaminoglycans, which stain with Alcian blue and colloidal iron.
  • Light microscopy demonstrates glycosaminoglycan deposits within stromal keratocytes.
  • Two types of macular dystrophy are noted based on the absence or presence of keratan sulfate within the corneal stroma. Type I macular dystrophy has an absence of keratan sulfate, whereas in type II, keratan sulfate is present.
Previous
Proceed to Treatment & Management
 
 
Contributor Information and Disclosures
Author

Natalie Afshari, MD, MA, FACS  Associate Professor of Ophthalmology, Duke University Eye Center, Duke University Medical Center

Natalie Afshari, MD, MA, FACS is a member of the following medical societies: American Academy of Ophthalmology, American College of Surgeons, American Medical Association, American Society of Cataract and Refractive Surgery, and Association for Research in Vision and Ophthalmology

Disclosure: Nothing to disclose.

Coauthor(s)

William B Trattler, MD  Ophthalmologist, The Center for Excellence in Eye Care; Volunteer Assistant Professor of Ophthalmology, Bascom Palmer Eye Institute

William B Trattler, MD is a member of the following medical societies: American Academy of Ophthalmology and American Society of Cataract and Refractive Surgery

Disclosure: Allergan Consulting fee Consulting; Alcon Consulting fee Consulting; Inspire Consulting fee Consulting; Abbott Medical Optics Consulting fee Consulting

William Lloyd Clark, MD  Consulting Staff, Palmetto Retina

William Lloyd Clark, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Ophthalmology, and Association for Research in Vision and Ophthalmology

Disclosure: Nothing to disclose.

Specialty Editor Board

Fernando H Murillo-Lopez, MD  Senior Surgeon, Unidad Privada de Oftalmologia CEMES

Fernando H Murillo-Lopez, MD is a member of the following medical societies: American Academy of Ophthalmology

Disclosure: Nothing to disclose.

Simon K Law, MD, PharmD  Associate Professor of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles, David Geffen School of Medicine

Simon K Law, MD, PharmD is a member of the following medical societies: American Academy of Ophthalmology, American Glaucoma Society, and Association for Research in Vision and Ophthalmology

Disclosure: Nothing to disclose.

Christopher J Rapuano, MD  Professor, Department of Ophthalmology, Jefferson Medical College of Thomas Jefferson University; Director of the Cornea Service, Co-Director of Refractive Surgery Department, Wills Eye Institute

Christopher J Rapuano, MD is a member of the following medical societies: American Academy of Ophthalmology, American Society of Cataract and Refractive Surgery, Contact Lens Association of Ophthalmologists, Cornea Society, Eye Bank Association of America, International Society of Refractive Surgery, and Pan-American Association of Ophthalmology

Disclosure: Allergan Honoraria Speaking and teaching; Allergan Consulting fee Consulting; Alcon Honoraria Speaking and teaching; Inspire Honoraria Speaking and teaching; RPS Ownership interest Other; Vistakon Honoraria Speaking and teaching; EyeGate Pharma Consulting; Inspire Consulting fee Consulting; Bausch & Lomb Honoraria Speaking and teaching; Bausch & Lomb Consulting fee Consulting

Lance L Brown, OD, MD  Ophthalmologist, Affiliated With Freeman Hospital and St John's Hospital, Regional Eye Center, Joplin, Missouri

Disclosure: Nothing to disclose.

Chief Editor

Hampton Roy Sr, MD  Associate Clinical Professor, Department of Ophthalmology, University of Arkansas for Medical Sciences

Hampton Roy Sr, MD is a member of the following medical societies: American Academy of Ophthalmology, American College of Surgeons, and Pan-American Association of Ophthalmology

Disclosure: Nothing to disclose.

References

  1. Kannabiran C. Genetics of corneal endothelial dystrophies. J Genet. Dec 2009;88(4):487-94. [Medline].

  2. Quantock AJ, Young RD, Akama TO. Structural and biochemical aspects of keratan sulphate in the cornea. Cell Mol Life Sci. Dec 27 2009;[Medline].

  3. Al-Swailem SA, Al-Rajhi AA, Wagoner MD. Penetrating keratoplasty for macular corneal dystrophy. Ophthalmology. Feb 2005;112(2):220-4. [Medline].

  4. Albert D, Jakobiec F. Principles and Practice of Ophthalmology. Vol 1. 1996:26-49.

  5. Edward DP, Yue BY, Sugar J, et al. Heterogeneity in macular corneal dystrophy. Arch Ophthalmol. Nov 1988;106(11):1579-83. [Medline].

  6. Hafner A, Langenbucher A, Seitz B. Long-term results of phototherapeutic keratectomy with 193-nm excimer laser for macular corneal dystrophy. Am J Ophthalmol. Sep 2005;140(3):392-6. [Medline].

  7. Klintworth GK, Meyer R, Dennis R, et al. Macular corneal dystrophy. Lack of keratan sulfate in serum and cornea. Ophthalmic Paediatr Genet. Dec 1986;7(3):139-43. [Medline].

  8. Krachmer J. Cornea. Vol 2. 1996.

  9. Wirtitsch MG, Ergun E, Hermann B. Ultrahigh resolution optical coherence tomography in macular dystrophy. Am J Ophthalmol. Dec 2005;140(6):976-983. [Medline].

 
Previous
Next
 
Macular dystrophy. Image courtesy of James J. Reidy, MD, FACS, Associate Professor of Ophthalmology, State University of New York, School of Medicine & Biomedical Sciences, Buffalo, New York.
Macular dystrophy.
 
 
 
All material on this website is protected by copyright, Copyright © 1994-2012 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

DISCLAIMER: The content of this Website is not influenced by sponsors. The site is designed primarily for use by qualified physicians and other medical professionals. The information contained herein should NOT be used as a substitute for the advice of an appropriately qualified and licensed physician or other health care provider. The information provided here is for educational and informational purposes only. In no way should it be considered as offering medical advice. Please check with a physician if you suspect you are ill.