TITLE

Optic disc topography in normal Indian eyes using spectral domain optical coherence tomography

AUTHOR(S)
Mansoori, Tarannum; Viswanath, Kalluri; Balakrishna, Nagalla
PUB. DATE
January 2011
SOURCE
Indian Journal of Ophthalmology;Jan2011, Vol. 59 Issue 1, p23
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Purpose: The aim was to study optic nerve head (ONH) parameters in normal Indian eyes using spectral domain optical coherence tomography (OCT)/scanning laser ophthamoscope (SLO). Materials and Methods: One hundred and fifty-seven eyes of 157 normal subjects of various age groups underwent ONH imaging with spectral OCT/SLO and the parameters obtained were correlated with disc size. The effect of age, gender, and refractive error on various ONH parameters were also studied. Results: The mean optic disc area was 3.36 ± 0.64 mm² (range, 2.13-5.08 mm²), mean rim area was 2.49 ± 0.58 mm² (range, 1.20-3.62 mm²), and mean cup area was 1.10 ± 0.75 mm² (range, 0-3.07 mm²). The disc area showed significant positive correlation with the rim area, cup area, horizontal cup disc ratio, vertical cup disc ratio, cup disc area ratio, mean cup depth, and maximum cup depth (P < 0.001). Neither gender nor refractive error showed any significant difference in various ONH parameters. ONH parameters did not show significant change with age except for rim area which declined with the advancing age (r = -0.25, P < 0.001). Conclusions: The quantitative measurement of ONH topography obtained with this study provides a normative database for an Indian population with spectral OCT/SLO. As optic disc area influences ONH topography, disc size should to be considered when evaluating optic disc for progressive optic neuropathies such as glaucoma.
ACCESSION #
56681763

 

Related Articles

  • En face optical coherence tomography: a new method to analyse structural changes of the optic nerve head in rat glaucoma. Guo, L.; Tsatourian, V.; Luong, V.; Podolean, A. G.; Jackson, D. A.; Fitzke, F. W.; Cordeiro, M. F. // British Journal of Ophthalmology;Sep2005, Vol. 89 Issue 9, p1210 

    Aim: To investigate en face optical coherence tomography (eOCT) and its use as an effective objective technique for assessing changes in the glaucomatous rat optic nerve head (ONH) in vivo, and compare it with confocal scanning laser ophthalmoscopy (cSLO). Methods: 18 Dark Agouti (DA) rats with...

  • Clinical assessment of optic nerve disorders. Riordan-Eva, P. // Eye;Nov2004, Vol. 18 Issue 11, p1161 

    Optic nerve disorders range from the manifestations of life-threatening intracranial or systemic disease, to minor congenital anomalies. Careful clinical assessment, which relies upon a thorough evaluation of symptoms as well as signs, is essential for effective and timely investigation and...

  • Neuro-ophthalmology.  // Current Medical Literature: Ophthalmology;2003, Vol. 13 Issue 2, p53 

    Presents abstracts of studies about neuro-ophthalmology. 'Prognosis of Ischemic Internuclear Ophthalmoplegia,' by E. Eggenberger, K. Golnik, A. Lee, R. Santos, A. Suntay, B. Satana, M. Vapblades, C. Stevens, D. Kaufman, M. Wall, R. Kardon; 'Cause and Prognosis of Nontraumatic Sixth Nerve...

  • Retinal nerve fiber layer thickness in nonarteritic anterior ischemic optic neuropathy: OCT characterization of the acute and resolving phases. Costantino Bellusci; Giacomo Savini; Michele Carbonelli; Valerio Carelli; Alfredo Sadun; Piero Barboni // Graefe's Archive of Clinical & Experimental Ophthalmology;May2008, Vol. 246 Issue 5, p641 

    Abstract Background  To evaluate longitudinal changes in retinal nerve fiber layer (RNFL) thickness in patients with nonarteritic anterior ischemic optic neuropathy (NAION) using optical coherence tomography (OCT). Methods  Prospective, observational case...

  • A history of the optic nerve and its diseases. Reeves, C.; Taylor, D. // Eye;Nov2004, Vol. 18 Issue 11, p1096 

    We will trace the history of ideas about optic nerve anatomy and function in the Western world from the ancient Greeks to the early 20th century and show how these influenced causal theories of optic nerve diseases. Greek and Roman humoral physiology needed a hollow optic nerve, the obstruction...

  • Intraocular surgery for optic nerve disorders. Poulson, A. V.; Snead, D. R. J.; Jacobs, P. M.; Ahmad, N.; Snead, M. P. // Eye;Nov2004, Vol. 18 Issue 11, p1056 

    This article discusses two current indications for intraocular surgery for optic nerve conditions. The first topic is macular detachment in association with congenital optic disc pit, and includes a review of the theories of pathogenesis and management options including our own experience of...

  • Pupil assessment in optic nerve disorders. Bremner, F. D. // Eye;Nov2004, Vol. 18 Issue 11, p1175 

    BACKGROUND:The normal pupillary constriction to light is an involuntary reflex that can be easily elicited and observed without specialized equipment or discomfort to the patient. Attenuation of this reflex in optic nerve disorders was first described 120 years ago. Since then, pupil examination...

  • Optic nerve disorders: role of canal and nerve sheath decompression surgery. Acheson, J. F. // Eye;Nov2004, Vol. 18 Issue 11, p1169 

    Optic nerve sheath decompression (ONSD) maintains a role in the management of visual loss complicating papilloedema in selected patients primarily with idiopathic intracranial hypertension. The evidence base for this intervention is reviewed and audit data on visual outcomes for patients with...

  • Congenital disorders of the optic nerve: excavations and hypoplasia. Dutton, G. N. // Eye;Nov2004, Vol. 18 Issue 11, p1038 

    The principal congenital abnormalities of the optic disc that can significantly impair visual function are excavation of the optic disc and optic nerve hypoplasia. The excavated optic disc abnormalities comprise optic disc coloboma, morning glory syndrome, and peripapillary staphyloma. Optic...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics