| Large optic nerve heads: megalopapilla or megalodiscs. | |
| | |
MedLine Citation:
|
PMID: 11944849 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To evaluate megalopapillas in order to determine whether they constitute a different population, according to their specific features. MATERIAL: Evaluation of the optic nerve head of 405 eyes divided into 172 normal eyes, 168 pre-perimetric glaucomas (phase 3 or 4), 30 primary congenital glaucomas (children with pure congenital glaucomas operated more than once and diagnosed within the first year of age), and 35 megalopapillas. METHOD: The examinations were performed with the HRT (Heidelberg Retina Tomograph), using a wavelength of 680 nm and the new standard reference plane. Each examination results from the mean of 3 image acquisitions with a SD lower than n = 20. Each optic nerve head was studied in 360 degrees (segments), as well as in quadrants and octants separately (predefined segments). The visual fields were assessed with either the Octopus 1-2-3 or the Octopus 101, programs G2 and G2x (three complete phases). The intraocular pressure was measured by means of daily pressure curves including 7 measurements with applanation tonometry at the office and the first one at 6/7 a.m. with the patient still in bed. Gonioscopic examinations were also performed for classification purposes. RESULTS: By comparing all the stereometric parameters with the Total Area (disc area) and the Rim Volume it has been concluded that the megalopapilla group is different from both the normal control group and the glaucoma group. The disc area of the congenital glaucomas was not statistically different from the megalopapillas, but it was in terms of rim volume and other parameters. CONCLUSION: megalopapilla is an entity characterized by a large optic nerve head which may appear abnormal, with an increased cup, but associated with a normal rim volume, normal visual field and normal IOP. Special attention should be given to its differentiation from pseudoglaucomatous diseases. DISCUSSION: The frequency of megalopapillas seems to be quite higher than in congenital optic nerve head anomalies, but is has been virtually ignored by the literature worldwide so far. |
| | |
Authors:
|
R Sampaolesi; J R Sampaolesi |
Related Documents
:
|
1428569 - The effects of dopamine, haloperidol and bromocriptine on intraocular pressure. 19424289 - Effect of altered eating habits and periods during ramadan fasting on intraocular press... 15030829 - Evaluation of intraocular pressure change after laser in situ keratomileusis using the ... 17252259 - Influence of oxygen free radicals on the tone of ciliary arteries: a model of vasospasm... 11336939 - The efficacy and safety of latanoprost 0.005% once daily versus brimonidine 0.2% twice ... 15605619 - Bimatoprost versus latanoprost in lowering intraocular pressure in glaucoma and ocular ... 2429099 - Acute hemodynamic and hormonal effects of central versus peripheral sympathetic inhibit... 6241889 - Aortic pressure, substrate utilization and protein synthesis. 22594699 - Ephedrine accelerates psychomotor recovery from anesthesia in macaque monkeys. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: International ophthalmology Volume: 23 ISSN: 0165-5701 ISO Abbreviation: Int Ophthalmol Publication Date: 2001 |
Date Detail:
|
Created Date: 2002-04-11 Completed Date: 2002-05-02 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 7904294 Medline TA: Int Ophthalmol Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 251-7 Citation Subset: IM |
Affiliation:
|
University of Buenos Aires, School of Medicine, Department of Ophthalmology, Argentina. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Diagnostic Techniques, Ophthalmological Eye Abnormalities / diagnosis* Glaucoma, Open-Angle / congenital*, diagnosis Humans Intraocular Pressure Male Microscopy, Confocal Optic Disk / abnormalities*, pathology Tomography Visual Fields |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Detecting AMD with multiply scattered light tomography.
Next Document: Arterial narrowing as a predictive factor in glaucoma.