Open AccessDiagnostic coincidence of the technologies of analysis of image HRT, OCT and GDx‐VCC
Author(s) -
ALIAS EG,
BORQUE E,
LARROSA JM,
POLO V,
FERRERAS A,
HONRUBIA FM
Publication year - 2007
Publication title -
acta ophthalmologica scandinavica
Language(s) - English
Resource type - Journals
eISSN - 1600-0420
pISSN - 1395-3907
DOI - 10.1111/j.1600-0420.2007.01062_3282.x
Subject(s) - medicine , ophthalmology , scanning laser polarimetry , glaucoma , optic nerve , optical coherence tomography , quadrant (abdomen) , intraocular pressure , optometry , nerve fiber layer , surgery
Purpose: To value the diagnostic coincidence and specificity between different structural parameters of the topography papilar realized with the HRT3, the optic coherence tomography Stratus OCT 3000 and the laser polarimetry GDx‐VCC. Methods: There were included 41 eyes of 41 normal subjects ( intraocular pressure <21mmHg, normal optic nerve head morphology and standard automated perimetry ), and, 312 eyes of 312 consecutive patients sent by the ophtalmologist of zone for suspicion to be able to suffer glaucoma. An analysis was realized to each of them by means of HRT, OCT and GDx‐VCC and there was valued the diagnostic opposing coincidence. Considered to be criteria of damage a Moorfields Regresión Analysis ‐ MRA ‐> 95 % and a Glaucoma Probability Score ‐ GPS ‐> 0.51 to level of the HRT, a NFI> 30 in the GDx and an average thickness or in a quadrant of the cap of retinal nerve fiver layer thickness with a value of p <5 % by OCT. Results: The specificities of MRA and GPS were 85 % and 80 %, in the GDx‐VCC of 78 % and in the OCT of 71 %. Between the suspects they found 113 positive cases by means of MRA, 153 by GPS, 101 by OCT and 64 by GDx‐VCC. Conclusions: It is necessary to possess the analyzers of image in the screening of the glaucoma since they contribute a high specificity, being major the contributed one for the HRT. The opposing specificity is not associated with a low number of positive cases and the diagnostic coincidence of the different analyzers is high. Key words: glaucoma, diagnosis, HRT, OCT, GDx‐VCC.