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Foveal changes during ocular movements in normal eyes. A prospective study.Kinetics of posterior pole during ocular movements in various diseases:a videomorphing technique
Author(s) -
THEOCHARIS IP
Publication year - 2012
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2012.2711.x
Subject(s) - posterior pole , foveal , eye movement , gaze , medicine , ophthalmology , physics , anatomy , visual acuity , computer science , retinal , artificial intelligence
Purpose To reveal the structural changes of the fovea and the posterior pole during ocular movements (OM) and specifically from the temporal gaze to nasal gaze.Videomorphing is proposed to study the kinetics of posterior pole during OM in various diseases. Methods A prospective controlled study.The right normal eye of healthy individuals was enrolled. SD OCT cube scans were used. The central fovea thickness (CFT) was chosen as the primary measurement.The measurements were obtained at the primary positions and at the temporal and nasal gaze.Four CFT values were recorded:the CFTtemp at the temporal gaze with a vertex1 distance ,the CFTnasal at the nasal gaze with a vertex2 distance,the CFT1 at the vertex1 and the straightforward position and the CFT2 at the vertex2 and the straightforward position.The absolute difference between the CFT temp‐CFT nasal was compared with the absolute difference between CFT1‐CFT2 at the straightforward position of every patient . Paired t‐test was used.Videomorphing of the OCT images with the same method was used to animate the posterior pole deformation during horizontal OM in healthy individuals,in patients with dry and wet AMD,with CSC and with high myopia. Results 20 patients were included.The |CFT1‐CFT2| ranged from 1μm to 4μm with mean value 1.6μm. |CFTtemp‐CFTnasal| ranged from 1μm to 10μm with mean 5.8μm.(p= 0.0013). Videomorping revealed oscillation of the posterior pole during OM with specific characteristics for every disease. Conclusion CFT showed significant fluctuation during ocular movements. Animation of posterior pole deformation during OM show different characteristics between normal eyes , AMD , CSC and high myopic eyes.