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Isfahan University of Medical Sciences
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| Document Type
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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107768
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| Doc. No
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T17151
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| Call number
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WW220,A164c,2016
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| Main Entry
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Abtahi, Zahra sadat
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| Title & Author
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Comparison of Scheimpflug and swept-source anterior segment optical coherence tomography in normal and keratoconus eyes\ Zahra Alsadat Abtahi
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| College
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Schools, Medical
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| Date
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, 2016
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| Degree
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Speciality
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| field of study
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ophthalmology
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| Page No
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{No paging}: diag, tab
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| Note
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This is a research dissertation with project ID: 394758
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زهرا سادات ابطحی
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| Abstract
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Purpose The purpose of the study was to assess theagreement of anterior segment optical coherencetomography with its older well-known opponent i.e.,Sheimpflug imaging in evaluation of the cornea innormal and keratoconus subjects.Methods 107 normal and 56 keratoconus eyeswere evaluated with the anterior segment opticalcoherence tomography followed by the Scheimpflugimaging. Parameters included axial keratometrydata in both of steep and flat meridians, meankeratometry and the astigmatism values in thecentral 4.0 mm zone, central, thinnest and apexcorneal thicknesses, Q-value in 8 mm zone andpupil diameter. Corneal topographic maps wererecorded and were evaluated for anterior highestand lowest points, posterior highest and lowestpoints. Average values were recorded for analysis.Results All anterior cornea keratometry indicesshowed perfect agreement between two devices innormal corneas; while the level of agreement inkeratoconus cases ranged from moderate to strong.All posterior keratometry indices also showedperfect agreement in both groups; except for flat Kin normal corneas and steep K in KC ones. Theamount of corneal cylinder in normal corneas hadperfect agreement, and moderate to strong agreementin anterior/posterior cornea in keratoconusgroup. Anterior highest and lowest points showedstrong and perfect agreement in normal andkeratoconus cases, respectively. Posterior highestand lowest points showed strong agreement innormal cases. Thickness indices (central, thinnest,and apex thicknesses) showed perfect agreementbetween two devices in both normal and KCgroups. Mean values of anterior and posteriorhighest points were statistically higher inScheimpflug system.Conclusions Although two imaging technologieshad statistically numerical different output, it seemsthat they have a good agreement in most parameters
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| Descriptor
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Keratoconus
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Anterior Eye Segment
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Tomography, Optical Coherence
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Refractive Surgical Procedures
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Cornea
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| Added Entry
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Mortazavi , Aliakbar, Thesis advisor
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Ghoreishi, Mohammad, Thesis advisor
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| Translated Title Supplied by Cataloguer
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مقایسه دو روش شایم فلاگ و سوپت سورس سگمان قدامی توموگرافی انسجام نوری ( ا سی تی ) در چشم نرمال و قوز قرنیه
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http://elib.mui.ac.ir/site/catalogue/107768
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