A comparison of the TMS-1 and the corneal analysis system for the evaluation of abnormal corneas

Antalis, John J., Lembach, Richard G., & Carney, Leo G. (1993) A comparison of the TMS-1 and the corneal analysis system for the evaluation of abnormal corneas. The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, 19(1), pp. 58-63.



We used two computerized corneal topography instruments (EyeSys Laboratories' Corneal Analysis System and the Topographic Modeling System (TMS-1) from Computed Anatomy, Inc.] to evaluate 18 eyes (ten patients) with abnormal corneas. The diagnoses included keratoconus, corneal scars, and residual postoperative astigmatism following refractive surgery. The patients were randomly selected from a busy corneal practice to include those with significant corneal refractive error whose management, it was believed, would benefit from corneal topography imaging. Images were taken with both systems, and comparisons were made of the ease of operation, the accuracy of corneal readings, and the usefulness of generated data. Three millimeter zone (Corneal Analysis System) and Simulated Keratometry (TMS-1) values were also compared to each other and to standard keratometric readings. We found the two systems to be very similar in their application and results, although certain differences were apparent in terms of operation, patient acceptance, and the ability to obtain useful data from the more distorted corneas. Neither system worked ideally for severely irregular surfaces.

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ID Code: 3137
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Cornea/, pathology, Corneal Diseases/, pathology, Image Processing, Computer, Assisted/, instrumentation, Ophthalmology/, instrumentation, Adult, Comparative Study, Evaluation Studies, Female, Humans, Male, Middle Aged, Random Allocation, Reproducibility of Results, Research Support, Non, U, S, Gov't, Sensitivity and Specificity
ISSN: 0733-8902
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1993 Contact Lens Association of Ophthalmologists
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 31 Jan 2006 00:00
Last Modified: 09 Jun 2010 12:29

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