System for quantifying the formation stages of corneal arcus

Aulia Nasution, Sally Fahdarina, Deny I. Cahya

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)


Extensive research on interpreting the clinical signs of corneal-arcus formation and their related diagnostics potentials have found that there is a strong correlation of the arcus formation with the risk of coronary artery diseases and lipid stratification. Clinically the stages of the arcus formation are normally observed as separate grey-whitish arcs, that are formed at the inferior and then at the superior poles of the cornea. These arcs will by time being elongated to form a ring approximately 1 mm in width. In this paper, efforts to develop quantification system that is capable to recognize the stages of the arcus formation will be reported. The quantification was based on eye-images taken using prior developed low-cost digital image acquisition system, which self constructed from a plastic safety welding-goggle that was modified by placing two Logitec C525 webcam and LEDs lighting system. Pattern images of arcs with variation of arc's positions, lengths and thickness were used for pre-calibration purposes. Then these similar arcs are drawn on the of periphery of cornea images to simulate dummy corneal arcus, which mimick the stages of corneal arcus development. Using 672 data images, results of recognition show a good recognition rate, i.e. 93.6 % for determining arc's length (with maximum %RSD of 5.67 %) and 84.83 % for determining arc's thickness (with maximum %RSD of 5.67 %). Worser precision data were observed to happen for the small arc's length as well as small arc's thickness. Current efforts are devoted to translate the system for clinical trials.

Original languageEnglish
Title of host publicationInternational Conference on Photonics Solutions 2015
EditorsNattaporn Chattham, Apichart Pattanaporkratana, Surasak Chiangga, Sarun Sumriddetchkajorn
ISBN (Electronic)9781628418750
Publication statusPublished - 2015
Event2nd International Conference on Photonics Solutions, ICPS 2015 - Hua Hin, Thailand
Duration: 6 Jul 20158 Jul 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference2nd International Conference on Photonics Solutions, ICPS 2015
CityHua Hin


  • Corneal arcus
  • Formation stages
  • Optical metrology
  • Optical quantification system


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