Accuracy and reliability of telemedicine for diagnosis of cytomegalovirus retinitis

• Main Authors: Ausayakhun S., Skalet A.H., Jirawison C., Keenan J.D., Khouri C., Nguyen K., Kalyani P.S., Heiden D., Holland G.N., Margolis T.P.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-81855167035&partnerID=40&md5=f90db663bd2add7ac61f2cc025087ce3; http://www.ncbi.nlm.nih.gov/pubmed/21861977; http://cmuir.cmu.ac.th/handle/6653943832/2964
• Institution: Chiang Mai University

Purpose: To determine the feasibility of remote diagnostic screening for cytomegalovirus (CMV) retinitis among HIV patients in northern Thailand. Design: Prospective, observational cross-sectional study. Methods: One hundred eighty-two eyes from 94 consecutive patients with HIV seen in 2008 and 2009 at a tertiary university-based medical center were photographed using a digital retinal camera. Individual and composite images were uploaded to a secure web site. Three expert graders accessed the electronic images and graded each image for signs of CMV retinitis. Results of remote expert grading were compared with on-site patient examination by local expert ophthalmologists. Results: On-site ophthalmologists diagnosed CMV retinitis in 89 (48.9%) of 182 eyes. Trained ophthalmic photographers obtained digital retinal images for all 182 eyes. As compared with the on-site examinations, the sensitivity for detecting CMV retinitis by remote readers using composite retinal images ranged from 89% to 91%. The specificity for detecting CMV retinitis by remote readers ranged from 85% to 88%. Intrarater reliability was high, with each grader achieving a κ value of 0.93. Interrater reliability among the 3 graders also was high, with a κ value of 0.86. Conclusions: Remote diagnostic screening for CMV retinitis among HIV-positive patients may prove to be a valuable tool in countries where the burden of HIV exceeds the capacity of the local eye care providers to screen for ocular opportunistic infections. © 2011 Elsevier Inc.