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Role of In Vivo Confocal Microscopy in the Diagnosis of Microbial Keratitis

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Infections of the Cornea and Conjunctiva
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Abstract

In vivo confocal microscopy (IVCM) is a noninvasive tool that potentially enables rapid diagnosis of infective keratitis, particularly in cases of Acanthamoeba or fungal keratitis. Nonspecific signs of infection include the presence of leukocytes and Langerhans cells, which can sometimes be difficult to distinguish from pathogenic organisms. This chapter discusses the IVCM morphological features and the diagnostic sensitivity and specificity of IVCM for various types of infective keratitis. The role of IVCM in assessing prognosis and monitoring the effect of treatment is also discussed.

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References

  1. Patel DV, McGhee CN. Contemporary in vivo confocal microscopy of the living human cornea using white light and laser scanning techniques: a major review. Clin Exp Ophthalmol. 2007;35(1):71–88.

    Article  Google Scholar 

  2. Zhivov A, Stave J, Vollmar B, Guthoff R. In vivo confocal microscopic evaluation of Langerhans cell density and distribution in the normal human corneal epithelium. Graefes Arch Clin Exp Ophthalmol. 2005;243(10):1056–61.

    Article  Google Scholar 

  3. Smedowski A, Tarnawska D, Orski M, Wroblewska-Czajka E, Kaarniranta K, Aragona P, Wylegala E. Cytoarchitecture of epithelial inflammatory infiltration indicates the aetiology of infectious keratitis. Acta Ophthalmol. 2017;95(4):405–13.

    Article  Google Scholar 

  4. De Craene S, Knoeri J, Georgeon C, Kestelyn P, Borderie VM. Assessment of confocal microscopy for the diagnosis of polymerase chain reaction-positive Acanthamoeba keratitis: a case-control study. Ophthalmology. 2018;125(2):161–8.

    Article  Google Scholar 

  5. Chidambaram JD, Prajna NV, Palepu S, Lanjewar S, Shah M, Elakkiya S, Macleod D, Lalitha P, Burton MJ. In vivo confocal microscopy cellular features of host and organism in bacterial, fungal, and Acanthamoeba keratitis. Am J Ophthalmol. 2018;190:24–33.

    Article  Google Scholar 

  6. Kanavi MR, Javadi M, Yazdani S, Mirdehghanm S. Sensitivity and specificity of confocal scan in the diagnosis of infectious keratitis. Cornea. 2007;26(7):782–6.

    Article  Google Scholar 

  7. Hau SC, Dart JK, Vesaluoma M, Parmar DN, Claerhout I, Bibi K, Larkin DF. Diagnostic accuracy of microbial keratitis with in vivo scanning laser confocal microscopy. Br J Ophthalmol. 2010;94(8):982–7.

    Article  Google Scholar 

  8. Tu EY, Joslin CE, Sugar J, Booton GC, Shoff ME, Fuerst PA. The relative value of confocal microscopy and superficial corneal scrapings in the diagnosis of Acanthamoeba keratitis. Cornea. 2008;27(7):764–72.

    Article  Google Scholar 

  9. Goh JWY, Harrison R, Hau S, Alexander CL, Tole DM, Avadhanam VS. Comparison of in vivo confocal microscopy, PCR and culture of corneal scrapes in the diagnosis of Acanthamoeba keratitis. Cornea. 2018;37(4):480–5.

    Article  Google Scholar 

  10. Füst Á, Tóth J, Simon G, Imre L, Nagy ZZ. Specificity of in vivo confocal cornea microscopy in Acanthamoeba keratitis. Eur J Ophthalmol. 2017;27(1):10–5.

    Article  Google Scholar 

  11. Chidambaram JD, Prajna NV, Larke NL, Palepu S, Lanjewar S, Shah M, Elakkiya S, Lalitha P, Carnt N, Vesaluoma MH, Mason M, Hau S, Burton MJ. Prospective study of the diagnostic accuracy of the in vivo laser scanning confocal microscope for severe microbial keratitis. Ophthalmology. 2016;123(11):2285–93.

    Article  Google Scholar 

  12. Kheirkhah A, Satitpitakul V, Syed ZA, Müller R, Goyal S, Tu EY, Dana R. Factors influencing the diagnostic accuracy of laser-scanning in vivo confocal microscopy for Acanthamoeba keratitis. Cornea. 2018;37(7):818–23.

    Article  Google Scholar 

  13. Huang P, Tepelus T, Vickers LA, Baghdasaryan E, Huang J, Irvine JA, Hsu HY, Sadda S, Lee OL. Quantitative analysis of depth, distribution, and density of cysts in Acanthamoeba keratitis using confocal microscopy. Cornea. 2017;36(8):927–32.

    Article  Google Scholar 

  14. Wang YE, Tepelus TC, Gui W, Irvine JA, Lee OL, Hsu HY. Reduction of Acanthamoeba cyst density associated with treatment detected by in vivo confocal microscopy in Acanthamoeba keratitis. Cornea. 2019;38(4):463–8.

    Article  Google Scholar 

  15. Brasnu E, Bourcier T, Dupas B, Degorge S, Rodallec T, Laroche L, Borderie V, Baudouin C. In vivo confocal microscopy in fungal keratitis. Br J Ophthalmol. 2007;91(5):588–91.

    Article  Google Scholar 

  16. Chidambaram JD, Prajna NV, Larke N, Macleod D, Srikanthi P, Lanjewar S, Shah M, Lalitha P, Elakkiya S, Burton MJ. In vivo confocal microscopy appearance of Fusarium and Aspergillus species in fungal keratitis. Br J Ophthalmol. 2017;101(8):1119–23.

    Article  Google Scholar 

  17. Tabatabaei SA, Soleimani M, Tabatabaei SM, Beheshtnejad AH, Valipour N, Mahmoudi S. The use of in vivo confocal microscopy to track treatment success in fungal keratitis and to differentiate between Fusarium and Aspergillus keratitis. Int Ophthalmol. 2020;40(2):483–91.

    Article  Google Scholar 

  18. Kheirkhah A, Syed ZA, Satitpitakul V, Goyal S, Müller R, Tu EY, Dana R. Sensitivity and specificity of laser-scanning in vivo confocal microscopy for filamentous fungal keratitis: role of observer experience. Am J Ophthalmol. 2017;179:81–9.

    Article  Google Scholar 

  19. Wu X, Tao Y, Qiu Q, Wu X. Application of image recognition-based automatic hyphae detection in fungal keratitis. Australas Phys Eng Sci Med. 2018;41(1):95–103.

    Article  Google Scholar 

  20. Liu Z, Cao Y, Li Y, Xiao X, Qiu Q, Yang M, Zhao Y, Cui L. Automatic diagnosis of fungal keratitis using data augmentation and image fusion with deep convolutional neural network. Comput Methods Prog Biomed. 2020;187:105019.

    Article  Google Scholar 

  21. Chidambaram JD, Prajna NV, Palepu S, Palepu S, Lanjewar S, Shah M, Elakkiya S, Lalitha P, Macleod D, Burton MJ. Cellular morphological changes detected by laser scanning in vivo confocal microscopy associated with clinical outcome in fungal keratitis. Sci Rep. 2019;9(1):8334.

    Article  Google Scholar 

  22. Malhotra C, Jain AK, Kaur S, Dhingra D, Hemanth V, Sharma SP. In vivo confocal microscopic characteristics of microsporidial keratoconjunctivitis in immunocompetent adults. Br J Ophthalmol. 2017;101(9):1217–22.

    Article  Google Scholar 

  23. Hsiao YC, Tsai IL, Kuo CT, Yang TL. Diagnosis of microsporidial keratitis with in vivo confocal microscopy. J Xray Sci Technol. 2013;21(1):103–10.

    PubMed  Google Scholar 

  24. Sagoo MS, Mehta JS, Hau S, Irion LD, Curry A, Bonshek RE, Tuft SJ. Microsporidium stromal keratitis: in vivo confocal findings. Cornea. 2007;26(7):870–3.

    Article  Google Scholar 

  25. Vaddavalli PK, Garg P, Sharma S, Thomas R, Rao GN. Confocal microscopy for Nocardia keratitis. Ophthalmology. 2006;113(9):1645–50.

    Article  Google Scholar 

  26. Shiraishi A, Hara Y, Takahashi M, Oka N, Yamaguchi M, Suzuki T, Uno T, Ohashi Y. Demonstration of “owl’s eye” morphology by confocal microscopy in a patient with presumed cytomegalovirus corneal endotheliitis. Am J Ophthalmol. 2007;143(4):715–7.

    Article  Google Scholar 

  27. Peng RM, Guo YX, Xiao GG, Li CD, Hong J. Characteristics of corneal endotheliitis among different viruses by in vivo confocal microscopy. Ocul Immunol Inflamm. 2019;7:1–9.

    Article  Google Scholar 

  28. Kobayashi A, Yokogawa H, Higashide T, Nitta K, Sugiyama K. Clinical significance of owl eye morphologic features by in vivo laser confocal microscopy in patients with cytomegalovirus corneal endotheliitis. Am J Ophthalmol. 2012;153(3):445–53.

    Article  Google Scholar 

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Correspondence to Dipika V. Patel .

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Patel, D.V. (2021). Role of In Vivo Confocal Microscopy in the Diagnosis of Microbial Keratitis. In: Das, S., Jhanji, V. (eds) Infections of the Cornea and Conjunctiva. Springer, Singapore. https://doi.org/10.1007/978-981-15-8811-2_17

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  • DOI: https://doi.org/10.1007/978-981-15-8811-2_17

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-8810-5

  • Online ISBN: 978-981-15-8811-2

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