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Diseases

Trachoma

OVERVIEW

  • Highlights & Basics
  • Images

DIAGNOSIS

  • Diagnostic Approach
  • Risk Factors
  • History & Exam
  • Tests
  • Differential Diagnosis
  • Criteria
  • Screening

TREATMENT

  • Tx Approach
  • Tx Options
  • Emerging Tx
  • Prevention

FOLLOW-UP

  • Overview
  • Complications

REFERENCES

  • Citations
  • Guidelines
  • Credits

PATIENT RESOURCES

  • Patient Instructions

Highlights & Basics

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Key Highlights
  • Trachoma is a keratoconjunctivitis caused by ocular infection with particular serovars of Chlamydia trachomatis.

  • Antibiotics, in conjunction with facial cleanliness campaigns and environmental improvements targeted at communities at risk, aim to reduce the reservoir of infection within a population.

  • Occurs predominantly in children. Poor facial cleanliness may be the most important modifiable risk factor in children who develop trachoma.

  • Children who have had multiple or severe episodes of active trachoma may develop cicatricial disease in later life.

  • Trachomatous cicatricial disease is characterized by tarsal conjunctival scarring, predominantly of the upper lid, although scarring may be sub-epithelial and not always patent. It may ensue over the subsequent decades and lead to trachomatous trichiasis, corneal opacity, and subsequent loss of vision. 

A red eye due to at least 1 inturned eyelash touching the globe (trachomatous trichiasis)
A red eye due to at least 1 inturned eyelash touching the globe (trachomatous trichiasis)
From the collection of Dr Hugh R. Taylor

Quick Reference

  • History & Exam

    • Key Factors

      • Other Factors

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      • Diagnostics Tests

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        • Treatment Options

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          Definition

          Epidemiology

          Etiology

          Pathophysiology

          content by BMJ Group
          Last updated

          Images

          • Eyelid eversion demonstrating follicles on the upper tarsal conjunctiva

            Eyelid eversion demonstrating follicles on the upper tarsal conjunctiva

          • A normal eyelid

            A normal eyelid

          • Eyelid eversion demonstrating scars on the tarsal conjunctiva

            Eyelid eversion demonstrating scars on the tarsal conjunctiva

          • A red eye due to at least 1 inturned eyelash touching the globe (trachomatous trichiasis)

            A red eye due to at least 1 inturned eyelash touching the globe (trachomatous trichiasis)

          • Corneal opacity due to trachoma

            Corneal opacity due to trachoma

          • Eyelid eversion demonstrating intense inflammation of the upper tarsal conjunctiva

            Eyelid eversion demonstrating intense inflammation of the upper tarsal conjunctiva

          Citations

            Key Articles

            • World Health Organization. Trachoma control: a guide for programme managers. Jul 2006 [internet publication].[Full Text]

            • World Health Organization. Report of the 4th global scientific meeting on trachoma, Geneva, 27-29 November 2018. Jun 2019. [internet publication].​[Full Text]

            • Evans JR, Solomon AW, Kumar R, et al. Antibiotics for trachoma. Cochrane Database Syst Rev. 2019 Sep 26;9:CD001860.[Abstract][Full Text]

            • Ejere HO, Alhassan MB, Rabiu M. Face washing promotion for preventing active trachoma. Cochrane Database Syst Rev. 2015 Feb 20;(2):CD003659.[Abstract][Full Text]

            • Burton M, Habtamu E, Ho D, et al. Interventions for trachoma trichiasis. Cochrane Database Syst Rev. 2015 Nov 13;(11):CD004008.[Abstract][Full Text]

            Other Online Resources

            • International Coalition for Trachoma Control: about trachoma

            Referenced Articles

            • 1. World Health Organization. Trachoma: fact sheet. Oct 2022 [internet publication].[Full Text]

            • 2. Polack S, Brooker S, Kuper H, et al. Mapping the global distribution of trachoma. Bull World Health Organ. 2005 Dec;83(12):913-9.[Abstract][Full Text]

            • 3. World Health Organization. WHO Alliance for the Global Elimination of Trachoma: progress report on elimination of trachoma, 2022. Jul 2023 [internet publication].​[Full Text]

            • 4. Allen SK, Semba RD. The trachoma menace in the United States, 1897-1960. Surv Ophthalmol. 2002 Sep-Oct;47(5):500-9.[Abstract]

            • 5. West SK, Munoz B, Mkocha H, et al. Progression of active trachoma to scarring in a cohort of Tanzanian children. Ophthalmic Epidemiol. 2001 Jul;8(2-3):137-44.[Abstract]

            • 6. Bowman RJ, Jatta B, Cham B, et al. Natural history of trachomatous scarring in the Gambia: results of a 12-year longitudinal follow-up. Ophthalmology. 2001 Dec;108(12):2219-24.[Abstract]

            • 7. Munoz B, Aron J, Turner V, et al. Incidence estimates of late stages of trachoma among women in a hyperendemic area of central Tanzania. Trop Med Int Health. 1997 Nov;2(11):1030-8.[Abstract][Full Text]

            • 8. Ramadhani AM, Derrick T, Holland MJ, et al. Blinding trachoma: systematic review of rates and risk factors for progressive disease. PLoS Negl Trop Dis. 2016 Aug;10(8):e0004859.[Abstract][Full Text]

            • 9. WoldeKidan E, Daka D, Legesse D, et al. Prevalence of active trachoma and associated factors among children aged 1 to 9 years in rural communities of Lemo district, southern Ethiopia: community based cross sectional study. BMC Infect Dis. 2019 Oct 24;19(1):886.[Abstract][Full Text]

            • 10. Ketema K, Tiruneh M, Woldeyohannes D, et al. Active trachoma and associated risk factors among children in Baso Liben District of East Gojjam, Ethiopia. BMC Public Health. 2012 Dec 22;12:1105.[Abstract][Full Text]

            • 11. Schemann JF, Sacko D, Malvy D, et al. Risk factors for trachoma in Mali. Int J Epidemiol. 2002 Feb;31(1):194-201.[Abstract][Full Text]

            • 12. West SK, Munoz B, Lynch M, et al. Risk factors for constant, severe trachoma among preschool children in Kongwa, Tanzania. Am J Epidemiol. 1996 Jan 1;143(1):73-8.[Abstract][Full Text]

            • 13. Abebe TA, Tucho GT. The impact of access to water supply and sanitation on the prevalence of active trachoma in Ethiopia: A systematic review and meta-analysis. PLoS Negl Trop Dis. 2021 Sep;15(9):e0009644.[Abstract][Full Text]

            • 14. Courtright P, West SK. Contribution of sex-linked biology and gender roles to disparities with trachoma. Emerg Infect Dis. 2004 Nov;10(11):2012-6.[Abstract][Full Text]

            • 15. Burton MJ, Mabey DC. The global burden of trachoma: a review. PLoS Negl Trop Dis. 2009 Oct 27;3(10):e460.[Abstract][Full Text]

            • 16. Wright HR, Turner A, Taylor HR. Trachoma and poverty: unnecessary blindness further disadvantages the poorest people in the poorest countries. Clin Exp Optom. 2007 Nov;90(6):422-8.[Abstract][Full Text]

            • 17. Habtamu E, Wondie T, Aweke S, et al. Trachoma and relative poverty: a case-control study. PLoS Negl Trop Dis. 2015 Nov 23;9(11):e0004228.[Abstract][Full Text]

            • 18. Emerson PM, Lindsay SW, Alexander N, et al. Role of flies and provision of latrines in trachoma control: cluster-randomised controlled trial. Lancet. 2004 Apr 3;363(9415):1093-8.[Abstract]

            • 19. Centers for Disease Control and Prevention. Water, sanitation, and environmentally related hygiene (WASH): trachoma. Jun 2022 [internet publication].​[Full Text]

            • 20. Emerson PM, Lindsay SW, Walraven GE, et al. Effect of fly control on trachoma and diarrhoea. Lancet. 1999 Apr 24;353(9162):1401-3.[Abstract]

            • 21. World Health Organization​. Ending the neglect to attain the sustainable development goals: a road map for neglected tropical diseases 2021-2030. Jan 2021 [internet publication].[Full Text]

            • 22. World Health Organization. Report of the 2nd global scientific meeting on trachoma. Aug 2003 [internet publication].[Full Text]

            • 23. Oldenburg CE. One size does not fit all: achieving trachoma control by 2030. Am J Trop Med Hyg. 2019 Dec;101(6):1189-90.[Abstract][Full Text]

            • 24. Renneker KK, Abdala M, Addy J, et al. Global progress toward the elimination of active trachoma: an analysis of 38 countries. Lancet Glob Health. 2022 Apr;10(4):e491-500.[Abstract][Full Text]

            • 25. Harding-Esch EM, Holland MJ, Schémann JF, et al. Impact of a single round of mass drug administration with azithromycin on active trachoma and ocular Chlamydia trachomatis prevalence and circulating strains in The Gambia and Senegal. Parasit Vectors. 2019 Oct 22;12(1):497.[Abstract][Full Text]

            • 26. Xiong T, Yue Y, Li WX, et al. Effectiveness of azithromycin mass drug administration on trachoma: a systematic review. Chin Med J (Engl). 2021 Sep 16;134(24):2944-53.[Abstract][Full Text]

            • 27. Stewart AEP, Zerihun M, Gessese D, et al. Progress to Eliminate Trachoma as a Public Health Problem in Amhara National Regional State, Ethiopia: results of 152 population-based surveys. Am J Trop Med Hyg. 2019 Dec;101(6):1286-95.[Abstract][Full Text]

            • 28. Nash SD, Chernet A, Weiss P, et al. Prevalence of ocular chlamydia trachomatis infection in Amhara Region, Ethiopia, after 8 years of trachoma control interventions. Am J Trop Med Hyg. 2023 Feb 1;108(2):261-7.[Abstract][Full Text]

            • 29. Aragie S, Wittberg DM, Tadesse W, et al. Water, sanitation, and hygiene for control of trachoma in Ethiopia (WUHA): a two-arm, parallel-group, cluster-randomised trial. Lancet Glob Health. 2022 Jan;10(1):e87-95.[Abstract][Full Text]

            • 30. World Health Organization. Trachoma control: a guide for programme managers. Jul 2006 [internet publication].[Full Text]

            • 31. World Health Organization. Report of the 4th global scientific meeting on trachoma, Geneva, 27-29 November 2018. Jun 2019. [internet publication].​[Full Text]

            • 32. Solomon AW, Foster A, Mabey DC. Clinical examination versus Chlamydia trachomatis assays to guide antibiotic use in trachoma control programmes. Lancet Infect Dis. 2006 Jan;6(1):5-6.[Abstract]

            • 33. Harding-Esch EM, Holland MJ, Schémann JF, et al. Diagnostic accuracy of a prototype point-of-care test for ocular Chlamydia trachomatis under field conditions in The Gambia and Senegal. PLoS Negl Trop Dis. 2011 Aug;5(8):e1234.[Abstract][Full Text]

            • 34. Derrick TR, Sandetskaya N, Pickering H, et al. DjinniChip: evaluation of a novel molecular rapid diagnostic device for the detection of Chlamydia trachomatis in trachoma-endemic areas. Parasit Vectors. 2020 Oct 27;13(1):533.[Abstract][Full Text]

            • 35. Gwyn S, Nute AW, Sata E, et al. The performance of immunoassays to measure antibodies to the chlamydia trachomatis antigen Pgp3 in different epidemiological settings for trachoma. Am J Trop Med Hyg. 2021 Aug 16;105(5):1362-7.[Abstract][Full Text]

            • 36. World Health Organization. Report of the 3rd global scientific meeting on trachoma. Jul 2010 [internet publication].[Full Text]

            • 37. Stelmach RD, Flueckiger RM, Shutt J, et al. The costs of monitoring trachoma elimination: Impact, surveillance, and trachomatous trichiasis (TT)-only surveys. PLoS Negl Trop Dis. 2019 Sep;13(9):e0007605.[Abstract][Full Text]

            • 38. Negrel AD, Taylor HR, West S. Guidelines for rapid assessment for blinding trachoma. Geneva, Switzerland: World Health Organization and International Trachoma Initiative; 2001.[Full Text]

            • 39. Senyonjo L, Aboe A, Bailey R, et al. Operational adaptations of the trachoma pre-validation surveillance strategy employed in Ghana: a qualitative assessment of successes and challenges. Infect Dis Poverty. 2019 Aug 27;8(1):78.[Abstract][Full Text]

            • 40. Liu B, Cowling C, Hayen A, et al. Relationship between community drug administration strategy and changes in trachoma prevalence, 2007 to 2013. PLoS Negl Trop Dis. 2016 Jul 6;10(7):e0004810. [Abstract][Full Text]

            • 41. West SK, Bailey R, Munoz B, et al. A randomized trial of two coverage targets for mass treatment with azithromycin for trachoma. PLoS Negl Trop Dis. 2013 Aug 29;7(8):e2415.[Abstract][Full Text]

            • 42. Yohannan J, Munoz B, Mkocha H, et al. Can we stop mass drug administration prior to 3 annual rounds in communities with low prevalence of trachoma?: PRET Ziada trial results. JAMA Ophthalmol. 2013 Apr;131(4):431-6.[Abstract][Full Text]

            • 43. Bella AL, Einterz E, Huguet P, et al. Effectiveness and safety of azithromycin 1.5% eye drops for mass treatment of active trachoma in a highly endemic district in Cameroon. BMJ Open Ophthalmol. 2020;5(1):e000531.[Abstract][Full Text]

            • 44. Hu VH, Harding-Esch EM, Burton MJ, et al. Epidemiology and control of trachoma: systematic review. Trop Med Int Health. 2010 Jun;15(6):673-91.[Abstract][Full Text]

            • 45. Khandekar R, Ton TK, Do Thi P. Impact of face washing and environmental improvements on reduction of active trachoma in Vietnam - a public health intervention study. Ophthalmic Epidemiol. 2006 Feb;13(1):43-52.[Abstract]

            • 46. House JI, Ayele B, Porco TC, et al. Assessment of herd protection against trachoma due to repeated mass antibiotic distributions: a cluster-randomised trial. Lancet. 2009 Mar 28;373(9669):1111-8.[Abstract]

            • 47. Amza A, Kadri B, Nassirou B, et al. A cluster-randomized trial to assess the efficacy of targeting trachoma treatment to children. Clin Infect Dis. 2017 Mar 15;64(6):743-50.[Abstract][Full Text]

            • 48. Evans JR, Solomon AW, Kumar R, et al. Antibiotics for trachoma. Cochrane Database Syst Rev. 2019 Sep 26;9:CD001860.[Abstract][Full Text]

            • 49. Porco TC, Gebre T, Ayele B, et al. Effect of mass distribution of azithromycin for trachoma control on overall mortality in Ethiopian children: a randomized trial. JAMA. 2009 Sep 2;302(9):962-8.[Abstract][Full Text]

            • 50. O'Brien KS, Emerson P, Hooper PJ, et al. Antimicrobial resistance following mass azithromycin distribution for trachoma: a systematic review. Lancet Infect Dis. 2019 Jan;19(1):e14-25.[Abstract]

            • 51. Rolfe RJ, Shaikh H, Tillekeratne LG. Mass drug administration of antibacterials: weighing the evidence regarding benefits and risks. Infect Dis Poverty. 2022 Jun 30;11(1):77.[Abstract][Full Text]

            • 52. Oldenburg CE, Arzika AM, Amza A, et al. Mass azithromycin distribution to prevent childhood mortality: a pooled analysis of cluster-randomized trials. Am J Trop Med Hyg. 2019 Mar;100(3):691-5.[Abstract][Full Text]

            • 53. Gebre T, Ayele B, Zerihun M, et al. Comparison of annual versus twice-yearly mass azithromycin treatment for hyperendemic trachoma in Ethiopia: a cluster-randomised trial. Lancet. 2012 Jan 14;379(9811):143-51.[Abstract]

            • 54. International Coalition for Trachoma Control.​ Preferred practices for zithromax mass drug administration​. Sep 2013 [internet publication].[Full Text]

            • 55. Ejere HO, Alhassan MB, Rabiu M. Face washing promotion for preventing active trachoma. Cochrane Database Syst Rev. 2015 Feb 20;(2):CD003659.[Abstract][Full Text]

            • 56. Czerniewska A, Versteeg A, Shafi O, et al. Comparison of face washing and face wiping methods for trachoma control: a pilot study. Am J Trop Med Hyg. 2020 Apr;102(4):740-3.[Abstract][Full Text]

            • 57. Abdou A, Munoz BE, Nassirou B, et al. How much is not enough? A community randomized trial of a Water and Health Education programme for trachoma and ocular C. trachomatis infection in Niger. Trop Med Int Health. 2010 Jan;15(1):98-104.[Abstract][Full Text]

            • 58. West SK, Emerson PM, Mkocha H, et al. Intensive insecticide spraying for fly control after mass antibiotic treatment for trachoma in a hyperendemic setting: a randomised trial. Lancet. 2006 Aug 12;368(9535):596-600.[Abstract]

            • 59. Frick KD, Melia BM, Buhrmann RR, et al. Trichiasis and disability in a trachoma-endemic area of Tanzania. Arch Ophthalmol. 2001 Dec;119(12):1839-44.[Abstract][Full Text]

            • 60. Dhaliwal P, Nagpal G, Bhatia MS. Health-related quality of life in patients with trachomatous trichiasis or entropion. Ophthalmic Epidemiol. 2006 Feb;13(1):59-66.[Abstract]

            • 61. Bowman RJ, Faal H, Myatt M, et al. Longitudinal study of trachomatous trichiasis in the Gambia. Br J Ophthalmol. 2002 Mar;86(3):339-43.[Abstract][Full Text]

            • 62. Habtamu E, Wondie T, Aweke S, et al. Posterior lamellar versus bilamellar tarsal rotation surgery for trachomatous trichiasis in Ethiopia: a randomised controlled trial. Lancet Glob Health. 2016 Mar;4(3):e175-84. [Abstract][Full Text]

            • 63. Habtamu E, Wondie T, Tadesse Z et al. Posterior lamellar versus bilamellar tarsal rotation surgery for trachomatous trichiasis: Long-term outcomes from a randomised controlled trial. EClinicalMedicine. 2019 Nov 1 [Epub ahead of print].[Full Text]

            • 64. West SK, West ES, Alemayehu W, et al. Single-dose azithromycin prevents trichiasis recurrence following surgery: randomized trial in Ethiopia. Arch Ophthalmol. 2006 Mar;124(3):309-14.[Abstract]

            • 65. Woreta F, Munoz B, Gower E, et al. Three-year outcomes of the surgery for trichiasis, antibiotics to prevent recurrence trial. Arch Ophthalmol. 2012 Apr;130(4):427-31.[Abstract][Full Text]

            • 66. Zhang H, Kandel RP, Atakari HK, et al. Impact of oral azithromycin on recurrence of trachomatous trichiasis in Nepal over 1 year. Br J Ophthalmol. 2006 Aug;90(8):943-8.[Abstract][Full Text]

            • 67. Burton M, Habtamu E, Ho D, et al. Interventions for trachoma trichiasis. Cochrane Database Syst Rev. 2015 Nov 13;(11):CD004008.[Abstract][Full Text]

            • 68. Adafrie Y, Redae G, Zenebe D, et al. Uptake of trachoma trichiasis surgery and associated factors among trichiasis-diagnosed clients in Southern Tigray, Ethiopia. Clin Ophthalmol. 2021;15:1939-48.[Abstract][Full Text]

            • 69. Mahande M, Tharaney M, Kirumbi E, et al. Uptake of trichiasis surgical services in Tanzania through two village-based approaches. Br J Ophthalmol. 2007 Feb;91(2):139-42.[Abstract][Full Text]

            • 70. West ES, Munoz B, Imeru A, et al. The association between epilation and corneal opacity in eye with trachomatous trichiasis. Br J Ophthalmol. 2006 Feb;90(2):171-4.[Abstract][Full Text]

            • 71. Rajak SN, Habtamu E, Weiss HA, et al. Surgery versus epilation for the treatment of minor trichiasis in Ethiopia: a randomised controlled noninferiority trial. PLoS Med. 2011 Dec;8(12):e1001136.[Abstract][Full Text]

            • 72. Habtamu E, Rajak SN, Tadesse Z, et al. Epilation for minor trachomatous trichiasis: four-year results of a randomised controlled trial. PLoS Negl Trop Dis. 2015 Mar 13;9(3):e0003558.[Abstract][Full Text]

            • 73. Rajak SN, Habtamu E, Weiss HA, et al. Absorbable versus silk sutures for surgical treatment of trachomatous trichiasis in Ethiopia: a randomised controlled trial. PLoS Med. 2011 Dec;8(12):e1001137.[Abstract][Full Text]

            • 74. Miller K, Pakpour N, Yi E, et al. Pesky trachoma suspect finally caught. Br J Ophthalmol. 2004 Jun;88(6):750-1.[Abstract][Full Text]

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