Estimates of the Global Burden of Trachoma.

<p>DALYs and HALYs are not directly comparable, as discussed in the text.</p

Map of trachoma endemic countries in 2009.

<p>Reproduced with permission from Silvio P. Mariotti, WHO/NMH/PBD.</p

The WHO simplified system for the assessment of trachoma [8].

<p>The WHO simplified system for the assessment of trachoma <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0000460#pntd.0000460-Thylefors1" target="_blank">[8]</a>.</p

Estimates of the number of individuals affected by trachoma worldwide since 1981.

<p>Numbers are millions of people.</p

Summary of the incidence and progression rates of trachomatous scarring.

a<p>Including 82 people with no scarring at baseline.</p>b<p>Estimated incidence rates based on age-specific prevalence of scarring, trichiasis, and corneal opacity among women.</p

Histological sections of healthy conjunctiva and trachomatous scarring.

<p>(Top) Healthy. (Middle and bottom) Scarred, note disruption of the epithelial and connective tissue morphology, and an increased inflammatory cells.</p

Schemas of normal conjunctiva, active trachomatous disease, and trachomatous scarring.

<p>Schemas of normal conjunctiva, active trachomatous disease, and trachomatous scarring.</p

Histological section of the conjunctiva from a child with active trachoma.

<p>A subepithelial follicle is seen. Kindly provided by Professor A. El-Asrar, King Saud University.</p

Clinical features and grades of trachoma.

<p>N, normal; TF, Trachomatous inflammation–follicular; TI, Trachomatous inflammation–intense; TS, trachomatous scarring; TT, trachomatous trichiasis; CO, corneal opacity.</p

Progression to trachomatous trichiasis.

<p>Progression to trachomatous trichiasis.</p