Trachoma Grading – Self Directed Learning

Quiz instructions

This quiz will assist you to prepare for work in trachoma screening and treatment programs. Ensure you have a good-sized screen (desktop or tablet computer) and adequate brightness.

Leave enough time to complete the quiz in one session. If you leave the quiz, you will lose your place and will need to start again.

Select all signs that are present in the image or select the ‘Normal’ option if no signs are present. Once you have made your selection select the ‘Check answer’ button.

You will then be presented with the correct answer and a brief explanation of the rationale behind the answer. When viewing the answer, the grading area and notable features on the eyelid will be marked.

To switch between the marked and un-marked images select the ‘Show/hide markup’ button.

To view an enlargement of the image select the ‘Zoom’ button.

Remember that you will be grading using a 2.5× magnification and the enlargement is only provided to aid in your learning. To move to the next question use the ‘Next question’ button.

Trichiasis and corneal opacity should be graded prior to everting the lid. They are graded by examining the external eye with the aid of a 2.5× loupe and a good light source. Both signs are more commonly found in the elderly and, as a rule, are not common in children.

Scores

• 90% or higher: excellent, proceed to the next level.
• 80–90%: well done, proceed to the next level.
• 80% or lower: your grading needs to improve, please re-read the text, and test yourself again.

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