Diagnosis and Differential Diagnosis

Abstract

The clinical diagnosis of Acanthamoeba keratitis is mainly based on the following aspects:

1.
Risk factors: common risk factors include agricultural trauma, corneal contact lenses wear, splashing of foreign matters or small insects, etc.
2.
Onset time: the disease gradually progresses in 3–7 days after being affected by one or more risk factors.
3.
Characteristics of the corneal signs (Fig. 5.1a–d):
1. (a)
  Typical corneal ring infiltration
2. (b)
  Ditch-shaped melting at the edge of corneal ulcer
3. (c)
  Crude salt-like granular dense infiltration
4. (d)
  Radial keratoneuritis

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Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
Xuguang Sun

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Xuguang Sun
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Sun, X. (2018). Diagnosis and Differential Diagnosis. In: Acanthamoeba Keratitis. Springer, Singapore. https://doi.org/10.1007/978-981-10-5212-5_5