ISSN 2398-2985      

Microphthalmos / anophthalmos

Jreptile

Introduction

  • Cause: congenital abnormality; may be associated with genetic factors, malnutrition or egg incubation at too high a temperature.
  • Signs: lack of apparent eyes, visual impairment, blindness.
  • Treatment: none.
  • Prognosis: dependent on animal's ability to eat.
  • As with any species, ocular congenital abnormalities may be encountered in reptiles and the most frequent are microphthalmos and less commonly anophthalmos.
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Pathogenesis

Etiology

  • These congenital defects may be associated with egg incubation at too high a temperature Egg incubation overview; metabolism is inevitably increased and a relative hypoxia appears to occur resulting in abnormalities in globe development.
  • Genetic and nutritional factors may also be contributing factors.

Predisposing factors

General

  • Improper incubation techniques.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Ballard B & Cheek R (2017) Exotic Animal Medicine for the Veterinary Technician. 3rd edn. Wiley-Blackwell.
  • Girling S J (2013) Veterinary Nursing of Exotic Pets. 2nd edn. Wiley-Blackwell.
  • Williams D (2012) The Reptile Eye. In: Ophthalmology of Exotic Pets. Wiley-Blackwell, UK. pp 190-191.
     
Reproduced with permission from Bonnie Ballard & Ryan Cheek: Exotic Animal Medicine for the Veterinary Technician © 2017, Simon J Girling: Veterinary Nursing of Exotic Pets © 2013, and David L Williams: Ophthalmology of Exotic Pets © 2012, published by John Wiley & Sons.

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