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Retinopathy Globe Enlarged

Retinopathy globe enlarged (RGE) is an autosomal recessive disease that affects the Rhode Island Red chicken breed. The disease is characterized by progressive retinal degeneration resulting in blindness by the time the chick is 4 weeks of age. In the early 1980s, approximately 0.2% of chickens in several commercial flocks in the United Kingdom had RGE. Affected chickens exhibit a poor pupillary light response and development of cataracts.

Clinical Signs



  • History
  • Clinical signs
  • Eye exam


Supportive care: Isolate the bird from the flock and place in a safe, comfortable, warm location (your own chicken "intensive care unit") with easy access to water and food. Limit stress. Call your veterinarian.:


Scientific References

Age Range

It occurs in chicks by the time they are 4 weeks of age.

Also Consider