Dragged disc
There is temporal dragging of the disc and the blood vessels. 
The blood vessels are straightened.

Look for:

  • strabismus
  • high myopia and
  • previous retinal detachment operation 
which are common in patient with retinopathy of prematurity.

Do not diagnose ROP until you have examined the other eye
and obtain a history of prematurity.


1. What is the differential diagnosis of a dragged disc?

2. Who are at risk of retinopathy of prematurity?

3. How is retinopathy of prematurity classified?

4. What is 'plus disease'?

5. What is threshold disease?

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