Home

Disciform lesion

A disciform lesion is a collection of fresh blood, clotted blood and scar tissue beneath the retina. It usually arises in more elderly individuals and is caused by abnormal blood vessels growing beneath the retina. These lesions form 'tumours' (i.e, swellings) but these tumours are non-neoplastic.

 

Macular disciform lesion

Most disciform lesions occur at the macula, causing loss of central vision.

 

disciform

Macular disciform scar with discrete irregular margins

 

Eccentric disciform lesion

Eccentric disciforms usually occur temporally (that is, on the lateral side of the back of the eye, towards the temple). They are usually

  • associated with haemorrhages and exudates
  • irregular
  • asymptomatic and resolve spontaneously, without treatment.

 

eccentric_disciform

Eccentric disciform with fresh haemorrhages and exudates

 

Age-related, eccentric RPE detachment

This lesion may resemble uveal melanoma but has:

  • discrete margins
  • smooth surface
  • low internal acoustic reflectivity on ultrasonography
  • associated features such as haemorrhages and exudates in some patients

eccentric_rpe_detachment

Eccentric RPE detachment with discrete margins