Vitreous & Retina

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Macular Diseases
Degenerative Myopia

  • Progressive retinal and choroidal degeneration in myopic eyes of at least - 6.00 Diopter refractive errors with an axial length of more than 26 mm.
  • Progressive chorioretinal stretching results in characteristic fundus findings :
    • Optic disc crescent, area of depigmentation due to dragging of the choroids and RPE from the optic nerve
    • Ruptures of Bruch's membrane (lacquer crack)
    • Focal areas of chorioretinal atrophy
    • Localized ectasia involving the sclera, the pigment epithelium and the choroid (posterior staphyloma)
    • Oval with vertical axis and slightly tilted optic disc
    • Localized areas of pigment epithelial proliferation (Foerster-Fuchs spots)
    • Lattice degeneration in the pre-equatorial area may be found
    • Thinning of the RPE and the choriocapillaris give a 'tigroid' or 'tesselated' fundus appearance
  • Complications:
    • Earlier onset posterior vitreous detachment
    • Small macular hemorrhage
    • Macular hole
    • Posterior retinal detachment
    • Choroidal neovascularization (CNV)
  • Fluorescein angiogram is helpful to reveal choroidal neovascularization.
  • Management:
    • Laser photocoagulation for selected cases of CNV
    • Posterior scleral buckling for posterior retinal detachment

Copyright © 2003 Digital Reference of Ophthalmology. All rights reserved. All material published on this website is the property of Digital Reference of Ophthalmology and cannot be duplicated without permission.
Home Search Home Search