Abstract
Purpose::
To evaluate the retinal morphology by optical coherence tomography (OCT) in patients undergoing re-treatment with photodynamic therapy (PDT) and assess its correlation with fluorescein angiography (FA) at 3 monthly follow-ups.
Methods::
34 eyes were analysed, the decision to re-treat was based on evidence of leakage on FA and had undergone OCT prior to re-treatment with PDT. The OCT patterns were classified into: inner retinal cystoid spaces; diffuse intra-retina fluid; subretinal fluid and a combination of subretinal fluid iwth intra-retinal fluid.
Results::
The presence of inner retinal cystoid spaces was seen in 15 eyes (44.11%), diffuse intraretinal fluid was noted in10 eyes (29.41%) and combination of intra-retinal and sub-retinal fluid was seen in 9 eyes (26.47%). No eyes with subretinal fluid only required treatment.
Conclusions::
The persistence of leakage seen on FA at 3 monthly follow-ups corresponded mostly with presence of intra-retinal fluid, predominantly as inner cystoid spaces by OCT indicating the need for re-treatment.
Keywords: choroid: neovascularization