Observation of the peripapillary watershed zones in glaucoma by indocyanine green angiography
- VernacularTitle:吲哚青绿血管造影观察青光眼患者的盘周脉络膜血液供应分水带
- Author:
Wei CHEN
;
Lingling WU
;
Zhaoan SU
- Publication Type:Journal Article
- Keywords:
indocyanine green/diagnostic use;
Glaucoma
- From:
Chinese Journal of Ocular Fundus Diseases
2000;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the location of the watershed zones of the choroidal blood supply relative to the optic disc in glaucoma by indocyanine green angiography, and to investigate the mechanisms in the development of glaucomatous neuropathy. Method Simultaneous ICGA and FFA were performed on 31 eyes of 31 patients with glaucoma (17 of POAG, 14 of NTG) and 37 eyes of 37 control subjects. The watershed zones were classified into three types according to their location relative to the optic disc: by type Ⅰ, no watershed zone around the optic disc; type Ⅱ, the optic disc surrounded partially by watershed zone; type Ⅲ, the optic disc surrounded completely by watershed zone. Each of the watershed zone types was scored (i.e., type Ⅰ=1, type Ⅱ=2, type Ⅲ=3). Results In 87.1% of the glaucomatous eyes, the watershed zones included or partially included the optic disc. However, the figure in the control group was 56.8%. The glaucoma group had a higher score of watershed zone type than the control group. Conclusions The mechanisms in the development of glaucomatous neuropathy are correlative to the choroidal blood supply around the optic disc.
