Idiopathic polypoidal choroidal vasculopathy in Thai patients with clinical and angiographic choroidal neovascularization

Figures & data

Table 1 Prevalence of IPCV among 129 patients with angiographic CNVs

Final diagnosis	No of patients	Percentage
IPCV	100	77.52
Idiopathic CNV	16	12.40
AMD	12	9.30
RAP	1	0.78
Total	129	100

Abbreviations: IPCV, idiopathic polypoidal choroidal vasculopathy; CNVs, choroidal neovascularizations; AMD, age-related macular degeneration; RAP, retinal angiomatous proliferation.

Figure 1 Fundus findings of most patients in the study.

Notes: Red arrows represent subretinal hemorrhage and white arrows represents subretinal lipid exudate. Drusens are noted in the peripheral fundus (yellow arrows).

Figure 2 Indocyanine green angiographic findings of IPCV lesions: polypoidal lesions with hypofluorescent halos (red arrows) and branching vascular networks (area within yellow dotted line).

Abbreviation: IPCV, idiopathic polypoidal choroidal vasculopathy.

Table 2 The characteristics of patients with IPCV in the study

Characteristics	n	Percentage
Gender (patients)
Male	56	56
Female	44	44
Laterality (patients)
Right eye	44	44
Left eye	49	49
Both eyes	7	7
Location (eyes)
Macular area	79	73.83
Temporal to vascular arcade	14	13.08
Peripapillary area	10	9.35
Macular and peripapillary area	4	3.74
Fundus findings (eyes)
Hemorrhagic pattern	95	88.79
Exudative pattern	12	11.21
ICGA findings (eyes)
BVN and polyps	90	84.11
Only polyps	9	8.41
BVN	8	7.48

Abbreviations: IPCV, idiopathic polypoidal choroidal vasculopathy; ICGA, indocyanine green angiography; BVN, branching venous network.

Table 3 The characteristics of IPCV patients in this study compared to the previous studies

Studies	Patients	Prevalence	Age, mean (years)	Gender	Unilateral eye	Location	Lesions
Ahuja et al^Citation6	British	NA	65.4	Female (65%)	NA	Macular (68%)	Polyps (47%)
Scassellati-Sforzolini et al^Citation7	Italian	9.8%	NA	No difference	78.9%	Extramacular (47.3%)	NA
Yannuzzi et al^Citation8	American	7.8%	NA	No difference	NA	Peripapillary (23.1%)	Polyps
Ladas et al^Citation9	Greek	8.2%	NA	NA	NA	Peripapillary (68.2%)	NA
Lafaut et al^Citation10	Belgian	4%	NA	NA	NA	Macular (49%)	Polyps
Wen et al^Citation11	Chinese	22.3%	NA	Male (73%)	86.6%	Macular (61.9%)	Polyps and BVN (64.3%)
Kwok et al^Citation12	Chinese	9.3%	65.1	Male (68.4%)	84.2%	Macular (63.6%)	Polyps
Liu et al^Citation13	Chinese	24.5%	NA	NA	NA	Macular (61.7%)	NA
Hou et al^Citation22	Chinese	NA	66.1	Male (64%)	83%	Macular (70%)	Polyps
Song et al^Citation14	Korean	22.2%	NA	Male (63%)	90%	Macular (85%)	NA
Byeon et al^Citation15	Korean	24.6%	64.6	Male (78.5%)	75.9%	NA	Exudative (52%)
Anantharaman et al^Citation21	Indian	NA	61.6	Male	91.5%	Subfoveal (42.5%)	Exudative (73%)
Cackett et al^Citation23	Singaporean	NA	68.3	Male (62.4%)	87.8%	Macular (63%)	NA
Sho et al^Citation16	Japanese	23%	68.4	Male (63%)	NA	Macular (85%)	Polyps
Uyama et al^Citation24	Japanese	NA	68	Male (83%)	83%	Macular (93%)	Polyps and BVN
Maruko et al^Citation17	Japanese	54.7%	NA	Male (77.8%)	81%	NA	NA
Chang and Wu^Citation18	Taiwanese	49%	63.6	Male (71.4%)	91.8%	Macular (NA)	Polyps
This study	Thai	77.53%	59.5	Male (56%)	93%	Macular (79%)	Polyps and BVN

Note: No difference refers to no difference between males and females.

Abbreviations: IPCV, idiopathic polypoidal choroidal vasculopathy; NA, not available; BVN, branching venous network.

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