Table 1

Preoperative characteristics of patients with RRD and surgical procedures before propensity score matching among primary success cases

Gas*
(n=2042)
Silicone oil*
(n=55)
P value§
GenderMale1376 (67.38%)40 (72.73%)<0.001
Age (years)59.69±11.6159.04±17.650.373
History typeNone1608 (78.75%)36 (65.45%)0.017
Vitrectomy excluding retinal detachment surgery18 (0.88%)2 (3.64%)
Intraocular surgery excluding vitrectomy373 (18.27%)17 (30.91%)
Photocoagulation for retinal break43 (2.11%)0 (0.00%)
RRD typeRelated to posterior vitreous detachment1699 (83.20%)30 (54.55%)<0.001
Related to atrophic hole143 (7.00%)4 (7.27%)
Related to atopic dermatitis30 (1.47%)5 (9.09%)
Retinal detachment with macular hole related to myopia52 (2.55%)5 (9.09%)
Retinal detachment with macular hole not related to myopia7 (0.34%)0 (0.00%)
Related to retinal break at or near vitreous base7 (0.34%)0 (0.00%)
Related to intraocular surgery57 (0.28%)3 (5.45%)
Hereditary6 (0.29%)1 (1.82%)
Traumatic41 (2.01%)7 (12.73%)
Lens statusPhakia406 (19.88%)15 (27.27%)0.282
Aphakia0 (0.00%)0 (0.00%)
Pseudophakia1636 (80.12%)40 (72.73%)
Onset to surgery (days)12.60±34.7634.05±70.910.017
Type of surgeryWith scleral buckling92 (4.51%)20 (36.36%)0.008
Combined cataract surgery+1389 (68.02%)29 (52.72%)0.025
*If the variables are continuous, we present the means±SD deviation. And if those are categorical, we present the number and the proportion.
§P values of continuous variables are calculated by Mann-Whitney U test and those of categorical variables are calculated by χ2 test if the minimum number is >5 and Fisher’s exact test if the minimum number is less or equal to 5. We determine that if p values are <0.05, the values are statistically significant.
  • RRD, rhegmatogenous retinal detachment.