Table 1. Clinical features of the four IOFB patients.

Parameters	No.1	No.2	No.3	No.4
Age (y)	47	33	55	62
Gender	M	M	M	M
Eye type	OS	OS	OS	OS
Trauma	Scrap iron	Scrap iron	Iron	NA
Injury time	NA	4d	2d	NA
Cataract	Exist	Exist	Exist	Exist
Size of IOFB (mm)	0.6×0.3	2.0×2.4	2.0×0. 6	1.0×1.2
Property	Magnetic	Magnetic	Magnetic	Non-magnetic
Operative time (min)	25	20	18	15
Retinal detachment	No	No	No	No
BCVA before surgery	0.6	Hand motion	0.3	0.6
BCVA after surgery	1.0	0.6	0.8	0.6
IOP before surgery (mm Hg)	42.9	20	19	46.8
IOP after surgery (mm Hg)	12.9	13.5	15.2	14.4
Postoperative complications	No	No	No	High IOP; normal IOP after drainage valve implantation

NA: Not available; IOFB: Intraocular foreign body; BCVA: Best corrected visual acuity; IOP: Intraocular pressure.