. 2009 Jun 2;3:81–87.

Table 1.

Protocol for the concentration and exposure time of mitomycin C during trabeculectomy based on risk factors for excessive postoperative fibrosis

Risk factors	Value
Age: less than 10 years	3
Age: 10–25 years	2
Age: 25–40 years	1
Age: greater than 70 years	−1
Black	1
Sturge-Weber syndrome	2
Uveitis – inactive	2
Uveitis – active	4
Neovascular glaucoma	4
Repeat filtration (1 trab/no antimetabolites)^§	2
Repeat filtration (1 trab/5-FU)^§	3
Repeat filtration (1 trab/MMC)^§	4
Repeat filtration (2 or more trab)^§	4
PCIOL^* with virgin conjunctiva in 1 or 2 superior quadrants	1
PCIOL^* with scar in superior quadrants	2
ACIOL^† without vitreous in the AC^‡	2
ACIOL^† with vitreous in the AC^‡	3
Aphakia	3
Other surgery with conjunctival scarring	1

Notes: ^*PCIOL, posterior chamber intraocular lens;

^{^†}

ACIOL, anterior chamber intraocular lens;

^{^‡}

AC, anterior chamber;

^{^§}

trab, trabeculectomy;

^{^¶}

Score = sum of risk factor values;

^{^**}

Actual exposure times were adjusted at the time of surgery according to bleeding, scar tissue and thickness of Tenon capsule.