Table 2.

Preoperative, operative, and postoperative comparability of surgical procedures in primary trabeculectomy (PT) and multiple treatment (MT) groups^*

Variable	PT group	MT group
Preoperative intraocular pressures	Higher	Lower
Consultant performed surgery	8%	20%
Shallow postoperative anterior chambers	23%	6%

^*PT group has less than 8 weeks of medical treatment. MT group has 1 to 17 years of medical treatment.