Hypotony as a Hazard of Trabeculectomy with Mitomycin C

An eighty two year old Caucasian lady with primary open angle glaucoma attended eye clinic. She was using guttate latanoprost 50 g/ml, Brimonidine 2 mg/ml and combined Dorzolamide 20 g/ml and Timolol 5 mg/ml.

This lady was myopic with right eye manifest refraction spherical equivalent of -2.00 and left eye manifest refraction spherical equivalent of -8.00 dioptres. The left eye was amblyopic as a result of this anisometropia. This lady had had bilateral uncomplicated cataract extractions by phacoemulsification with intraocular lens implantation and subsequently bilateral neodymium yttrium aluminium garnet or Nd: YAG laser posterior capsulotomies.

This patient had a medical history of pulmonary tuberculosis and pulmonary fibrosis. She also had aortic valve regurgitation and osteoarthritis. Her regular medications were Digoxin 125 μg, Bumetanide 1mg and Lisinopril 1mg daily. She utilized supplementary oxygen for 16 hours daily.