Effects of Phacoemulsification and Intraocular Lens Implantation on Intraocular Pressure in Primary Angle Closure Glaucoma (PACG) Patients
Nusara Yudhasompop MD*, Boonchai Wangsupadilok MD*
Affiliation : * Department of Ophthalmology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla,Thailand
Objective : To investigate the effect of cataract surgery by phacoemulsification on the intraocular pressure (IOP) in primary
angle closure glaucoma (PACG) patients.
Material and Method: Sixty PACG patients who underwent phacoemulsification between January 2004 and May 2009 were
retrospectively reviewed. Pre- and post-operative visual acuity, IOP, and number of anti-glaucoma medications were recorded.
Lens thickness and anterior chamber depth (ACD) of pre-operative were also recorded. Patients who had previous intraocular
surgeries or complicated cataract surgeries were excluded.
Results : Visual acuity logMAR improved significantly (0.17, p < 0.01). Mean IOP after cataract surgery decreased significantly
(4.50 mmHg, p < 0.01). There was no significant relationship between the decrease in IOP and lens thickness or ACD. Twenty
percent of PACG patients were free of antiglaucoma medication after cataract surgery.
Conclusion : Phacoemulsification not only improves the visual acuity in PACG patients but also reduces IOP and number of
anti-glaucoma medications required significantly. The change in IOP does not significantly correlate with lens thickness or
ACD.
Keywords : Phacoemulsification, Primary angle closure glaucoma, Intraocular pressure, Lens thickness, Anterior chamber depth
