According to Dr. Thomas W. Samuelson, MD, Cataract removal surgery may be a viable option for lowering Intraocular pressure (IOP) in some glaucoma patients.
Intraocular pressure is mainly determined by the coupling of the production of aqueous humor and the drainage of aqueous humor mainly through the trabecular meshwork located in the anterior chamber angle. IOP creats ocular hypertension, which is the most important risk factor for glaucoma.
Dr. Samuelson warns that, cataract surgery might not cure most of the cases, but study shows that it may be an incremental step to achieve some logical success.
Recent studies have suggested that cataract surgery lowers IOP proportionally to preoperative IOP. Glaucoma patients with an IOP greater than 20 mm Hg who undergo cataract extraction may have their pressure lowered by as much as 20% to 30% postoperatively.
Dr. Samuelson suggests that :–
- Glaucoma surgeons may wish to view cataract surgery alone as part of the management strategy
- Extraction should be considered in visually significant cataract or in the face of a bad refractive error
- Surgery should probably be performed before glaucoma surgery that bypasses the trabecular meshwork
- Cataract surgery alone may be most the appropriate procedure for patients with modestly uncontrolled or controlled glaucoma
- Certain cases may warrant combined phacotrabeculectomy, such as patients with a high risk of glaucoma progression.
Source: OSN Super Site