26 Questions
What is the primary purpose of the Brien Holden Vision Institute's publication on Surgical treatments for Primary Open Angle Glaucoma?
To provide general information on glaucoma surgical treatments
What is the primary mechanism of intraocular pressure reduction in laser trabeculoplasty?
Increased aqueous outflow through the trabecular meshwork
What is the name of the laser used in trabeculoplasty to improve intraocular pressure reduction?
Argon laser
What is the expected outcome of successful glaucoma surgery?
Significant reduction in intraocular pressure
What is the role of the trabecular meshwork in the eye?
To regulate aqueous outflow
What is the primary benefit of laser trabeculoplasty compared to other glaucoma surgeries?
Less invasive procedure
What is the primary purpose of laser therapy and surgery in glaucoma treatment?
To selectively target one or more structures of the eye to reduce IOP
What is the expected IOP reduction following laser trabeculoplasty?
20-25%
What is the usual environment for performing laser trabeculoplasty procedures?
Outpatient surgery center or hospital clinic
What is the focus of the laser beam in ALT?
The junction of the pigmented and non-pigmented portion of the TM
What is the typical outcome of ALT in terms of IOP reduction?
IOP reduction in 75% of cases
What is the usual scenario for treating the TM with ALT?
Treating half the TM first and the other half in a separate session
What is the potential outcome of repeated ALT procedures?
Decreased effectiveness of subsequent procedures
What is the key consideration when choosing a treatment for glaucoma?
Minimizing risks and maximizing benefits to the patient
What is the goal of incisional surgical techniques in POAG?
To increase the outflow of aqueous humor
What is the primary function of the trabecular meshwork in glaucoma treatment?
To increase the outflow of aqueous humor
What is the primary goal of Argon Laser Trabeculoplasty (ALT) in patients with primary open-angle glaucoma?
To increase aqueous outflow by creating burns in the trabecular meshwork
What is the advantage of Selective Laser Trabeculoplasty (SLT) compared to ALT?
It targets specific pigmented cells in the trabecular meshwork
What is the typical energy delivery range of the Q-switched Nd:YAG laser used in SLT?
0.4-1.0 mJ over 3-4 nanoseconds
What is the short-term success rate of SLT in terms of intraocular pressure reduction?
6-9 mm Hg drop
What is the approximate failure rate of ALT in controlling intraocular pressure in the first year?
20-30%
What is the primary mechanism of action of filtering procedures in glaucoma surgery?
Creating a channel from the anterior chamber to the sclera
What is the purpose of anti-metabolite therapy in glaucoma surgery?
To reduce the risk of bleb failure
What is the primary mechanism of action of the Trabectome procedure?
Creating a direct communication between the anterior chamber and Schlemm's canal
What is the primary goal of cyclophotocoagulation in glaucoma treatment?
To reduce the production of aqueous humor
What is the purpose of the Solx Gold Shunt in glaucoma surgery?
To redirect fluid from the anterior chamber to the suprachoroidal space
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