Cataract extraction in patients with primary congenital glaucoma

Area of Science:

• Ophthalmology
• Genetics
• Glaucoma Research

Background:

• Primary congenital glaucoma (PCG) is a rare, severe form of glaucoma presenting at birth.
• Cataract development is a known complication of PCG and its treatments.
• Understanding cataract extraction incidence and outcomes in PCG is crucial for patient management.

Purpose of the Study:

• To determine the incidence and risk factors for cataract extraction in patients with PCG.
• To evaluate the surgical outcomes and complications associated with cataract extraction in this population.
• To identify predictors for requiring cataract surgery in PCG patients.

Main Methods:

• A retrospective cohort study included 108 patients diagnosed with PCG.
• Data collected included age at cataract extraction, intraocular pressure, glaucoma surgeries, CYP1B1 gene mutations, and visual acuity.
• Pre- and postoperative outcomes, including intraocular pressure and complications, were analyzed for patients undergoing cataract extraction.

Main Results:

• 16.2% of eyes (24 patients) required cataract extraction, with a median age of 12.94 years.
• Antiglaucomatous surgeries (HR 1.48) and valvular implants (HR 2.78) were significant risk factors for cataract extraction.
• Common complications included intraocular pressure decontrol (13 eyes) and capsular fibrosis (7 eyes); 66.67% of eyes showed improved visual acuity post-surgery.

Conclusions:

• Cataract extraction is frequently needed in PCG patients, often beyond pediatric age.
• Increased antiglaucomatous surgeries, particularly valvular implantation, heighten the risk of cataract extraction.
• Despite a high complication rate, cataract extraction offers significant visual improvement in PCG patients.