Changes in ocular morphology after cataract surgery in open angle glaucoma patients

Area of Science:

• Ophthalmology
• Glaucoma Research
• Cataract Surgery Outcomes

Background:

• Cataract surgery is a common procedure with potential effects on intraocular pressure (IOP) and anterior segment morphology.
• Open-angle glaucoma (OAG) is a progressive optic neuropathy often managed alongside cataract.
• Understanding the impact of cataract surgery on eyes with and without OAG is crucial for patient management.

Purpose of the Study:

• To compare preoperative and postoperative intraocular pressure (IOP) and anterior chamber angle (ACA) parameters in cataract patients with and without OAG.
• To evaluate the influence of cataract surgery on ocular biometry, including axial length (AL), in these patient groups.
• To investigate correlations between changes in anterior chamber depth (ACD) and ACA parameters post-surgery.

Main Methods:

• Prospective observational case-control study involving 15 eyes with cataract and OAG, and 25 eyes with cataract only.
• Comprehensive ophthalmic evaluation including IOP measurement, ocular biometry, and anterior segment optical coherence tomography (AS-OCT).
• AS-OCT was used to measure ACA parameters preoperatively and at 6 months postoperatively.

Main Results:

• Patients with OAG experienced a significantly greater absolute reduction in IOP compared to the control group.
• Both groups showed significant increases in anterior chamber depth (ACD) and ACA width postoperatively.
• Axial length (AL) shortened postoperatively in the control group (cataract only) but remained stable in the OAG group.

Conclusions:

• Cataract surgery leads to a more pronounced IOP reduction in patients with coexisting OAG.
• Anterior chamber parameters like ACD and ACA improve after cataract surgery in both OAG and non-OAG patients.
• The correlation between ACD changes and ACA parameters post-surgery differs between OAG and non-OAG cataract patients.