Astigmatism Post-trabeculectomy

The Effect of Trabeculectomy on Astigmatism.

The aim of this project:

1. Confirming the modification in corneal astigmatism after trabeculectomy with MMC and intracameral administration of bevacizumab.
2. Medium-term follow up (6 months) of the induced corneal astigmatism.
3. Investigating correlations between postoperative astigmatism, particularly with the postoperative IOP.

Inclusion Criteria:

• Primary open angle glaucoma
• Normal tension glaucoma
• Pseudoexfoliation glaucoma
• Pigment dispersion glaucoma

Exclusion Criteria:

• Patients who refuse to sign the informed consent.
• Patients with primary angle closure glaucoma (PACG).
• Patients younger than 18 years old.
• Other ocular diseases besides glaucoma.
• Significant corneal opacities.
• Refractive error more than + or -6.00 diopters.
• Visual acuity less than 0.05
• Previous intra-ocular surgery (except cataract surgery more than six months preceding the trabeculectomy).
• Laser treatment for glaucoma within 6 months of the surgery.