Macular thickness after glaucoma filtration surgery.

Area of Science:

• Ophthalmology
• Glaucoma Surgery
• Macular Edema

Background:

• Glaucoma filtration surgery aims to reduce intraocular pressure.
• Postoperative macular changes after surgery require monitoring.

Purpose of the Study:

• To analyze early postoperative macular changes using optical coherence tomography (OCT) after uncomplicated glaucoma filtration surgery.
• To investigate the impact of medications and mitomycin C on these changes.

Main Methods:

• Prospective study of 32 patients (34 eyes) with open-angle glaucoma undergoing trabeculectomy.
• Optical coherence tomography (OCT) used for macular thickness analysis at baseline, 2nd day, 1 week, and 1 month post-surgery.

Main Results:

• A slight increase in macular thickness was observed 1 week and 1 month post-surgery compared to baseline and the 2nd day.
• No significant difference in macular thickness changes was found between patients using topical prostaglandins versus other topical medications.
• No significant difference in macular changes was observed between patients treated with or without mitomycin C.

Conclusions:

• Uncomplicated trabeculectomy may lead to a slight, subclinical increase in macular thickness.
• This thickening is likely a physiological response to the sudden reduction in intraocular pressure.
• Macular thickening is a consequence of altered pressure dynamics within the retinal capillaries.