Optic disc hemorrhage in low-tension glaucoma.

Area of Science:

• Ophthalmology
• Glaucoma Research
• Retinal Vascular Diseases

Background:

• Optic disc hemorrhage (DH) is a recognized clinical sign in glaucoma.
• Its prevalence and epidemiological characteristics vary across different glaucoma subtypes.
• Understanding DH patterns is crucial for patient management and prognosis.

Purpose of the Study:

• To determine the prevalence of optic disc hemorrhage (DH) in various glaucoma types and normal patients.
• To investigate the epidemiological features and recurrence patterns of DH in low-tension glaucoma (LTG).

Main Methods:

• Cross-sectional study comparing DH prevalence in primary open-angle glaucoma, primary angle-closure glaucoma, low-tension glaucoma, and normal patient groups.
• Longitudinal follow-up of LTG patients to assess DH incidence, timing, duration, and recurrence over 6 to 32 months.

Main Results:

• DH was significantly more prevalent in low-tension glaucoma (20.5%) compared to other groups (P < 0.001).
• In LTG, the overall incidence of DH during follow-up was 24.8%, with recurrences observed in 64% of affected eyes.
• Recurrent DHs predominantly occurred within 28 weeks of the prior event, and 92% of DHs persisted for at least four weeks.

Conclusions:

• Low-tension glaucoma exhibits a higher prevalence of optic disc hemorrhage.
• LTG patients may represent distinct clinical groups: those prone to recurrent DH and those unlikely to experience bleeding.
• The timing and recurrence patterns of DH in LTG provide insights into disease mechanisms and progression.