Intraocular hemorrhages: a hemostatic therapeutic approach

Area of Science:

• Ophthalmology
• Hemostasis
• Vascular Biology

Background:

• Intraocular hemorrhages, including hyphemas and subretinal hemorrhages, are often associated with disturbed local hemostasis.
• Factors contributing to recurrent bleeding include blood dilution, high local fibrinolytic activity, and anticoagulant effects of fibrin degradation products (FDP).
• Understanding these hemostatic challenges is crucial for developing effective therapeutic strategies.

Purpose of the Study:

• To review the role of local hemostatic factors in intraocular hemorrhages.
• To evaluate the potential of hemostatic agents, particularly fibrinolytic inhibitors, in managing hyphemas and subretinal hemorrhages.

Main Methods:

• Review of existing literature on hemostasis in intraocular bleeding.
• Analysis of factors contributing to recurrent bleeding in hyphemas and subretinal hemorrhages.
• Discussion of therapeutic implications based on identified hemostatic mechanisms.

Main Results:

• Identified three key factors disrupting hemostasis in intraocular hemorrhages: spontaneous lysis of hemostatic plugs due to dilution, premature dissolution by fibrinolytic activators, and anticoagulant action of FDP.
• These factors predispose patients to recurrent bleeding episodes.
• The findings support the rationale for using agents that counteract fibrinolysis.

Conclusions:

• The complex interplay of local hemostatic factors contributes significantly to recurrent intraocular bleeding.
• Fibrinolytic inhibitors show promise as a targeted therapy for managing hyphemas and subretinal hemorrhages.
• Further investigation into hemostatic agents is warranted for improved treatment outcomes.