Definition, Classification, and Pathophysiology of Canine Glaucoma

Area of Science:

• Ophthalmology
• Veterinary Medicine
• Genetics

Background:

• Glaucoma is a prevalent ocular condition in humans and dogs, characterized by optic nerve degeneration and irreversible blindness.
• Primary glaucoma encompasses a spectrum of spontaneous, heterogeneous diseases with complex pathogenesis.
• Disease manifestation is significantly influenced by aging and oxidative stress, affecting both human and canine populations.

Purpose of the Study:

• To elucidate the multifaceted pathogenesis of primary glaucoma.
• To explore the variability in clinical phenotypes across different human ethnic groups and canine breeds.
• To understand the role of aging and oxidative stress in glaucoma development.

Main Methods:

• Review of existing literature on glaucoma pathogenesis.
• Comparative analysis of clinical presentations in humans and dogs.
• Investigation of cellular and biochemical pathways involved in optic nerve and trabecular meshwork damage.

Main Results:

• Primary glaucoma exhibits diverse and challenging-to-classify phenotypes due to multiple contributing factors.
• Aging and oxidative stress are identified as critical triggers for glaucoma onset.
• Intertwined inflammatory and biochemical cascades disrupt ocular physiology, leading to vision loss.

Conclusions:

• Glaucoma pathogenesis is multifactorial, with significant variations across species and breeds.
• Effective classification and treatment strategies require a deeper understanding of these complex mechanisms.
• Targeting aging and oxidative stress pathways may offer therapeutic potential for preventing or slowing glaucoma progression.