Reduced ocular blood flow in asymmetric glaucoma: cause or effect?

Area of Science:

• Ophthalmology
• Vascular Imaging
• Glaucoma Research

Background:

• Chronic angle-closure glaucoma (CACG) is characterized by elevated intraocular pressure and optic nerve damage.
• The hemodynamic profile of the optic nerve in CACG is not well-established.
• Carotid Doppler is a non-invasive technique to assess blood flow velocity and vascular resistance.

Observation:

• A 48-year-old female patient with markedly asymmetric CACG was evaluated using carotid Doppler.
• The patient exhibited reduced blood flow in the ophthalmic artery of the more severely affected eye.
• Color Doppler imaging was utilized for detailed hemodynamic assessment.

Findings:

• Carotid Doppler demonstrated reduced blood flow in the central retinal arteries and short posterior ciliary arteries.
• A correlation was observed between the degree of CACG asymmetry and ophthalmic artery blood flow reduction.
• Hemodynamic alterations in the glaucomatous optic nerve were visualized.

Implications:

• Color Doppler imaging can clarify hemodynamic changes associated with the glaucomatous optic nerve.
• Vascular aspects of CACG and its management can be better identified using this imaging modality.
• This case highlights the potential of carotid Doppler in evaluating vascular contributions to glaucoma.