Nailfold capillary morphology and platelet function in patients with exfoliative glaucoma

Area of Science:

• Ophthalmology
• Microcirculation Research
• Hematology

Background:

• Exfoliative glaucoma (XFG) is a significant cause of vision loss.
• Nailfold capillaroscopy is a non-invasive method to assess microvascular changes.
• Platelet parameters may offer insights into glaucoma pathophysiology.

Purpose of the Study:

• To evaluate nailfold capillary morphology in XFG patients.
• To compare these features with primary open-angle glaucoma (POAG), exfoliation syndrome (XFS), and normal controls (NC).
• To investigate platelet count (PLT), mean platelet volume (MPV), platelet distribution width (PDW), and plateletcrit (PCT) in XFG patients.

Main Methods:

• A case-control study involving 152 glaucoma patients.
• Nailfold capillaroscopy was performed to assess capillary morphology.
• Hemogram parameters including platelet indices were analyzed and compared across groups.

Main Results:

• Significant differences in capillary diameter, tortuosity, loop distribution, and avascular zones were observed between XFG and POAG/NC groups.
• XFG patients exhibited lower PLT values compared to POAG patients.
• XFG patients showed lower PLT and higher MPV compared to NC and POAG.

Conclusions:

• This study is the first to examine capillary morphology and comprehensive platelet parameters in newly diagnosed XFG.
• Findings indicate nailfold capillary morphological vascular changes in XFG patients.
• Further research is needed to understand the clinical implications of these microvascular abnormalities in XFG.