Nasolacrimal transition time in patients with multiple sclerosis

Area of Science:

• Ophthalmology
• Neurology

Background:

• Multiple Sclerosis (MS) is a chronic neurological disease affecting the central nervous system.
• Nasolacrimal transition time, the duration for tear clearance, has not been extensively studied in MS patients.
• Understanding tear dynamics may offer insights into ocular complications in MS.

Purpose of the Study:

• To measure and compare nasolacrimal transition time in patients with Multiple Sclerosis (MS) versus healthy individuals.
• To investigate the correlation between MS-related disability, measured by the Expanded Disability Status Scale (EDSS), and nasolacrimal transition time.

Main Methods:

• A cohort of 37 relapsing-remitting MS patients and 36 healthy controls was recruited.
• Nasolacrimal transition time was assessed using fluorescein drops in both groups.
• The Expanded Disability Status Scale (EDSS) was used to quantify disability in MS patients.

Main Results:

• MS patients exhibited a significantly prolonged median nasolacrimal transition time (240s) compared to healthy controls (58.5s) (p < 0.001).
• A positive correlation was observed between higher EDSS scores and longer nasolacrimal transition times in MS patients (r=0.384, p=0.019).

Conclusions:

• Nasolacrimal transition time is prolonged in individuals with Multiple Sclerosis.
• A direct relationship exists between the severity of MS-related disability and prolonged nasolacrimal transition time.
• These findings may illuminate the pathogenesis of recurrent infections in MS patients and warrant further investigation.