Tear lactoferrin concentration during postoperative ocular inflammation in cataract surgery

Area of Science:

• Ophthalmology
• Immunology
• Biochemistry

Background:

• Lactoferrin, an iron-binding glycoprotein, possesses known antibacterial and anti-inflammatory properties.
• Tear film composition plays a crucial role in ocular surface health and defense mechanisms.
• Cataract surgery can potentially alter the ocular surface environment and immune status.

Purpose of the Study:

• To investigate the dynamic changes in tear lactoferrin concentration following cataract surgery.
• To explore the relationship between tear lactoferrin levels and tear secretion rate postoperatively.
• To assess the implications of these changes on ocular defense mechanisms.

Main Methods:

• Enzyme-linked immunosorbent assay (ELISA) was utilized to quantify tear lactoferrin concentration.
• Tear secretion rate was measured using a modified Schirmer I test (1 min).
• Data were collected from 30 patients undergoing cataract surgery over a 7-day postoperative period.

Main Results:

• A significant decrease in tear lactoferrin concentration was observed on the first day after surgery.
• Tear lactoferrin levels gradually returned to baseline values within the 7-day observation period.
• An inverse linear relationship was found between tear lactoferrin concentration and tear secretion rate.

Conclusions:

• Tear lactoferrin concentration undergoes significant, transient changes after cataract surgery.
• The observed inverse relationship suggests a stable secretion rate of lactoferrin by tear glands.
• Understanding these lactoferrin dynamics may provide insights into the eye's susceptibility to infection following surgical procedures.