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[Disorders of the blood-aqueous barrier after phacoemulsification]
Li-xia Luo1, Yi-zhi Liu, Xin-yu Zhang
1Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
Insights
The blood-aqueous barrier, crucial for eye health, typically recovers within 90 days after cataract surgery using phacoemulsification and intraocular lens implantation. Laser flare cell meter measurements confirm this barrier function restoration.
Area of Science:
- Ophthalmology
- Biomedical Engineering
Context:
- Cataract surgery, specifically small incision phacoemulsification with intraocular lens (IOL) implantation, is a common procedure.
- The integrity of the blood-aqueous barrier (BAB) is vital for maintaining the health of the anterior segment of the eye.
- Assessing BAB status post-surgery is important for understanding recovery and potential complications.
Purpose:
- To quantitatively assess the status of the blood-aqueous barrier following small incision phacoemulsification with foldable intraocular lens implantation.
- To evaluate the recovery timeline of the blood-aqueous barrier after this surgical procedure.
Summary:
- A laser flare cell meter was used to measure anterior chamber flare intensity in 64 eyes before and after cataract surgery.
- Flare values significantly increased on days 1, 7, and 30 post-surgery, indicating temporary BAB disruption.
- The blood-aqueous barrier demonstrated recovery by day 90, with no influence from patient age, gender, or eye laterality, though iris prolapse correlated with higher initial flare values.
Impact:
- Establishes laser flare cell photometry as a reliable method for quantifying BAB status after phacoemulsification.
- Provides quantitative data on the typical recovery period for the blood-aqueous barrier post-surgery.
- Highlights that BAB disruption after phacoemulsification is generally transient and resolves relatively quickly.
Objective:
To determine the status of blood-aqueous barrier after small incision phacoemulsification with implantation of foldable intraocular lens.
Methods:
The blood-aqueous barrier status in 64 eyes of 60 patients who underwent cataract surgery was examined using a laser flare cell meter. The protein level of anterior chamber aqueous humor was evaluated by measurement of the flare value preoperatively and postoperatively.
Results:
The mean preoperative flare intensity was (6.94 +/- 0.34) photon counts/ms, which increased to (26.27 +/- 1.37), (13.96 +/- 1.05), (9.07 +/- 0.43) and (7.16 +/- 0.27) photon counts/ms on days 1, 7, 30 and 90 after the surgery, respectively. Significantly statistical differences on flare values were found between preoperative data and those on days 1, 7 and 30 after surgery. The blood-aqueous barrier was recovered on day 90 postoperatively. The variables such as age, gender, eye (left/right) had no influence on the flare value. Patients with iris prolapse had a higher flare value at day 1 and day 7 after the surgery.
Conclusions:
Blood-aqueous barrier after phacoemulsification with implantation of intraocular lens can be measured quantitatively by the laser flare cell meter. The blood-aqueous barrier disorders can be recovered shortly after phacoemulsification.
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