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[Influence of cataract on scanning laser polarimetry]
T Chiba1, S Kogure, S Tsukahara
1Department of Ophthalmology, Yamanashi Medical University, Japan.
Purpose:
To evaluate the influence of cataract on scanning laser polarimetry.
Methods:
Nerve fiber layer thickness (NFLT) around the optic nerve head was measured before and after surgery in 43 eyes of 43 patients with cataract. Phacoemulsification-aspiration and intraocular lens implantation was performed in all eyes.
Results:
The mean NFLT increased 13.41% (p < 0.0001) postoperatively. Positive correlation(rs = 0.56, p = 0.001) was observed between NFLT measurements and cataract degree, using Lens Opacities Classification System III. Significant positive correlation(rs = 0.493, p = 0.004) was observed between NFLT measurements and posterior subcapsular cataract degree.
Conclusion:
Scanning laser polarimetry may underestimate NFLT in individuals with dense cataract.