抗核抗体、类风湿因子均阴性。

Antinuclear antibody and rheumatoid factor were negative in both periods.

类风湿结切也可见于内脏，如肺胸膜上。

Rheumatoid nodules may also appear viscerally, such as on the pleura of the lung.

多关节炎型13例，3例类风湿因子（RF）阳性均出现关节畸形。

There were 13 polyarthritis and 3 cases of them were RF positive, who had developed severe destructive arthritis.

结论：干眼症患者白内障手术后易出现角膜上皮缺损，尤其是伴类风湿因子阳性的患者。

Conclusions: Cornea epithelial deficiency is a common complication in dry eye patients after cataract surgery, especially in patients with rheumatoid factor positive.