RT Journal Article SR Electronic T1 Serum complement components in patients with trachoma. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 707 OP 710 DO 10.1136/bjo.69.9.707 VO 69 IS 9 A1 D K Sen A1 G S Sarin A1 M Hiranandani A1 U K Baveja YR 1985 UL http://bjo.bmj.com/content/69/9/707.abstract AB Serum C1q, C3, C4, and C5 components of complement levels were measured in 56 healthy subjects and 98 patients with trachoma. Serum C1q and C3 levels were found to be significantly low in stages II and III. There was no change in serum C4 and C5 levels in any of the stages. The levels of C1q and C3 complement components in serum in stages II and III returned to normal as the disease resolved following the medical treatment.