id label x y cluster weight 1881 Clin Exp Optom -0.5304 -0.5927 1 2843 2124 Contact Lens Anterio -0.8457 -0.0499 1 2380 2144 Cornea 0.0927 0.2641 1 11383 2315 Cutan Ocul Toxicol 0.6468 0.6076 2 1009 2969 Eye Contact Lens -0.5292 0.3504 1 2488 4097 Int J Ophthalmol-Chi 0.794 0.0383 2 5280 4599 J Cataract Refr Surg 0.4381 -0.3247 2 13405 5610 J Refract Surg 0.4907 -0.8259 2 4855 6849 Ocul Surf -0.1862 0.6832 1 2303 6924 Optometry Vision Sci -0.3707 -0.1505 1 8194