Related by context. Frequent words. (Click for all words.) 56 bifocal 54 wearers 51 wearer 49 polarized glasses 49 compression stockings 49 lenses 48 contact lenses 48 shutter glasses 47 keratitis 46 multifocal 46 tinted lenses 45 refractive error 45 contact lens wearers 44 rubber soled shoes 44 refractive errors 44 polarized lenses 44 fluoro 44 lens wearers 43 corrective lenses 43 binocular 43 intraocular lens 43 wear 42 personal floatation device 42 active shutter glasses 42 radio collars 42 IOLs 42 lasik 42 earplug 41 prescription eyeglasses 41 eyepieces 41 glasses 41 lens 41 nearsightedness 41 aligners 41 polarized sunglasses 41 Cataract surgery 40 astigmatism 40 headgear 40 open toed shoes 40 Wear sunscreen 40 monocular 40 spinal deformity 40 sunglasses 40 mouthguard 40 prosthesis 40 overshoes 40 upper eyelid 40 aligner 40 insect repellent containing DEET 40 keratoconus 40 phototherapy 40 Wearers 40 goggles 40 Contact Lens 40 compression garments 40 monocle 40 wavefront 40 binocular vision 39 peripheral vision 39 cataract formation 39 bifocals 39 soft soled shoes 39 jogging bottoms 39 bug repellant 39 N# respirators 39 reflective vest 39 N# masks 39 elastics 39 fMRI scanner 39 spectacles 38 compression socks 38 phacoemulsification 38 eyeglass lenses 38 cardiac pacemakers 38 PFDs 38 opaque tights 38 surgical mask 38 eyewear 38 fanny packs 38 winkers 38 dressy casual 38 goggle 38 nystagmus 38 intraocular lenses 38 implant 38 prosthetic 38 gaiters 38 kippa 38 visual acuity 38 prostheses 38 inseam 38 amblyopia 38 soled shoes 38 binaural 37 dosimeter 37 elasticated 37 armholes 37 3D eyewear 37 intraocular 37 ear plugs 37 randomly assign