title: Lack of a visible outcome marker fuels the perfect storm of Dr Singh's editorial.
authors: Glaucoma Associates of Texas, Dallas, Texas.
authors: Ronald L
authors: RL
authors: Fellman
mesh_terms: D005901:Glaucoma / Q000601:surgery*; D006801:Humans; D019654:Lens Implantation, Intraocular; D018918:Phacoemulsification