Comparing like with like: a prospective study of hydrogel and polymethylmethacrylate lenses.
Percival
S P
SP
Scarborough Hospital, Yorkshire, UK.
D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D007910:Lenses, Intraocular; D008768:Methylmethacrylates; D008875:Middle Aged; D011102:Polyhydroxyethyl Methacrylate; D011109:Polymethacrylic Acids; D011446:Prospective Studies
D008768:Methylmethacrylates; D011109:Polymethacrylic Acids; D011102:Polyhydroxyethyl Methacrylate