New thoughts on the correction of presbyopia for divers.
Some new ideas on the correction of presbyopia for divers, particularly those with demands for critical near vision underwater, are discussed. Progressive lenses cannot be satisfactorily bonded to a dive mask, so efforts to mimic the properties of  progressive lenses using bifocal lenses are described.
Clinical optometrist in private practice and an elected full member of SPUMS, P O Box 79, Napier 4140, New Zealand, Phone: +64-(0)6-835-1234, Fax: +64-(0)6-835-5002, E-mail: qbennett@oceanfocus.co.nz.
Quentin M
QM
Bennett