- Email: [email protected]
A riddle solved
SURVEY OF OPHTHALMOLOGY
VOLUME 29
TIME OPH
l
NUMBER I
l
JULY-AUGUST
1984
BENJAMIN MILDER, EDITOR
A Riddle
Thespian
What’s the relation twixt pressure and field? This is a riddle that seems not to yield to statistical studies that scientists wield. Yet, until it is solved, can glaucoma be healed?
Thespians make great demands On their lacrimating glands. They make tears gush forth in a torrent . . . Now they’re crying, now they aren’t And when we ask them how they do it They tell us that there’s nothing to it.’ The tears are real and they don’t feign it . . . Unhappily, we can’t explain it.
A Riddle Solved If the change in the pressure’s sufficiently great A change in the field will strongly relate; If improvement’s not seen in the visual field It’s unlikely glaucoma will ever be healed. GEORGE L. SPAETH
When asked, we answer - with straight faces “It’s on a psychogenic basis.” BEN MILDER ST. LOUIS, MISSOURI
PHILADELPHIA, PENNSYLVANIA
LETTERS To the editor: Dr. Creig Hoyt’s comment on nuclear magnetic resonance (NMR) imaging (SUYU Ophthalmol28:354, 1984) stated that NMR “does not use radiation as its energy source for scanning.” I’m sure what he meant to say was that radio-frequency (RF) radiation rather than ionizing radiation is used. This is long wavelength low photon radiation, which is, of course, much safer than ionizing radiation.
To the editor: I would like to make a small correction in the excellent paper by Michael Kass [Suru Ophthalmol 28(suppl):229-232, 19831 on treatment of ocular hypertension. Table 1, which reviews multivariate analysis studies, indicates that we found “no age effect,” whereas it should have indicated that we did not test for this parameter. We did not look at age because the samples were matched for age; thus, the implication that we found no age effect is entirely wrong.
SIDNEY LERMAN ATLANTA, GEORGIA
STEPHEN M. DRANCE VANCOUVER, B.C.,
CANADA
92
VOLUME 29
TIME OPH
l
NUMBER I
l
JULY-AUGUST
1984
BENJAMIN MILDER, EDITOR
A Riddle
Thespian
What’s the relation twixt pressure and field? This is a riddle that seems not to yield to statistical studies that scientists wield. Yet, until it is solved, can glaucoma be healed?
Thespians make great demands On their lacrimating glands. They make tears gush forth in a torrent . . . Now they’re crying, now they aren’t And when we ask them how they do it They tell us that there’s nothing to it.’ The tears are real and they don’t feign it . . . Unhappily, we can’t explain it.
A Riddle Solved If the change in the pressure’s sufficiently great A change in the field will strongly relate; If improvement’s not seen in the visual field It’s unlikely glaucoma will ever be healed. GEORGE L. SPAETH
When asked, we answer - with straight faces “It’s on a psychogenic basis.” BEN MILDER ST. LOUIS, MISSOURI
PHILADELPHIA, PENNSYLVANIA
LETTERS To the editor: Dr. Creig Hoyt’s comment on nuclear magnetic resonance (NMR) imaging (SUYU Ophthalmol28:354, 1984) stated that NMR “does not use radiation as its energy source for scanning.” I’m sure what he meant to say was that radio-frequency (RF) radiation rather than ionizing radiation is used. This is long wavelength low photon radiation, which is, of course, much safer than ionizing radiation.
To the editor: I would like to make a small correction in the excellent paper by Michael Kass [Suru Ophthalmol 28(suppl):229-232, 19831 on treatment of ocular hypertension. Table 1, which reviews multivariate analysis studies, indicates that we found “no age effect,” whereas it should have indicated that we did not test for this parameter. We did not look at age because the samples were matched for age; thus, the implication that we found no age effect is entirely wrong.
SIDNEY LERMAN ATLANTA, GEORGIA
STEPHEN M. DRANCE VANCOUVER, B.C.,
CANADA
92