Diagnostic bitoric rigid gas permeable contact lenses.
OBJECTIVE
To simplify the fitting of bitoric rigid gas permeable (RGP) contact lenses.


METHODS
We prescribed bitoric RGP lenses using two kinds of diagnostic lenses at random. One type of lens was a diagnostic polymethylmethacrylate (PMMA) spherical lens and the other was a diagnostic RGP bitoric lens.


RESULTS
The bitoric RGP lenses that were prescribed using a diagnostic bitoric lens required fewer parameter changes compared with the bitoric RGP lens prescribed using a diagnostic PMMA spherical lens.


CONCLUSIONS
The diagnostic RGP bitoric lens simplifies the prescription of bitoric RGP lenses and is very useful in fitting astigmatic corneas.
Kajita
M
M
Department of Ophthalmology, Fukushima Medical University, School of Medicine, Fukushima-ken, Japan.
Ito
S
S
Yamada
A
A
Ito
Y
Y
Kato
K
K
D000293:Adolescent; D000328:Adult; D001251:Astigmatism / Q000628:therapy*; D003261:Contact Lenses; D005139:Eyeglasses; D006801:Humans; D019904:Polymethyl Methacrylate; D017755:Prosthesis Fitting / Q000379:methods*; D014792:Visual Acuity
D019904:Polymethyl Methacrylate