Measurement of corneal thickness by videopachymetry: preliminary results.
Corneal thickness measurements find applications in areas such as diagnosis and management of corneal disorders and corneal surgery. We present a technique for the measurement of corneal thickness using a CCD camera mounted on a slit-lamp biomicroscope and common image processing software. Thickness measurements were performed on three RGP contact lenses of known thickness with an average error of 5 microm, SD of 8 microm. Measurements of a living cornea yielded a thickness of 505 microm and a SD of 8 microm for 10 consecutive measurements; this is an acceptable value.
Franco
S
S
Departamento de Física-Universidade do Minho, Braga, Portugal. sfranco@fiscia.uminho.pt
Almeida
J B
JB
Parafita
M
M
D003315:Cornea / Q000033:anatomy & histology*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D006801:Humans; D015203:Reproducibility of Results; D014741:Video Recording