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Evaluation of central corneal thickness with low-coherence reflectometry, ultrasound and specular microscopy

Poster Details

First Author: R.Almeida PORTUGAL

Co Author(s):    J. Guilherme-Monteiro   L. Dias   S. Gouveia   H. Ferreira   M. Ruão   J. Salgado-Borges

Abstract Details



Purpose:

To assess the agreement between low-coherence reflectometry, specular microscopy and ultrasound measurements of central corneal thickness.

Setting:

Ophthalmology Department of the Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal.

Methods:

Fifty eyes of 28 patients programmed for cataract surgery were evaluated with the contact ultrasound pachymeter OcuScan RxP®, specular microscope Tomey EM-3000® and optical biometer Lenstar LS 900®. Contact lens users and patients with corneal pathology were excluded.

Results:

Mean age were 71,6 ±7,94 years, ranging from 52 to 86 years. Pachymetry values of 540.5 ±31.19 ?m, 531.9 ±31.49 ?m e 541.1 ±32.63 ?m were obtained with the ultrasound, specular microscope and low-coherence reflectometry, respectively. Values were correlated (r >0.88) although those obtained with specular microscopy presented significant differences from those acquired with the other methods.

Conclusions:

Present results show that central corneal thickness measurements obtained with ultrasound pachymetry, specular microscopy and low-coherence reflectometry are highly correlated but only one of the equipments can give other information of interest for implant and refractive surgery.

Financial Disclosure:

NONE

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