Ultrasound biometry in the diagnosis of amblyopia in keratoconus

Assiri, Abdullah M.; Yousuf, Bakri I.; Woodhouse, J. Margaret; Quantock, Andrew J.; Murphy, Paul J.

doi:10.1016/j.clae.2005.12.005

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Volume 29, Issue 2 , Pages 75-79, May 2006

Ultrasound biometry in the diagnosis of amblyopia in keratoconus

Abdullah M. Assiri
- Optometry Department, Asir Central Hospital, KSA, Cardiff University, Wales, UK
- School of Optometry and Vision Sciences, Cardiff University, Wales, UK
- Corresponding author at: Cardiff University, School of Optometry and Vision Sciences, Redwood Building, King Edward VII Avenue, Cathays Park, Cardiff CF10 3NB, Wales, UK. Tel.: +44 2920876166/7766217051; fax: +44 2920874859.
Bakri I. Yousuf
- Optometry Department, Asir Central Hospital, KSA, Cardiff University, Wales, UK
J. Margaret Woodhouse
- School of Optometry and Vision Sciences, Cardiff University, Wales, UK
Andrew J. Quantock
- School of Optometry and Vision Sciences, Cardiff University, Wales, UK
Paul J. Murphy
- School of Optometry and Vision Sciences, Cardiff University, Wales, UK

published online 21 March 2006.

Abstract

Here, we describe a case in which A-scan ultrasound biometry was used to differentially diagnose the cause of reduced vision in a patient with keratoconus. A patient with keratoconus presented with reduced visual acuity in one eye, not improvable above 6/18 with specialist keratoconus contact lens fitting. This monocular amblyopia was attributed to previous anisometropic ametropia by the use of ultrasound biometry. The report demonstrates the usefulness of ultrasound biometry in the detection of amblyopia in circumstances in which a previous assessment of amblyopia is not possible. This information will impact upon decisions made for the future clinical management in this case, especially if vision deteriorates so that a corneal graft is required.

Keywords: Keratoconus, Ultrasound biometry, Amblyopia, Axial length, Anterior chamber