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1: J Cataract Refract Surg. 2002 Sep;28(9):1707-8.Click here to read Links

Erroneous automated refraction in a case of asteroid hyalosis.

Wong SC, Sampath R.

Eye Department, Leicester Royal Infirmary, Leicester, United Kingdom.

To our knowledge, this is the first report of asteroid hyalosis giving rise to spurious automated refraction readings. A patient with asteroid hyalosis had uneventful phacoemulsification with intraocular lens implantation. Using a Nikon autorefractor, the postoperative refraction was +13.0 diopters (D); retinoscopy revealed that it should be +1.0 D. Asteroid hyalosis changes the optical quality of the vitreous and can cause an incorrect reading from automated equipment such as autorefractors and A-scan ultrasound scanners. In patients with asteroid hyalosis, results from autorefractors should be viewed in conjunction with clinical findings.

PMID: 12231337 [PubMed - indexed for MEDLINE]