Treatment of unilateral visual impairment on preschool vision screening: Author's replyBMJ 2004; 328 doi: https://doi.org/10.1136/bmj.328.7435.348-c (Published 05 February 2004) Cite this as: BMJ 2004;328:348
- Michael Clarke, university reader in ophthalmology (M.P.Clarke@ncl.ac.uk)
- Claremont Wing, Royal Victoria Infirmary, Newcastle upon Tyne NE1 4LP
EDITOR—O'Brien seems to attach greater weight to a study of apparently declining acuity in a non-compliant group than to our observation in a randomised controlled study of no deterioration in our control group, who showed the same eventual result from deferred treatment. This simply illustrates again the pitfalls inherent in natural history studies, which are plagued by unmeasurable …
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial