Purpose We assessed whether patients referred with a diagnosis of cata
ract require outpatient assessment before listing for surgery or wheth
er the general practitioner could have direct access to the waiting li
st. We also studied whether pre-assessment clinics made a significant
difference to management even when waiting times were long. Methods Da
ta about patients referred with a diagnosis of cataract to the Oxford
Eye Hospital and associated hospitals were collected. Seventy-five pat
ients were prospectively studied and 100 patient records were retrospe
ctively analysed. Results Twenty-six per cent of patients had a misdia
gnosis or additional problems affecting management. Optometrists provi
ded more information than general practitioners, but their diagnostic
accuracy was equal (73% optometrists, 75% general practitioners). At t
he pre-assessment clinic pupil dilatation changed management in only 4
% of patients. Conclusion Listing patients on the basis of referral le
tters would be inappropriate in 1 in 4 patients. Pre-assessment clinic
s rarely picked up a clinically relevant change. Thus if outpatient co
nsultation included a decision on the exact surgical plan including im
plant power, then pre-assessment clinics may not be necessary.