Yes / Aim: To assess the ability of critical flicker frequency (CFF) and optimal reading speed (ORS) to predict the
potential vision in patients with cataract with and without ocular comorbidity.
Methods: The two novel tests were compared with two well established potential vision tests (PVTs), the
potential acuity meter (PAM) and the laser interferometer (LI). Measurements were made preoperatively in 1
eye of 88 subjects using the battery of 4 PVTs. Postoperative measurements were made with the CFF and the
ORS. The subjects studied were consecutive cases over a 12-month period who fulfilled the inclusion and
exclusion criteria, and agreed to participate in this study.
Results: CFF was the PVT most resistant to the presence of cataract. Both CFF and ORS give a similar
predictive precision in the presence of cataract and ocular comorbidity, although CFF seems more precise
when the cataract is dense.
Conclusions: The PAM and the LI showed a limited clinical capability in predicting postoperative visual acuity,
particularly with dense opacities. The CFF shows the most promise as a PVT, particularly with dense cataract.
Further evaluation is required for both CFF and ORS. / Federation of Ophthalmic and Dispensing Opticians
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/4487 |
| Date | 11 1900 |
| Creators | Douthwaite, William A., Vianya-Estopa, Marta, Elliott, David B. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, Published version p |
| Rights | Copyright statement: © 2007 BMJ Publishing. Reproduced in accordance with the publisher's self-archiving policy. |
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