Pilot study of a new less invasive technique of local anaesthesia for the eye in cataract surgery

Pilot study of Anterior Sub-Tenon Anaesthesia in cataract surgery, to assess quality of anaesthesia and akinesia.

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12610000453088

Acronym

PASTA

Enrollment

Registered

2010-06-03

Start date

2008-11-01

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Ophthalmic regional blocks are some of the most commonly used in Australia. yet most of them require blind insertions to the posterior of the eye. This study aims to study a new technique which injects under vision to the anterior of the eye. In theory this should be a simpler and safer technique. it's efficacy and safety will be the subject of this study.

Interventions

A sub-Tenon regional block which is injected anterior to the equator of the globe without dissection, rather than the tradition injections posterior to the equator or after dissection. There are two comparison groups of either 2% Lignocaine or half/half solution of 0.5% Bupivacaine and 2% lignocaine. Total volume injected from 6-10mls. The injection it self takes 2-3 minutes, but including preparation and observation will take about 20 minutes.

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Treatment

Masking

Blinded (masking used)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

Elective patients requiring phaco cataract surgery

Exclusion criteria

Lack of patient consent, previous surgery to the posterior of the eye.

Outcome results