Progression of Intermittent Exotropia (IXT) in a NZ population; a ten-year retrospective clinical audit
| Saturday, November 7, 2026 |
| 1:45 PM - 2:00 PM |
| Ballroom 1 and 2 |
Overview
Sally-anne Herring
Details
This subject was chosen as I’d wondered if our NZ population mix had a similar incidence and progression pattern in intermittent exotropia compared to the extensive population evidence we’ve seen from the evidence in the last 15 years inc. the various PEDIG studies of IXT. Ensure that there was no subconscious ethnical bias in Orthoptic practice or clinical treatment choice offered.
Method. A ten-year retrospective review from a single regional centre reviewed by a sole orthoptist. Sample size 178 possible cases 171 with complete data set, 7 cases omitted due to misfiling or duplicate ECA numbers.
Results. Regionally increased sample size of Maori in the regional area compared to National regional census data 53% European/other, 44% Maori and 3% Pacifica. Clinically no-ethnical bias in assessment and follow-up treatment onset or options used was found.
Conclusions: Appears increased incidence of this type of strabismus but less incidence of progression to surgery for Maori - whether due to less decompensation or more acceptance of condition with this ethnicity yet to be confirmed. Percentage findings will be discussed. Option also for follow-up audit of consumer feedback to satisfy this question could be considered.
Speaker
Mrs Sally-anne Herring
Health Nz/te Whatu Ora, Hawke's Bay
Progression of Intermittent Exotropia (IXT) in a NZ population; a ten year retrospective clinical audit.