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  • Corneal dellen following strabismus surgery

Corneal dellen following strabismus surgery
Reviewed by Fiona Rowe

3 October 2022 | Fiona Rowe (Prof) | EYE - Paediatrics, EYE - Strabismus
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This study aimed to evaluate the frequency of corneal dellen (CD) development, the healing process and associated factors that affect the development and healing of CD formation after strabismus surgery. This study retrospectively reviewed 1264 eyes of 714 patients from 2005-2020 and included 349 females and 365 males aged 1-61 years. After exclusions the study included 47 eyes of 44 patients who developed CD formation after strabismus surgery. They were grouped according to surgical procedure. Group 1 included medial rectus recession, group 2 lateral rectus recession, group 3 medial rectus resection, group 4 lateral rectus resection, group 5 medial / lateral recti recession / resection, group 6 lateral / medial recti recession / resection, group 7 faden procedures and group 8 other surgery, e.g., advancement. CD development rate was 3.7% and improved in all eyes after topical hydration treatment, antibiotic eye drops and firm bandage. Further, 12.8% (n=6) developed scar formation in the peripheral cornea and, once healed, three had 20/20 visual acuity, one with 20/40, one with 20/50 and one with 20/63 visual acuity. All returned to preoperative visual acuity values. There was no significant difference for development or healing according to gender. There was a moderate positive correlation with age and della occurrence time. Occurrence in the temporal quadrant was significantly later than occurrence in the nasal quadrant. CD occurred earlier and healed quicker with younger age. There was no difference for operated muscle but CD occurred more in one muscle than two muscle surgery and more for resection procedures. This information is useful in targeting patients at potentially greater risk of CD development and ensuring closer follow-up and observation.

Corneal dellen development after strabismus surgery.
Sakallioğlu AK, Garip R.
STRABISMUS
2021;29(4):221-7.
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Fiona Rowe (Prof)
CONTRIBUTOR
Fiona Rowe (Prof)

Institute of Population Health, University of Liverpool, UK.

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