Long-Term Recurrence of Hypertropia After Surgery in Sagging Eye Syndrome: Insights and Implications

Highlight

• Strabismus surgery significantly reduces hypertropia in patients with sagging eye syndrome (SES) immediately postoperatively.
• Approximately one-quarter of patients develop symptomatic recurrent hypertropia within about two years after surgery.
• Neither patient’s demographic factors nor magnitude of preoperative hypertropia predict recurrence or overcorrection risk.
• Surgical overcorrection events are uncommon and may be misclassified due to compensatory changes in the fellow eye over time.

Study Background: Clinical Context and Disease Burden