Incidence and progression of ptosis after glaucoma surgery during one year of follow-up.

Cohort studyGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie· Jun 2026

Incidence and progression of ptosis after glaucoma surgery during one year of follow-up.

Nanami Okuzumi, Sotaro Mori, Kana Katakami … Makoto Nakamura

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GlaucomaCohort studyClinical practiceQ1IF 3.1

Ptosis developed in about one-third of eyes after glaucoma surgery

Incidence and progression of ptosis after glaucoma surgery during one year of follow-up.

Nanami Okuzumi … Makoto Nakamura

Graefe's archive for clinical and experimental ophthalmology · Jun 2026 · Q1 in Ophthalmology

Purpose

This study evaluated the incidence and progression of ptosis during the first year after glaucoma surgery.

Methods

Included microhook ab interno trabeculotomy (µTLO), Preserflo MicroShunt (Preserflo MicroShunt), trabeculectomy, and Ahmed glaucoma valve (ahmed glaucoma valve).

n = 167 patients

Results

32.3%

eyelids drooped after surgery, worse in about a third of eyes

n = 167 patients

More results

Mean (SD) MRD-1 decreased from 2.5 (1.2) mm preoperatively to 2.1 (1.3) mm at one year.

MRD-1 decreased significantly from 1 month through 1 year, whereas MRD-2 showed only a transient decrease at 1 month.

More results

No significant MRD-1 reduction occurred after µTLO, whereas significant decreases were observed after filtration surgery.

Ahmed glaucoma valve implantation and higher preoperative MRD-1 were associated with ptosis.

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Conclusion

Ptosis occurred in about one-third of eyes after glaucoma surgery and progressed up to one year. Filtration surgery was associated with a higher risk of postoperative ptosis.

Incidence and progression of ptosis after glaucoma surgery during one year of follow-up.

Incidence and progression of ptosis after glaucoma surgery during one year of follow-up.

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