Changes in Intraocular Pressure After Intravitreal Injection
Monitoring Changes in Intraocular Pressure After Intravitreal Injection
Intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections introduce additional fluid volume into the eye, which can cause an acute, transient elevation in intraocular pressure (IOP). The purpose of this prospective observational study is to evaluate the immediate and early changes in intraocular pressure following intravitreal anti-VEGF injections and to determine how rapidly pressure recovers toward baseline levels.
Adult participants scheduled to receive routine intravitreal anti-VEGF therapy for established clinical indications, such as diabetic macular edema, neovascular age-related macular degeneration, or retinal vein occlusion, will be enrolled. Intraocular pressure will be measured using an Icare rebound tonometer with single-use disposable probes before injection (baseline) and at 1 minute, 5 minutes, and 20 minutes post-injection. The study will also analyze whether factors such as refractive error, the number of prior injections, or the type of anti-VEGF drug administered affect the severity of post-injection pressure spikes and subsequent recovery.
Studieoversigt
Status
Undersøgelsestype
Tilmelding (Anslået)
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Age 18 years or older.
- Scheduled to receive an intravitreal anti-vascular endothelial growth factor (anti-VEGF) injection for an established clinical indication (e.g., diabetic macular edema, neovascular age-related macular degeneration, or retinal vein occlusion).
- Provision of written informed consent prior to enrollment.
Exclusion Criteria:
- Known history of glaucoma or ocular hypertension.
- History of previous glaucoma surgery.
- Corneal diseases or ocular conditions that significantly interfere with accurate intraocular pressure measurement.
- Inability to cooperate adequately during intraocular pressure measurement.
- Refusal to participate or failure to provide informed consent.
- Development of marked intraocular pressure elevation immediately after injection (IOP ≥ 40 mmHg) requiring anterior chamber paracentesis.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Intravitreal Anti-VEGF Injection Cohort
Patients aged 18 years and older scheduled to receive an intravitreal anti-VEGF injection for established clinical indications, including diabetic macular edema, neovascular age-related macular degeneration, or retinal vein occlusion.
Participants undergo baseline ophthalmic evaluation followed by intraocular pressure (IOP) monitoring at 1 minute, 5 minutes, and 20 minutes post-injection using an Icare rebound tonometer.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Change from Baseline in Intraocular Pressure at 1 Minute
Tidsramme: Baseline and 1 minute post-injection
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Intraocular pressure will be measured in mmHg using an Icare rebound tonometer with a single-use disposable probe to assess the acute post-injection pressure spike compared to baseline.
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Baseline and 1 minute post-injection
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Change from Baseline in Intraocular Pressure at 5 Minutes
Tidsramme: Baseline and 5 minutes post-injection
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Intraocular pressure will be measured in mmHg using an Icare rebound tonometer with a single-use disposable probe to evaluate early post-injection pressure trends.
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Baseline and 5 minutes post-injection
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Change from Baseline in Intraocular Pressure at 20 Minutes
Tidsramme: Baseline and 20 minutes post-injection
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Intraocular pressure will be measured in mmHg using an Icare rebound tonometer to assess the rate and extent of pressure recovery toward pre-injection baseline levels.
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Baseline and 20 minutes post-injection
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Samarbejdspartnere og efterforskere
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Primær færdiggørelse (Anslået)
Studieafslutning (Anslået)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- Post-Intravitreal IOP Changes
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