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Published on: January 26, 2018
Glaucoma secondary to intraocular tumors: mechanisms and management
David A Camp1, Prashant Yadav1, Lauren A Dalvin1,2
1Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania.
Purpose Of Review:
Glaucoma secondary to intraocular tumors is important to consider in eyes with a known tumor and those with unilateral or refractory glaucoma. The purpose of this review is to discuss the mechanisms and management of intraocular tumors with related secondary glaucoma.
Recent Findings:
Several intraocular tumors can lead to glaucoma, including iris melanoma, iris metastasis, iris lymphoma, trabecular meshwork melanoma, choroidal melanoma, choroidal metastasis, retinoblastoma, and medulloepithelioma. The mechanisms for glaucoma include solid tumor invasion into the angle, tumor seeding into the angle, angle closure, and iris neovascularization. Management of the tumor can lead to resolution of glaucoma. Management of the secondary glaucoma may involve medical therapy, transscleral cyclophotocoagulation, laser trabeculoplasty, and potentially antivascular endothelial growth factor therapy. Minimally invasive glaucoma surgery (MIGS) can be considered for eyes with treated, regressed posterior segment malignancies if there is no iris or ciliary body involvement. Importantly, avoidance of MIGS, filtering, or shunting surgery in eyes with active malignancies is emphasized.
Summary:
Intraocular tumors can produce secondary glaucoma. Treatment of the primary tumor can sometimes resolve the glaucoma. Topical, oral, or laser therapies can be considered. Avoidance of MIGS, filtering, or shunting surgery is advised until the malignancy is completely regressed.
Insights
Intraocular tumors can cause secondary glaucoma through various mechanisms. Treating the primary tumor is key, with medical, laser, or surgical interventions for glaucoma, avoiding certain surgeries in active malignancy.
Area of Science:
- Ophthalmology
- Oncology
Background:
- Secondary glaucoma is a significant complication of intraocular tumors.
- Early consideration is crucial for patients with known tumors or unexplained unilateral/refractory glaucoma.
Purpose of the Study:
- To review the mechanisms by which intraocular tumors cause secondary glaucoma.
- To discuss current management strategies for these cases.
Main Methods:
- Literature review of intraocular tumors associated with secondary glaucoma.
- Analysis of tumor-related glaucoma mechanisms and treatment outcomes.
Main Results:
- Common culprits include iris melanoma, choroidal melanoma, retinoblastoma, and others.
- Glaucoma mechanisms involve tumor invasion, angle closure, and neovascularization.
- Tumor treatment can resolve glaucoma; management includes medical, laser, and specific surgical approaches.
Conclusions:
- Intraocular tumors frequently lead to secondary glaucoma.
- Treatment of the primary malignancy is paramount for glaucoma resolution.
- Careful selection of glaucoma treatment is necessary, avoiding certain procedures in active tumors.
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