OPHTHALMOLOGIC EVALUATION OF RADIATION-RELATED OPTIC NEUROPATHY FOLLOWING IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY (IMRT) FOR NASOPHARYNGEAL CARCİNOMA

Study Overview
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Brief Summary
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Primary treatment in nasopharynx cancers is radiotherapy (RT) or chemoradiotherapy (CRT) depending on the stage of the tumor. According to the guidelines, the dose of radiotherapy for primary tumors varies between 66-70 Gy. In consideration of modern radiotherapy techniques like IMRT with systemic chemotherapy for nasopharyngeal cancer, loco-regional control has been perfect. However, the rate of late complications from treatment, many of which are irreversible, is still high. Radiation-related optic neuropathy is the late complication that optic nerves might be affected during the radiotherapy due to the close location of the nasopharynx. Incidence of this is 8.7-9% in head and neck cancer and is observed between 2-9 years after RT. Painless, irreversible, and progressive vision loss usually occurs, and the pallor of optic disc margins, retinal vein dilatation, bleeding, and neovascularization are in the ophthalmic examination. The risk of optic neuropathy increases when the tumor is in close contact with optic nerves, radiation dose, concurrent chemotherapy used, history of diabetes or hypertension. The aim of our study is to prospectively evaluate optic neuropathy in nasopharynx cancer patients treated in our clinic.

Official Title
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OPHTHALMOLOGIC EVALUATION OF RADIATION-RELATED OPTIC NEUROPATHY FOLLOWING IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY (IMRT) FOR NASOPHARYNGEAL CARCİNOMA (ORONIN)

Conditions
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The Aim of Our Study is to Prospectively Evaluate the Optic Neuropathy in Nasopharynx Cancer Patients

Intervention / Treatment
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* Radiation: IMRT(IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY )


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient with nasopharyngeal carcinoma that histopathologically confirmed Age >18 Radiotherapy or chemoradiotherapy applied to the patient in our clinic No recurrence or metastasis during follow-up Optic evaluation Evaluation with MRI or CT during follow-up Exclusion Criteria: Cranial RT No histopathological verification Age< 18 There were locoregional recurrence or metastasis

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Interventional Model Description: Prospective study
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Radiation: IMRT(IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY )|Evaluation the optic neuropathy in nasopharynx cancer patients treated in our clinic.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| OPHTHALMOLOGIC EVALUATION OF RADIATION-RELATED OPTIC NEUROPATHY FOLLOWING IMAGE GUIDED INTENSITY-MODULATED RADIATION THERAPY (IMRT) FOR NASOPHARYNGEAL CARCİNOMA (ORONIN) RADIATION-RELATED OPTIC NEUROPATHY | RADIATION-RELATED OPTIC NEUROPATHY | 2-9 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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RADIATION-RELATED OPTIC NEUROPATHY,NASOPHARYNGEAL CARCİNOMA, RADIOTHERAPY