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The final price depends on the protocol used and the clinical facility level. In the US, this diagnostic costs about _price_compare_US_average_ on average. Spain offers savings of approximately _price_percent_discount_%. Patients choose major hubs like Barcelona, Madrid, and Pamplona for these specialized eye tests.</p>\n\n<ul>\n<li>Multifocal protocol: Often costs 30-50% more than a standard full-field eye exam. This method maps the electrical response of specific retinal areas.</li>\n<li>City variations: Prices in Madrid and Barcelona are usually consistent. Expect to pay slightly more for testing at private university hospitals.</li>\n<li>Sedation: Adding sedation for pediatric patients adds to the total cost. Specialized children's centers often include child-friendly prep in their service.</li>\n<li>Physician fees: Expert interpretation by an ophthalmologist is usually part of the price. 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