Project design The Secretary shall design the demonstration project in a manner so as to provide a rich, well-structured, and defined data set from which inferences about the fiscal impact on the Federal Supplementary Medical Insurance Trust Fund under section 1841 of the Social Security Act ( 42 U.S.C. 1395t ) resulting from the permanent coverage under part B of title XVIII of the Social Security Act ( 42 U.S.C. 1395j et seq.) of low vision devices (including coverage for subcategories or subsets of such devices) can be made using appropriate statistical methods. To the maximum extent possible, such demonstration project shall evaluate the fiscal impact of permanent coverage under such part for the most function-rich, most powerful, and most expensive low vision devices. (4) Consultation In conducting the demonstration project the Secretary shall consult with organizations of consumers with vision loss and other stakeholder organizations. (c) Reports (1) Interim report Not later than 180 days after the last day of the third year of the demonstration project, the Secretary shall submit to the Committee on Finance of the Senate and to the Committees on Ways and Means and Energy and Commerce of the House of Representatives a report that describes the progress and preliminary findings from the demonstration project. (2) Final report Not later than 180 days after the last day of the demonstration project and after solicitation and consideration of formal written input on the project from organizations representing consumers with vision loss and other stakeholder organizations, the Secretary shall submit to such Committees a final report on the project. Such report shall include an evaluation of the fiscal impact on the Medicare program under part B of title XVIII of the Social Security Act ( 42 U.S.C. 1395 et seq.) of providing coverage of low vision devices (including coverage for subcategories or subsets of such devices) and such other findings and recommendations as the Secretary deems appropriate. (d) Funding