The Medicare Optometry Parity Amendment: predicted and actual payments to optometrists and ophthalmologists.

This paper compares various costs estimates for the expansion of optometric services under the Medicare program that were developed prior to the enactment the Medicare Parity Amendment of 1986. The new law, effective April 1, 1987 redefines the conditions of optometric participation and expanded coverage to include all Medicare covered services for which optometrists are authorized to perform under the state law. The paper describes the impact of the Medicare amendment with regard to payments to optometrists and ophthalmologists. Payments to optometrists increased from $12 million in 1986, a year before the Medicare Amendment to $81 million in 1988, the first full year after the law's implementation increasing their market share of Medicare payments from 2.6% to 11.1%. Ophthalmology incurred a significant decrease in market share from 97.9% to 88.9% during this period.