NRCME 2019 DOT- Comprehensive Review for Exam complete solution

Corrective lenses that are prohibited by the FMCSA, including: - lenses that correct distance vision in one eye and near vision in the other. Telescopic lenses Medical guidelines for the driver with diabetes mellitus include: - Annual medical examination. Annual ophthalmologist or optometrist eye evaluation. Disqualification for a diagnosis of unstable proliferative retinopathy. Monocular Vision - Monocular vision is disqualifying. However, the driver who has monocular vision that with the better eye meets all vision qualification requirements may be considered for a Federal Vision Exemption if the Medical Examiner finds the driver otherwise medically fit for duty. Monocular vision is defined as vision that is at least 20/40 for distance in one eye with or without correction and vision that is less than 20/40 for distance in one eye with or without correction. The driver must meet other vision requirements in each eye, including visual fields (horizontal field of vision). Federal Vision Exemption: the driver with monocular vision who is applying for or has a federal exemption or is qualified by operation of 49 CFR 391.64 must have an annual physical examination. Drivers with vision loss who meet standards may be certified for up to two years. A driver who wears contact lenses which correct farsightedness in one eye and nearsightedness in the other, but has no other visual impairments can be certified under what additional conditions? Only if the driver wears prescription glasses which provide the same correction as the contact lenses. FMCSA guidance indicates that a driver should not be certified under these circumstances. Only by federal exemption. The driver is always certifiable under these conditions. - FMCSA guidance indicates that a driver should not be certified under these circumstances. Explanation: FMCSA guidance indicates that contact lenses that correct one eye for distance and one eye for near vision are not acceptable. Guidance recommends not to certify with ear problem diagnoses of: - a) Uncontrolled vertigo. b) Ménière's disease. c) Nonfunctioning labyrinth. d) Nonfunctioning fistula. The medical examiner's role in the exemption process includes _________. Issuing the exemption. Issuing the prescription for the driver's contact lenses and/or glasses. Providing the driver with contact information for the Federal Vision Exemption Program. Assuring that the driver has peripheral vision of at least 110 degrees in each eye. - Providing the driver with contact information for the Federal Vision Exemption Program. Explanation: The medical examiner's role in the exemption process is limited to performing the driver examination and providing the driver with contact information for the FMCSA related to the exemption process. An audiometric test produces the following results: Left ear: 500 Hz, 35dB Loss; 1,000 Hz, 35 dB loss; 2,000 Hz 45 dB loss. Right ear: 500 Hz, 40 dB loss; 1,000 Hz, 45 dB loss; 2,000 40 dB loss. What is the certification? Certify for one year. Certify for two years. Do not certify. Certify only when accompanied by hearing aid. - Certify for two years. Explanation: Drivers with an average hearing loss of < 40 decibels averaged across 500, 1000, and 2000 Hz in the better ear may be certified for two years.