Article 4
Airmen shall be classified in medical standards as class A and class B (hereinafter "Class A" and "Class B" respectively). Such respective classifications in medical standards apply to the following airmen:
1. Class A:
(1) Airline transport pilot.
(2) Commercial pilot engaged in Airline transport and General Aviation business charter operation.
(3) Multi-crew pilot.
2. Class B:
(1) Student pilot
(2) Private pilot
(3) Commercial pilot engaged in General Aviation other than business charter operation.
(4) Commercial pilot-free balloon
(5) Commercial pilot-glider
(6) Private pilot-airship
(7) Flight engineer
(8) Air traffic controller
(9) Flight instructor

Article 17
The medical standards for mental and neurologic systems are as follows:
1. Mental illnesses-none of the followings shall be found in the airman’s medical history or had by the airman the latter of which is confirmed by verification:
(1) schizophrenia spectrum and other psychotic disorders
(2) severe neurotic, stressor-related disorders and somatoform disorder
(3) personality disorders or disorganized behaviors so severe to the extent such disorders or behaviors repeat themselves overtly
(4) psychoactive substance-related disorders and addiction
(5) a behavioural or emotional disorder, with onset in childhood or adolescence
(6) mental illnesses severe enough to affect the airmen’s ability to safely perform duties
2. Diseases of neurologic system-none of the followings shall be found in the airman’s medical history or otherwise:
(1) epilepsy
(2) disturbance of consciousness without identified causes
(3) cerebral vascular diseases
(4) migraine and/or headaches, collectively cause the disturbance of neurologic functions
(5) any other progressive of non-progressive central, peripheral or automatic nervous system diseases severe enough to affect the airmen’s ability to safely perform duties
3. Head injuries-none of the followings shall be found in the airman’s medical history or otherwise:
(1) head trauma to the intra cranial and the brain tissues or cerebral meninges remain partially injured
(2) head trauma to dura mater
(3) after brain surgery, injury to skull bone
(4) any other trauma of head severe enough to affect the airmen’s ability to safely perform duties
4. No spinal injury severe enough to affect the airmen’s ability to safely perform duties shall be found.

Article 21
Visual acuity shall be as follows:
1. The distant visual acuity in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/20. However, in case of corrective visual acuity, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
2. The near vision in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/40. However, in case of corrective vision, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
3. For the airmen aged 50 or more, the intermediate visual acuity in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/40. However, in case of corrective visual acuity, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
4. The ocular movement shall normal. The vertical phoria shall not be over one (1) prism diopter in heterophoric case and shall not be over six (6) prism diopters in each esophoric and exophoric cases.
5. The night vision shall normally function.
6. The eyes shall have normal stereopsis function. The depth perception shall not be over than 50 second farc.
7. Applicants whose uncorrected distant visual acuity in either eye is worse than 20/200 shall be required to provide a full ophthalmic report every five years.
The airmen by ways of corrections other than those corrective methods mentioned above, to meet the standards of visual acuity set out in the paragraphs 1 through 2 of this Article 21, shall be verified by CAA.

Article 29
The medical standards for mental and neurologic systems are as follows:
1. Mental illnesses-none of the followings shall be found in the airman’s medical history or had by the airman the latter of which is confirmed by verification:
(1) schizophrenia spectrum and other psychotic disorders
(2) severe neurotic, stressor-related disorders and somatoform disorder
(3) personality disorders or disorganized behaviors so severe to the extent such disorders or behaviors repeat themselves overtly
(4) psychoactive substance-related disorders and addiction
(5) a behavioural or emotional disorder, with onset in childhood or adolescence
(6) mental illnesses severe enough to affect the airmen’s ability to safely perform duties
2. Diseases of neurologic system-none of the followings shall be found in the airman’s medical history or otherwise:
(1) epilepsy
(2) disturbance of consciousness without identified causes
(3) cerebral vascular diseases
(4) migraine and/or headaches, collectively cause the disturbance of neurologic functions
(5) any other progressive of non-progressive central, peripheral or automatic nervous system diseases severe enough to affect the airmen’s ability to safely perform duties
3. Head injuries-none of the followings shall be found in the airman’s medical history or otherwise:
(1) head trauma to the intra cranial and the brain tissues or cerebral meninges remain partially injured
(2) head trauma to dura mater
(3) after brain surgery, injury to skull bone
(4) any other trauma of head severe enough to affect the airmen’s ability to safely perform duties
4. No spinal injury severe enough to affect the airmen’s ability to safely perform duties shall be found.

Article 33
Visual acuity shall be as follows:
1. The distant visual acuity in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/20. However, in case of corrective visual acuity, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
2. The near vision in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/40. However, in case of corrective vision, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
3. For the airmen aged 50 or more, the intermediate visual acuity in each (either right or left) naked eye or the eyes corrected with spectacles or monofocal, non-tinted contact lenses shall be 20/40. However, in case of corrective visual acuity, the airmen shall wear those corrective lenses when they are performing the duties privileged by the certificates issued to such airmen.
4. The ocular movement shall normal. The vertical phoria shall not be over one (1) prism diopter in heterophoric case and shall not be over six (6) prism diopters in each esophoric and exophoric cases.
5. The night vision shall normally function.
6. The eyes shall have normal stereopsis function. The depth perception shall not be over than 50 second farc.
7. Applicants whose uncorrected distant visual acuity in either eye is worse than 20/200 shall be required to provide a full ophthalmic report every five years .
The airmen by ways of corrections other than those corrective methods mentioned above, to meet the standards of visual acuity set out in the paragraphs 1 through 2 of this Article 21, shall be verified by CAA.