RRB ALP Medical Standards 2026: Eye Vision, Lasik & A-1 Criteria

Updated on 28.05.2026

RRB ALP Medical Standards 2026 are among the strictest eligibility requirements in Indian government recruitment. The Assistant Loco Pilot (ALP) role stands out as one of the most safety-sensitive positions within the Indian Railways.

Because an ALP operates locomotives carrying thousands of passengers and heavy freight, the Railway Administration requires these candidates to meet the exceptionally strict A-1 medical standards.

You must understand that medical fitness operates as a strict qualifying barrier.

Even if you score top marks in the Computer Based Tests (CBTs) and the Computer Based Aptitude Test (CBAT), failing the final medical examination means you will not secure the appointment.

This article breaks down the exact medical criteria, vision requirements, and self-declaration processes you need to prepare for.

Candidates should also check the complete RRB ALP recruitment details through the RRB ALP Notification 2026 page and explore the latest updates from our Railway Jobs section for upcoming railway vacancies, exam dates, and eligibility updates.

Key Highlights of RRB ALP Medical Standards 2026

Before diving into the specifics, here is a clear overview of the fundamental medical requirements for the upcoming ALP recruitment:

Particulars	Details
Post Name	Assistant Loco Pilot (ALP)
Medical Standard	A-1 (Highest Railway Medical Category)
Glasses Allowed	No (Not permitted for Distant or Near Vision)
Lasik Allowed	Strictly Not Allowed
Color Vision Required	Yes (Mandatory to pass Color Vision test)
Night Vision Test	Yes (Mandatory to pass Night Vision test)
Final Medical Exam	Conducted exclusively by Railway Medical Authorities

What Is A-1 Medical Standard in RRB ALP?

The Indian Railways categorizes medical fitness into different tiers based on the nature of the job. The A-1 standard represents the highest and most rigorous medical category in railway recruitment.

The Railway Administration applies this standard specifically to staff directly responsible for train operations and safety.

Operating a locomotive requires immense mental alertness, physical endurance, and absolute visual precision under varying weather and lighting conditions.

The A-1 standard ensures that the candidate possesses flawless eyesight, robust physical health, and no underlying chronic systemic illnesses that could sudden incapacitate them while on duty.

RRB ALP Eye Vision Requirements 2026

Visual acuity forms the core of the A-1 medical standard. The Railway Medical Authorities evaluate your eyes through a series of specific, non-negotiable tests.

You must meet the criteria outlined below:

Vision Test	Requirement
Distant Vision	6/6, 6/6 without glasses. Must pass the fogging test (must not accept +2D).
Near Vision	Sn: 0.6, 0.6 without glasses.
Color Vision	Must pass standard color vision tests.
Binocular Vision	Must pass standard binocular vision tests.
Night Vision	Must pass standard night vision tests.
Mesopic Vision	Must pass standard mesopic vision tests.
Field of Vision	Must pass standard field of vision tests.

Is Lasik Allowed in RRB ALP?

The Railway Administration strictly prohibits Lasik surgery or any other surgical procedure designed to correct refractive errors for the ALP post.

You cannot undergo surgery to achieve the required 6/6 vision and expect to clear the medical examination.

The RRB medical board utilizes sophisticated ophthalmic equipment capable of detecting any history of corneal surgery.

The online application system now includes a built-in self-screening validation step where you must declare your conformity to this rule.

If the medical board discovers that you underwent corrective eye surgery and suppressed this information, they will immediately cancel your candidature, and you will face lifetime debarment from future railway examinations.

Is Color Blindness Allowed in RRB ALP?

Color vision is an absolute necessity for an Assistant Loco Pilot. A loco pilot relies entirely on colored signals (Red, Yellow, Green) along the railway tracks to control the speed and movement of the train.

Therefore, passing the color vision test is mandatory. If you have color blindness, the authorities will disqualify you from the ALP recruitment process immediately.

RRB ALP Medical Examination Process

The formal medical examination occurs at the very end of the recruitment cycle. Once you qualify the CBTs and the CBAT, the RRB will shortlist you for Document Verification (DV).

Immediately following a successful DV, the RRB will direct you to a designated Railway Hospital.

Here, Railway Medical Authorities will conduct a comprehensive examination adhering strictly to the guidelines of Chapter 5 of the Indian Railway Medical Manual (IRMM) Vol. I.

You must carry all required documents, including your medical declarations. You must pass this final medical fitness test to receive an offer of appointment from the concerned Zonal Railway.

Self Medical Declaration for CBAT

The RRB has introduced a unique self-screening process to prevent medically unfit candidates from proceeding too far into the recruitment stages. When you apply online, you must declare your physical and mental fitness.

If the RRB shortlists you for the Computer Based Aptitude Test (CBAT), you must bring a formal, physical medical report to the examination center.

The online system generates a downloadable medical report based on your application responses. You must take this document to a hospital or clinic and get it signed and sealed by registered medical professionals.

You need two specific sections completed:

Annexure VIII A: Must be signed by a General Physician certifying your general physical and mental fitness (e.g., no diabetes, no hypertension, no neurological disorders).
Annexure VIII B: Must be signed by an Eye Specialist certifying that you meet the A-1 vision standards (6/6 vision, no Lasik, normal color vision).

You cannot sit for the CBAT if you fail to produce these original, signed documents on the day of the test.

Common Reasons for Medical Rejection in RRB ALP

Many candidates clear the written exams only to face disappointment at the medical stage. The authorities commonly reject candidates for the following reasons:

Failing to meet the 6/6 distant vision standard without glasses.
Failing the color blindness test.
Having a history of Lasik or any other refractive corrective surgery.
Providing an incorrect or falsified medical declaration during the application or CBAT stage.
Failing secondary vision tests, such as the night vision, binocular vision, or mesopic vision tests.
Diagnoses of chronic illnesses that affect alertness, such as severe diabetes, hypertension, or seizure disorders.

Important Medical Instructions for Candidates

Do not hide eye surgery history: Honesty is your only option. The medical board will detect surgical interventions, and hiding them invites permanent debarment and legal action.
Medical standards are strict: The A-1 criteria leave no room for negotiation or border-line passes. You either meet the standard perfectly or you do not.
Medical fitness is mandatory even after written exam selection: High scores in CBT-1, CBT-2, and CBAT mean nothing if you fail the medical examination. The medical test is the ultimate deciding factor.
No alternative post if medically unfit for ALP: The CEN explicitly states that if the medical board finds you unsuitable for the A-1 standard, the Railways will not offer you any alternative administrative or technical appointment. Your recruitment journey ends there.

Difference Between A-1 and Other Railway Medical Standards

The Railways use different medical standards depending on how directly a job impacts train safety. Here is a brief comparison to show why A-1 stands apart:

Medical Standard	Basic Requirement	Glasses Permitted?
A-1	6/6, 6/6 Distant Vision. Strict Color/Night vision.	No glasses allowed at all.
A-2	6/9, 6/9 Distant Vision. Strict Color/Night vision.	Glasses allowed (Power not exceeding 2D).
B-1	6/9, 6/12 Distant Vision. Color vision required.	Glasses allowed (Power not exceeding 4D).
B-2	6/9, 6/12 Distant Vision.	Glasses allowed (Power not exceeding 4D).

Note: The Assistant Loco Pilot post strictly requires the A-1 standard. The other standards apply to different railway positions not covered in this specific recruitment.

Important RRB ALP Links:

FAQ on RRB ALP Medical Standards 2026

1. Is Lasik allowed in RRB ALP?

No. The Railway Administration strictly prohibits Lasik or any other refractive corrective surgery for the ALP post.

2. Are spectacles allowed in RRB ALP?

No. Candidates must possess 6/6 distant vision and Sn 0.6 near vision entirely without the aid of glasses or contact lenses.

3. What is A-1 medical standard?

A-1 is the highest and most rigorous medical category in the Railways, demanding perfect unaided eyesight and robust physical health to ensure safe train operations.

4. Is color blindness allowed in ALP?

No. Passing the color vision test is strictly mandatory. Candidates with color blindness are not eligible to become Loco Pilots.

5. What is the eyesight requirement for ALP?

Candidates must have 6/6, 6/6 distant vision without glasses, pass the fogging test (must not accept +2D), and possess normal color, night, and binocular vision.

6. What happens if I fail the medical test?

If you fail the A-1 medical test, the authorities will disqualify you from the ALP recruitment immediately. The Railways will not provide any alternative appointment.

7. Is the medical test conducted after CBT?

Yes. Railway Medical Authorities conduct the comprehensive medical examination only after you successfully clear CBT 1, CBT 2, the CBAT, and Document Verification.

8. What is a mesopic vision test?

A mesopic vision test evaluates how well your eyes function in low-light conditions, such as driving at dawn, dusk, or under dim lighting, which is crucial for train safety.