Single Eye Blindness: Does It Prevent You from Becoming an Astronaut?

Being blind in a single eye does not automatically disqualify you from becoming an astronaut. The decision largely depends on the specific NASA and other space agencies' medical and vision requirements. Each astronaut candidate is evaluated on a case-by-case basis, and having a condition such as single eye blindness may require additional assessments or considerations regarding their ability to perform the duties of an astronaut.

What NASA Requires for Astronaut Candidates

NASA requires that candidates have vision that is correctable to 20/20 in both eyes. This means that even if one eye meets this standard, the overall assessment would depend on the individual's specific circumstances. Factors such as the cause of the blindness, overall health, and ability to perform tasks required in space are all considered. A candidate with single eye blindness may still be considered, but additional assessments would be necessary.

The evaluation process is thorough and involves multiple aspects of health and capability. Vision is just one element of the requirements, which also include physical fitness, problem-solving skills, and a diverse set of skills that are crucial for space exploration.

How the Selection Committee Sees It

A helpful analogy to consider is the idea that a twin or clone with perfect vision would more likely be chosen over someone with single eye blindness, if all other qualifications are equal. However, astronauts need more than just physical attributes; they also require excellent problem-solving skills and the ability to maintain overall health in various conditions. Consequently, overcoming the challenge of single eye blindness would be one of many hurdles to jump over.

Understanding the Visual Requirements

The visual requirement for NASA is "Distance visual acuity: 20/200 or better uncorrected, correctable to 20/20 each eye." Even if one eye does not meet this requirement, it is still possible to be considered. However, the entire application process is highly competitive and rigorous. Interested individuals must first be selected as Astronaut Candidates and then compete for a slot. It's a demanding and challenging process, but it's also highly rewarding.

To gain more information about the astronaut requirements and the process, you can visit the following official websites:

It is important to understand that becoming an astronaut is no easy feat. However, the environment today does not require everyone to be a pilot. Additional skills, physical fitness, and strong problem-solving abilities are all crucial. Overcoming the visual requirement of single eye blindness is certainly possible, but it requires dedication and a focus on building other competencies.

As you embark on your journey towards becoming an astronaut, it's essential to stay informed, prepared, and persistent. The journey to becoming an astronaut starts with setting your goals high and striving tirelessly to achieve them.

Best of luck to you!