The question pertains to the categorization of an injury under Schedule I of the Employees' Compensation Act, 1923. Specifically, it addresses the scenario where an individual has lost one eye without any complications, while the other eye remains normal.

Let's break down the options provided:

1. Permanent total disablement: This refers to a total incapacity to work in any employment or occupation. Loss of one eye does not result in total disablement, as the individual can still work in various capacities.
2. Permanent partial disablement: This involves a permanent reduction in the physical capacity of an individual to work. According to Schedule I of the Employees' Compensation Act, the loss of one eye is classified as a permanent partial disablement, provided the other eye is normal.
3. Temporary partial disablement: This refers to a temporary loss of ability to work in full capacity, which improves over time. The injury in question (loss of one eye) is permanent and does not improve with time, thus ruling out this option.
4. Will be decided based on medical examination: Although medical examinations can provide additional insights, the loss of one eye without complications is clearly defined under the Act, making further examinations primarily procedural rather than determining the category.

Given the details and definitions under the Employees' Compensation Act, 1923, the correct categorization for the injury is "permanent partial disablement". This classification allows for compensation and support according to the specific reduction in work capability.