Certified Ophthalmic Medical Technologist (COMT) Practice Exam

What is the amount of latent hyperopia calculated from the following values: +3D absolute hyperopia, +2D manifest hyperopia, and +7D from cycloplegic refractometry?

1. +1D

2. +2D

3. +3D

4. +4D

The correct answer is: +2D

To determine the amount of latent hyperopia, we start by defining the different types of hyperopia involved in this calculation. Absolute hyperopia refers to the total amount of hyperopia present regardless of accommodation. Manifest hyperopia represents the portion of hyperopia that is revealed when the patient is fully relaxed but does not take into account the ability of the eye to accommodate. Latent hyperopia is the difference between absolute and manifest hyperopia. In this scenario, the values are: - Absolute hyperopia: +3D - Manifest hyperopia: +2D To find the latent hyperopia, you would subtract the manifest hyperopia from the absolute hyperopia: Latent hyperopia = Absolute hyperopia - Manifest hyperopia Latent hyperopia = +3D - +2D Latent hyperopia = +1D However, the additional reference to +7D from cycloplegic refractometry indicates another strategy to confirm our findings about hyperopia. When the eye is fully cyclopleged, all accommodation is paralyzed, allowing us to measure total hyperopia without the influence of the eye’s accommodating ability. In this case, if we consider that the cycloplegic refraction value (+7D) signifies total hyper