This patient with OD+2.00= 20/20 and OS-3.00-2.00X180=20/20 will best achieve stereopsis with which of the following modalities?

The ability to achieve stereopsis, which is the perception of depth that relies on the brain’s ability to process visual information from both eyes, can be significantly influenced by how well each eye sees and how the optics of the chosen modality align with the patient's refractive error.

In the case presented, the patient has a substantial difference in refractive error between the two eyes, with one eye being hyperopic (+2.00) and the other being myopic with astigmatism (-3.00-2.00X180). Contact lenses provide an advantage in such scenarios because they sit directly on the eye, allowing for a more natural positioning of the optical system. This can enhance the alignment of the visual axes and help in overall visual performance, promoting better binocular vision and depth perception.

Additionally, contact lenses offer a more extensive field of view with less distortion compared to spectacles, especially when there is a significant difference in the prescriptions of each eye. Spectacles can cause image size differences and may introduce prismatic effects based on the thickness and positioning of the lenses, which can detract from stereopsis.

Intraocular lenses (IOLs) are typically used in cataract surgery or refractive surgery and are not relevant in achieving stereopsis for