Lasik surgery is primarily used to correct which type of vision issues?

Lasik surgery is primarily used to correct refractive errors in the eye, such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. This surgical procedure reshapes the cornea using a laser, allowing light to focus correctly on the retina, which improves visual acuity.

Refractive errors occur when the shape of the eye prevents light from focusing directly on the retina. By addressing these specific issues, Lasik can significantly enhance a patient's ability to see clearly without the need for glasses or contact lenses.

The other options pertain to different eye conditions that do not fall under the scope of Lasik surgery. Color vision deficiency relates to the inability to distinguish certain colors and is not correctable through structural changes made by Lasik. Retinal detachment involves issues with the retina itself and typically requires different forms of treatment to reattach the retina rather than a corneal reshape like in Lasik. Corneal abrasions are scratches on the cornea, which need to heal on their own or may require treatment but do not involve reshaping the cornea in the same manner as Lasik surgery.