An ophthalmologist specializes in detecting and treating eye diseases such as myopia (nearsightedness), hyperopia (farsightedness), astigmatism, cataract, glaucoma, retinal detachment, macular degeneration, and strabismus (crossed eyes). They are qualified to prescribe optical corrections, including glasses and contact lenses, to improve vision. Additionally, the ophthalmologist conducts precise visual assessments crucial for professions requiring optimal visual acuity, such as drivers, taxi operators, and pilots.