Reliable detection of Win98 may not be possible.
Ophthalmologists are medical doctors who are trained to diagnose and treat all disorders of the eye.
But there are other types of eye care professionals. Optometrists are licensed professionals who examine eyes for vision problems and eye disorders and prescribes corrective lenses. Opticians make or sell eyeglasses and contact lenses according to an ophthalmologist's or optometrist's prescription. The most common refractive problem in children is nearsightedness. If your doctor or school nurse suspects that you are nearsighted, you will have your eyes tested.