Orthokeratology involves wearing a specially designed rigid contact lens overnight. There’s good evidence it can help slow the progression of myopia. But like all treatments, there are risks, too.
Macular degeneration can result in blurred or no vision in the center of the visual field.
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Age-related macular degeneration (AMD) lives up to its name: Its prevalence increases with age and it is the leading cause of blindness in people over 65 years old.
Some health products haven’t been tested for the benefits that they claim to produce. Blue-light blocking lenses are promoted as helping sleep cycles, but there is no evidence to support this.
Examination by ophthalmoscope in JF Phillips’ Ophthalmic Surgery and Treatment, 1869.
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