Lenticonus is a medical condition that affects the eye, causing a cone-shaped deformation on the front or back of the lens. Synonyms for lenticonus include lentiglobus and lentigonus, both of which signify a similar condition involving the lens. Other similar conditions include keratoconus and pellucid marginal degeneration, both of which cause irregular corneal shapes that can affect vision. These conditions can be diagnosed by an ophthalmologist and treated with corrective lenses or surgery. It is important for individuals experiencing vision problems to seek medical attention as soon as possible to prevent further damage and improve their quality of life.