Complex sentence: Pseudomyopia refers to an intermittent and temporary shift in refraction of the eye towards myopia, in which the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.
Split into simpler sentences: Pseudomyopia refers to an intermittent and temporary shift in refraction of the eye towards myopia. It differs from true myopia in that the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.