<prompt> A 14 years old boy complains of pain during reading. On examination, his both eyes are normal and vision with Snellens reading is 65. He still complains of pain on occluding one eye. The diagnosis isMyopiaPseudomyopiaHyperopiaEmmetropia  <response>: This boy has :-Eye strain during readingNo refractive error on examination snellen:s reading is 65That means patient has compensated for his refractive error by hyperaccommodation, i.e. spasm of accommodation or pseudomyopiaFollowing facts require some explanationActually this boy also has hypermetropia which is compensated by spasm of accommodation.If the child will be examined for refraction under cycloplegia relaxing the ciliary muscles this compensation will not be there and the refractory error can be measured.So, the boy is having hypermetropia but at the time of presentation, he is presenting with pseudomyopia due to excessive accommodation, i.e. compensatory correction of hypermetropia by excessive spasm of ciliary muscles.In hypemetropia when an error is not compensatedRefractive testing with or without cyclopegia will show hypermetropic type of refractive error.In Pseudomypia hypermetropia is compensated Refractive testing without cyclopegia No refractive error because of compensationRefractive testing with cycloplegia Hypermetropia is manifested.It is worth noting here that the above description was for spasm of accommodation which occurs in response to compensate the refractive error hypermetropia.In other situation where the spasm of accommodation is due to other causes e.g. drugs causing ciliary spasm, the eye will become myopic Pseudomyopia.So, basically, spasm of accommodation causes myopia which results in:-If hypermetropia is there It will be compensated.If no refractive error is there Eye will become myopic. 