Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.
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Question: Abstract: In an earlier report, the authors demonstrated a trend toward progressive hyperopia in radial keratotomy (RK) patients examined between one and three to four years postoperatively. In those 109 cases, the surgeries were performed using a metal-blade instrument. In the following study, the metal-blade series was updated to a total of 225 procedures, and a more recent series of 300 procedures performed on 228 patients was examined in which a diamond-knife cutting instrument was used. Patients had uncorrected visual acuity determination, cycloplegic refractions with best corrected visual acuity measurements and keratometry measurements. The authors demonstrated a hyperopic shift in the distribution of postoperative spherical equivalent (SE) values across time such that higher proportions of cases in both metal-blade and diamond-knife series were at least 1.0 diopter (D) away from emmetropia at 24 and 48 months than was the case at 12 months after surgery. Regression analysis determined that none of the preoperative or surgical variables known to affect refractive outcome of RK (alone or in combination) could account for the changes in refraction seen during the course of postoperative time. In general, changes in keratometry paralleled refractive changes, but were somewhat smaller in magnitude.

Answer: Progressive hyperopia in radial keratotomy. Long-term follow-up of diamond-knife and metal-blade series.

Question: Abstract: The classical concept of the autonomic innervation of the nasal mucosa states that the postganglionic sympathetic neurones lie in the superior cervical ganglion and those of the postganglionic parasympathetic neurones are in the pterygopalatine ganglion. We have carried out a study of the fine structure of the respiratory nasal mucosa in man and in the cat using the techniques described by Jabonero, Champy Maillet and Koelle-Friedenwald. The most striking finding was the presence of microganglia deep within the mucosa of the inferior turbinate close to the glands. These microganglia were cholinergic in nature since they demonstrated a positive reaction to anticholinesterase. From this we deduce that the nasal parasympathetic pathway has its postganglionic neurones not only in the pterygopalatine ganglion but also in these microganglia of the inferior turbinate. Each of four groups of cats were submitted to different techniques, including administration of neostigmine, inferior turbinectomy and Vidian neurectomy. Resection of the microganglia by means of turbinectomy reduced the hypersecretion caused by neostigmine and this was most noticeable when a Vidian neurectomy was carried out in addition.

Answer: Autonomic microganglia of the nasal mucosa and their relation to vasomotor rhinitis.

Question: Abstract: Repetitive chest pain of obscure origin is commonly encountered in older children and adolescents. A questionnaire study was conducted to determine the long-term outcome in 31 patients diagnosed as having idiopathic recurrent chest pain after an average 4.1-year follow-up period. Although 45 percent reported having had persistent symptoms, chest pain had disappeared in 81 percent of those followed more than 3 years. Equally reassuring is the fact that in no case did occult disease subsequently appear to account for the initial symptoms. This study supports the current clinical approach of limited diagnostic evaluation and reassurance in the management of these patients.

Answer:
The natural history of idiopathic chest pain in children. A follow-up study.