Research in orthokeratology. Part IV: Results and observations.

Changes in unaided visual acuity, corneal integrity and lens position are differentially affected by contact lens fitting procedures. The effects on these parameters, from contact lenses fitted by defined conventional and orthokeratological techniques, are given and compared to each other and to a group of non-contact lens wearers. General trends and variability of data are discussed in conjunction with pertinent clinical observations for the three groups.