On 25th January, Dr Maseras, ophthalmologist from ICR Department of Retina and Vitreous, presented his doctoral thesis defense at Universitat Autònoma de Barcelona, a macular study under the name Study of retinal thickness in macula using optical coherence tomography after refractive surgery with ICL™ type phakic lenses, codirected by ICR Medical Director Dr Ignasi Jürgens.
Aim of the macular study
Dr Maseras doctoral thesis had the aim of determining changes in macular thickness after the implantation of an anterior segment phakic intraocular lens for ametropic correction by means of optical coherence tomography (OCT).
In order to achieve the aim of his thesis, Dr Maseras carried out a prospective study in 111 eyes from 58 patients that had undergone surgery with an ICL implantation. For that purpose, patients underwent a previous and subsequent evaluation to surgery, in weeks 4 and 12. Visual acuity, intraocular pressure, anterior chamber depth, pupillary diameter and macular thickness were assessed by means of optical coherence tomography.
Once the study (among patients of an average age of 33,8 ± 6,3 years, i.e. between 26-50) had come to an end, he determined that the preoperative average spherical equivalent equalled -7,793 ± 5,268 and postoperative average spherical equivalent assessed 3 months after surgery equalled -0,094 ± 0,788 D. Foveal thickness before surgery was 287± 24 µm. One month and three months after surgery, foveal thicknesses were respectively 290 and 293. No significant differences were found in any sections. Non-corrected visual acuity improved in every single case and no changes were detected in macular thickness nor in macular volume after surgery.
Results of the macular study
By means of this study, Dr Maseras was able to determine that the implantation of ICL type intraocular lenses makes for an efficient surgical option for the treatment of refractive errors of different ranges. Among the studied patients, no cases of macular edema were developed and spectral domain optical coherence tomography allowed to rule out any significant increase during the period of examination.