Myopia Clinical Trial
Official title:
Correlation Between ICL Vault and Preoperative Refraction ( Spherical Equivalent) and Anterior Segment Parameters Measured by Optical Biometry and Scheimpflug Imaging
This prospective non-comparative interventional study aims to analyse the pre-operative factors affecting the range of optimal ICL vaulting. the main question is what is the correlation between age, gender, spherical equivalent, white to white, anterior chamber volume and depth and postoperative vault? participants will do preoperative investigations ( specular microscopy, pentacam and biometry ) then refractive surgery (ICL implantation) followed by follow-up visits to assess the post-operative ICL vault and visual outcome.
Procedure: Refractive error correction by implantable contact lens ( ICL) will be preceded by a Preoperative assessment of the patient's anterior segment using specular Microscopy, pentacam and biometry and full ophthalmic examination. Post-operatively, visual acuity evaluation, intraocular pressure, and anterior and posterior segments examination using a slit lamp will be done on days 1 and 3 and then repeated after 1 month and 6 months Assessment of ICL vault measurement using pentacam scheimpflug imaging after 1 and 6 months will be done then a correlation between the ICL vault and the patient's refractive error and preoperative anterior segments parameters will be evaluated ;
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