L Moqeet Khan M Abdul Du, Saad Alam Khan, Hina Sharif.
Visual Outcomes and Ocular Attributes of Mechanical Implantation of Intracorneal Ring Segments-A Longitudinal Hospital Based Study.
Al-Shifa J Ophthalmol Jan ;16(1):22-30.

It was interventional uncontrolled trial in which patients having manual implantation of Intra corneal ring segment were included. Visual acuity, spherical equivalent, maximum keratometric readings, corneal astigmatism and endothelial cell density was measured at fixed intervals. Any changes in visual acuity after surgery, spherical equivalent and K-Max were noted and statistically analyzed.

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