Clear-The New Method Of Lenticule Extraction For Correction Of Myopia

To evaluate the safety and efficacy of CLEAR - a new method of Corneal Lenticule Extraction for Advanced Refractive correction of Myopia

Bharti Eye Foundation, New Delhi, India a Superspeciaity Eye Hopital

µµ74 eyes undergoing CLEAR with a minimum followup of 6 month of 37 patients were included in this study. All these patients were in the age group of 18 to 28 years with a myopia stable for 1 year and between 2 - 6 D with astigmatism upto 0.75 D not suffering from any systemic or ocular diseases. All patients underwent complete eye examination, cycloplegic refration and dilated fundus examination. All retinal hole and lattices were treated atleast 1 week prior to CLEAR. Pentacam and OCT cornea was done and the True net power, pachymetry and Q values were taken fro Pentacm.

Treatment with CLEAR software provided in Z8 with a target refraction of 0.25 D and Lenticule thickness of -1 D as a default.

All eyes were examined on day 1,7,30 and 90

The default software  with lenticule thickness of -1.0 was used with a target refraction of +0.25 

The results were assessed on the following criteria:

1.Refractive correction; On day 1 there were no significant interface edema. BCVA was achieved in 68 eyes on day 7 and remained stable upto day 90. In remaining 6 eyes the BCVA was achieved by day day 30 and was stable. 3 eyes had residual astigmatism upto 0.75 D not significant to cause poor vision.

Aimed vs achieved pachymetry: The achieved  pachymetry was with in 10µ and commensurate with refractive correction.

Recovery time: recovery time was 1 day and had stable curvature, thickness and visual acuity.

Complications; The lenticule separation was easy and no tear or residual part was observed

 

The CLEAR procedure is safe and accurate. No vision threatening complications were observed in this study and the surgical procedure is easy.