Analysis Of The Clinical Effect Of Icl And Ticl In The Correction Of Myopia With Low Astigmatism

To compare and analyze the clinical effects of ICL and TICL in correcting myopia with low astigmatism.

According to statistics, 88 % of people with ametropia in China have astigmatism above 0.5D.

TICL can correct myopia and astigmatism at the same time, but there is the possibility of rotation after operation,thus new astigmatism appears.

If the ICL is consistent with TICL in correcting low-degree astigmatism, the problem of crystal rotation can be avoided.

case-control study.

From January to June 2022,120 eyes ( 60 eyes of ICL, 60 eyes of TICL ) with myopia and astigmatism ( ≤ 2.00D ) who underwent corneal incision release ICL and TICL in our hospital were collected.

Visual acuity and refractive status were examined before operation and 1 week, 1 month, 3 months, 6 months and 12 months after operation.

One year after operation, the efficacy indexes of the two groups were 1.24 ( ICL ) and 1.21 ( TICL ) ( P > 0.05 ), and the safety indexes were 1.25 ( ICL ) and 1.22 ( TICL ) ( P > 0.05 ).

One year after operation, the equivalent spherical mirror within ± 0.5 D was 72.4 % in ICL group and 82.1 % in TICL group ( P < 0.05 ).

In the ICL group, the average postoperative cylinder was reduced from-0.97 ± 0.24D ( -0.75 ~ -1.50D ) to-0.61 ± 0.33D at 1 year after operation. In the TICL group, the mean cylinder was reduced from − 1.09 ± 0.24D ( − 0.75 ~ − 1.50D ) to − 0.22 ± 0.16D at 1 year after operation.

The astigmatism within ± 0.5 D at 1 year after surgery was 48.3 % in the ICL group and 100 % in the TICL group ( P < 0.05 ).

Both ICL and TICL have good efficacy and safety in correcting myopia with low astigmatism,but TICL has better refractive predictability.

ICL can be used as a good alternative to TICL to correct myopia with low astigmatism, thus avoiding the possibility of crystal rotation.