Comparison Of Toric Iol Stability When Implanted Under Balanced Salt Solution Vs Ophthalmic Viscosurgical Device

To check for the rotational stabilty of toric IOL  when implanted under balanced salt solution vs viscosurgical device.

Prospective , interventional clinical trial where ,in 50 cataractous eyes toric IOL was implanted under BSS  and under OVD in 50 eyes.

• Total of 100 eyes of 100 patients satisfying the inclusion criteria will be included in the study.  Phacoemulsification was performed with implantation of the Toric IOL. 
• Pre-op Characteristics were noted. Biometery was performed using the Barrett’s TK toric formula implemented in the IOL Master 700.
• The recommended A-constants were used and emmetropia was targetted.
• Surgeries were performed by a single surgeon.Toric iol under BSS (Group 1),  under OVD(Group 2). Intraoperatively,  markerless system (Callisto eye -Carl Zeiss Meditech)was used for toric IOL placement along the intended axis. 

• Post operatively, UDVA, CDVA, IOL axis, IOL rotation and residual astigmatism was noted at post op day1 and day 7, 2 weeks and 2 months.
• IOL axis and IOL rotation was measured with iTrace(Tracey Technologies).

Group 1 ( BSS) showed IOL rotation of 3.58 +/- 2.56 , whereas Group 2 ( OVD)  showed IOL rotation of 5.02 +/-3.31 with p value being 0.01. which considerably shows a significant change of IOL rotation in OVD cases as compared to BSS group.

From the above results ,we conclude that Toric IOL stability is morre and least chances of rotation when implanted under BSS as compared to ovd because a little ammount of ovd left doesnot allows the anterior and posterior capsule to fuse around the IOL optic, creating space and chances of rotation.