360 degrees prophylactic cryoretinopexy. A clinical and experimental study

Area of Science:

• Ophthalmology
• Retinal Surgery

Background:

• Eyes with a history of aphakic retinal detachment in one eye are at high risk.
• Prophylactic cryoretinopexy is sometimes used to prevent retinal detachment in these high-risk eyes.

Purpose of the Study:

• To evaluate the complications associated with 360-degree prophylactic cryoretinopexy in high-risk eyes.
• To investigate the potential for cryoretinopexy to induce preretinal membrane formation.

Main Methods:

• Clinical case series of six eyes undergoing 360-degree prophylactic cryoretinopexy.
• Experimental study in rhesus monkeys using 360-degree cryoretinopexy to induce preretinal membrane formation.

Main Results:

• Three of six prophylactically treated eyes experienced complications.
• Two eyes developed retinal detachment before planned cataract surgery.
• One eye developed vitreitis and preretinal membrane formation post-cataract extraction.
• Experimental cryoretinopexy in monkeys successfully produced preretinal membranes.

Conclusions:

• Excessive cryoretinopexy, even when prophylactic, carries a significant risk of complications.
• Careful application of cryoretinopexy is crucial, especially on non-detached retinas, to avoid iatrogenic damage.
• The use of 360-degree cryoretinopexy in high-risk eyes requires judicious consideration due to potential adverse outcomes.