Prosthesis motility with and without intraorbital implants in the anophthalmic socket.

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Prosthetics

Background:

• Enucleation, the removal of an eye, often necessitates the use of an ocular prosthesis.
• The motility and aesthetic appearance of ocular prostheses are crucial for patient quality of life.
• Intraorbital implants aim to improve prosthesis movement and integration.

Purpose of the Study:

• To compare the motility of ocular prostheses in patients with different types of intraorbital implants and without implants.
• To determine the effectiveness of primary versus secondary implantation on prosthesis movement.
• To identify the optimal implant type for achieving natural-looking prosthetic eye movement.

Main Methods:

• Ocular prosthesis motility was quantitatively measured in four groups of patients: primary baseball implant, secondary baseball implant, Allen implant, and no implant.
• Prosthesis movement was compared to the contralateral normal eye across various directions of gaze.
• Statistical analysis was performed to compare motility between groups.

Main Results:

• All prosthetic eyes exhibited some lag in movement compared to normal eyes.
• The primary baseball and Allen implant groups showed sufficient motility for a lifelike appearance during normal gaze.
• Motility was significantly worse in the secondary baseball implant group and markedly impaired in the no-implant group.

Conclusions:

• Intraorbital implants, including secondary implants, substantially enhance ocular prosthesis motility.
• The primary baseball implant is recommended as the preferred choice after enucleation for optimal prosthetic eye function and appearance.