Eyebrow Elevation as a Prognostic Factor for Success of Frontalis Suspension in Severe Congenital Ptosis

Development and validation of a convolutional neural network to identify blepharoptosis

Blepharoptosis is a recognized cause of reversible vision loss and a non-specific indicator of neurological issues, occasionally heralding life-threatening conditions. Currently, diagnosis relies on human expertise and eyelid examination, with most existing Artificial Intelligence algorithms focusing on eyelid positioning under specialized settings. This study introduces a deep learning model with convolutional neural networks to detect blepharoptosis in more realistic conditions. Our model was trained and tested using high quality periocular images from patients with blepharoptosis as well as those with other eyelid conditions. The model achieved an area under the receiver operating characteristic curve of 0.918. For validation, we compared the model's performance against nine medical experts-oculoplastic surgeons, general ophthalmologists, and general practitioners-with varied expertise. When tested on a new dataset with varied image quality, the model's performance remained statistically comparable to that of human graders. Our findings underscore the potential to enhance telemedicine services for blepharoptosis detection.

Factors Affecting the Outcome of Frontalis Sling Surgery in Patients with Severe Blepharoptosis

Background:

Several factors play a role in the outcome of severe blepharoptosis correction by frontalis sling surgery, including the age of a patient, sex, causes of ptosis, and its severity, among others. Identifying the factors that most severely affect surgical outcomes could reduce the complication rate and improve patients’ satisfaction.

Methods:

This was a retrospective analytical study using logistic regression statistics to evaluate the effects of the following 6 factors on frontalis sling surgical outcomes: age, sex, cause of ptosis, type of anesthesia used, eye side (right or left), degree of ptosis, and levator function. These factors were compared with 10 types of surgical outcomes. The study included 120 eyelids in 95 patients, of which 70 eyelids were unilateral and 50 eyelids were bilateral. Patient ages ranged between 2 and 75; patient sex distribution was 47.5% females and 52.5% males.

Results:

The study yielded 60 comparison tables. Only statistically significant and clinically relevant data are presented and discussed. Overall, male patients showed better eye symmetry (P < 0.026) and better satisfaction (P < 0.004) than did females. Causes other than the congenital ptosis are characterized by better eye closure during sleep (P = 0), in comparison with congenital ptosis cases.

Conclusion:

The use of silk suture as a sling material is recommended for male patients, as its use produces better results, including eye symmetry and patient satisfaction, with a lower complication rate compared with that in female patients.