In a recent Letter to the Editor authored by Daungsupawong et al. in Aesthetic Plastic Surgery, titled \"ChatGPT and Clinical Questions on the Practical Guideline of Blepharoptosis: Correspondence,\" the authors emphasized important points regarding the input language differences between input and output references. However, advanced versions, such as GPT-4, have shown marginal differences between English and Chinese inputs, possibly because of the use of larger training data. To address this issue, non-English-language-oriented large language models (LLMs) have been developed. The ability of LLMs to refer to existing references varies, with newer models, such as GPT-4, showing higher reference rates than GPT-3.5. Future research should focus on addressing the current limitations and enhancing the effectiveness of emerging LLMs in providing accurate and informative answers to medical questions across multiple languages.Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

BACKGROUND: ChatGPT is a free artificial intelligence (AI) language model developed and released by OpenAI in late 2022. This study aimed to evaluate the performance of ChatGPT to accurately answer clinical questions (CQs) on the Guideline for the Management of Blepharoptosis published by the American Society of Plastic Surgeons (ASPS) in 2022.
METHODS: CQs in the guideline were used as question sources in both English and Japanese. For each question, ChatGPT provided answers for CQs, evidence quality, recommendation strength, reference match, and answered word counts. We compared the performance of ChatGPT in each component between English and Japanese queries.
RESULTS: A total of 11 questions were included in the final analysis, and ChatGPT answered 61.3% of these correctly. ChatGPT demonstrated a higher accuracy rate in English answers for CQs compared to Japanese answers for CQs (76.4% versus 46.4%; p = 0.004) and word counts (123 words versus 35.9 words; p = 0.004). No statistical differences were noted for evidence quality, recommendation strength, and reference match. A total of 697 references were proposed, but only 216 of them (31.0%) existed.
CONCLUSIONS: ChatGPT demonstrates potential as an adjunctive tool in the management of blepharoptosis. However, it is crucial to recognize that the existing AI model has distinct limitations, and its primary role should be to complement the expertise of medical professionals.
METHODS: Observational study under respected authorities. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Palpebral ptosis indicates the abnormal drooping of the upper lid, caused by partial or total reduction in levator muscle function. It may be caused by various pathologies, both congenital and acquired. Based on a review of the available literature and on our own clinical experience, a classification is proposed as well as a differential diagnosis between ptosis and pseudoptosis. Some basic surgical guidelines related to age of onset and etiopathogenesis are drawn. Ptosis is divided into neurogenic, myogenic, aponeurotic, and mechanical. The aim of surgery is two fold: functional, to correct the limit in the visual field; and also aesthetic. From January 2000 to January 2004, 42 patients were referred and treated at the Unit of Cranio-Maxillofacial Surgery-Centre for Orbital Pathology and Surgery, Hospital and University, Ferrara, Italy. Of these, 12 cases were congenital and 30 acquired (13 were monolateral and 29 bilateral, for a total of 71 cases). The most widely used surgical techniques were levator muscle recession and frontalis suspension. In congenital forms, these techniques were often associated with techniques to correct oculo-muscular imbalance (i.e., strabismus).Seventy-one upper eyelids were treated, 5 of which were mild, 35 moderate, and 31 severe. Regarding levator muscle function, 60 were fair and 11 poor.Surgical treatment followed the indications and timing with good morphologic and aesthetic results. Complications included two cases of hypocorrection, two asymmetries, and two cases of hypercorrection. Surgical treatment of palpebral ptosis is complex and requires precise diagnosis and indications for surgery related to clinical examination and pathogenesis. Even if these indications are strictly followed, in some cases, the outcomes are unpredictable.