Changes in Tear Osmolarity after Cataract Surgery

Igarashi, Tsutomu; Takahashi, Hisatomo; Kobayashi, Maika; Kunishige, Tomoyuki; Arima, Takeshi; Fujimoto, Chiaki; Suzuki, Hajime; Okuda, Takahisa; Takahashi, Hiroshi

doi:10.1272/jnms.jnms.2021_88-405

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…The negative impact of dry eye on the surgical outcome of cataracts has been widely described [ 80 , 81 , 82 , 83 ]. Several studies have shown an increase in the signs and symptoms of dry eye after cataract surgery [ 84 , 85 , 86 , 87 , 88 , 89 , 90 ]. A recent meta-analysis found that patients with prior MGD are at increased risk of postoperative dry eye [ 87 ].…”

Section: Use Of Thermography In Ophthalmologymentioning

confidence: 99%

Applications of Infrared Thermography in Ophthalmology

Gulías-Cañizo

Rodríguez-Malagón

Botello-González

et al. 2023

Life

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Body temperature is one of the key vital signs for determining a disease’s severity, as it reflects the thermal energy generated by an individual’s metabolism. Since the first study on the relationship between body temperature and diseases by Carl Reinhold August Wunderlich at the end of the 19th century, various forms of thermometers have been developed to measure body temperature. Traditionally, methods for measuring temperature can be invasive, semi-invasive, and non-invasive. In recent years, great technological advances have reduced the cost of thermographic cameras, which allowed extending their use. Thermal cameras capture the infrared radiation of the electromagnetic spectrum and process the images to represent the temperature of the object under study through a range of colors, where each color and its hue indicate a previously established temperature. Currently, cameras have a sensitivity that allows them to detect changes in temperature as small as 0.01 °C. Along with its use in other areas of medicine, thermography has been used at the ocular level for more than 50 years. In healthy subjects, the literature reports that the average corneal temperature ranges from 32.9 to 36 °C. One of the possible sources of variability in normal values is age, and other possible sources of variation are gender and external temperature. In addition to the evaluation of healthy subjects, thermography has been used to evaluate its usefulness in various eye diseases, such as Graves’ orbitopathy, and tear duct obstruction for orbital diseases. The ocular surface is the most studied area. Ocular surface temperature is influenced by multiple conditions, one of the most studied being dry eye; other diseases studied include allergic conjunctivitis and pterygium as well as systemic diseases such as carotid artery stenosis. Among the corneal diseases studied are keratoconus, infectious keratitis, corneal graft rejection, the use of scleral or soft contact lenses, and the response to refractive or cataract surgery. Other diseases where thermographic features have been reported are glaucoma, diabetic retinopathy, age-related macular degeneration, retinal vascular occlusions, intraocular tumors as well as scleritis, and other inflammatory eye diseases.

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Section: Use Of Thermography In Ophthalmologymentioning

confidence: 99%

Applications of Infrared Thermography in Ophthalmology

Gulías-Cañizo

Rodríguez-Malagón

Botello-González

et al. 2023

Life

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“…After cataract surgery, signs of dry eye include a decreased tear breakup time, decreased corneal sensitivity, and increased ocular surface staining [ 2 , 4 , 5 ]. The pathogenic factors consist of inflammation, microscopic damage, neurosensory destruction on the ocular surface, tear film instability, and hyperosmolarity [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Dry Eye Following Femtosecond Laser-Assisted Cataract Surgery: A Meta-Analysis

Chen

Hung

2022

JCM

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This study investigates the dry eye effect after femtosecond laser-assisted cataract surgery (FLACS) and also compares the risk of postoperative dry eye between FLACS and manual cataract surgery (MCS). We searched various databases between 1 January 2000 and 15 October 2022 and included peer-reviewed clinical studies in our review. Dry eye parameters were extracted at baseline and postoperative day one, week one, one month, and three months. Parameters included were the ocular surface discomfort index (OSDI), tear secretion (tear meniscus height, Schirmer’s test), microscopic ocular surface damage (fluorescein staining), and tear stability (first and average tear breakup time). Additionally, the differences of each parameter at each time point were compared between FLACS and MCS. In total, six studies of 611 eyes were included. On postoperative day one, increased, pooled standardised mean differences (SMDs) were noted in the OSDI, tear secretion, tear film instability, and microscopic damage. During postoperative week one, dry eye worsened. Fortunately, dry eye achieved resolution afterwards and nearly returned to the baseline level at postoperative three months. When the parameters were compared between FLACS and MCS, those of FLACS had higher severities, but most were not statistically significant. Dry eye impact was approximately the same in FLACS and MCS at postoperative three months.

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“…Đối chiếu độ thẩm thấu nước mắt ở các thời điểm trước mổ, sau mổ 01 tuần, 01 tháng và 03 tháng với các nghiên cứu khác Độ thẩm thấu của phim nước mắt tại thời điểm trước phẫu thuật trong nghiên cứu của chúng tôi cao hơn so với nghiên cứu của Tsutomu Igarashi[10] là do chúng tôi sử dụng máy đo độ thẩm thấu Ipen khác với máy đo độ thẩm thấu TearLab được sử dụng trong nghiên cứu của Tsutomu Igarashi.…”

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Khảo sát sự mất ổn định của phim nước mắt ở bệnh nhân sau phẫu thuật Phaco

Trần Anh,

Huỳnh Phúc

2023

PNTJMP

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- Đặt vấn đề: Nhiều nghiên cứu chỉ ra rằng phẫu thuật phaco có thể làm thay đổi hình thái phim nước mắt, và có thể gây ra hội chứng khô mắt hoặc làm trầm trọng thêm các triệu chứng khô mắt nếu không được điều trị kịp thời gây nên giảm chất lượng cuộc sống và thị lực của bệnh nhân. Chính vì điều này chúng tôi đã nghiên cứu ảnh hưởng của phẫu thuật đục thủy tinh thể lên sự ổn định của màng nước mắt trên bề mặt nhãn cầu. - Mục tiêu: Đánh giá các chỉ số của phim nước mắt sau phẫu thuật phaco; xác định mức độ khô mắt sau phẫu thuật phaco theo phân độ Sullivian và xác định tỷ lệ khô mắt theo tiêu chuẩn DEWS II và ADES sau phẫu thuật phaco. - Phương pháp nghiên cứu: Nghiên cứu mô tả cắt dọc trên 150 mắt của 142 bệnh nhân không có khô mắt trước phẫu thuật đã trải qua phẫu thuật phaco tại bệnh viện Mắt Phú Yên từ tháng 5/2022 đến tháng 11/2022. - Kết quả: Sau phẫu thuật 01 tuần, giá trị của điểm số OSDI, độ thẩm thấu phim nước mắt đều tăng lên. Nhưng sau phẫu thuật 01 tháng và 03 tháng các chỉ số này lại giảm xuống gần về mức trước phẫu thuật. Sau phẫu thuật 01 tuần, giá trị của test Schirmer, Tear break up time (TBUT) giản xuống. Nhưng sau phẫu thuật 01 tháng và 03 tháng các chỉ số này lại tăng lên gần về mức trước phẫu thuật. Tỷ lệ khô mắt sau phẫu thuật 01 tuần theo DEWS II và ADES là 31,3% và 5,3%, sau 1 tháng là 9,3% và 0,7%. Sau phẫu thuật 03 tháng không phát hiện bệnh nhân nào bị khô mắt. - Kết luận: Sự mất ổn định của phim nước mắt ở bệnh nhân sau mổ là thường gặp và tạm thời, chúng dần hồi phục lại gần giống như lúc đầu ở bệnh nhân không bị khô mắt trước đó. Sự mất ổn định của phim nước mắt không phải là đáng lo ngại nếu bệnh nhân được giải thích và được sử dụng nước mắt nhân tạo sau phẫu thuật ít nhất 3 tháng để giảm thiểu các triệu chứng do khô mắt sau phẫu thuật gây ra. Abstract - Background: Many studies have shown that phacoemulsification can change tear film morphology, and can cause dry eye syndrome or worsen dry eye symptoms if not treated promptly causing loss of quality of life and patient vision. Because of this, we investigated the influence of cataract surgery on the tear film stability on the ocular surface. - Objectives: To describe the change of indicators related to dry eye after phacoemulsification and incidence of dry eye after phacoemulsification. - Materials and method: Longitudinal, descriptive study on 150 eyes of 142 patients who under - went cataract surgery were included in a prospective study at the Eye Hospital in Phu Yen from May 2022 to November 2022. - Results: 1 week after surgery, the values of OSDI score, tear osmolarity both increased. But after 1 month and 3 months after surgery, these indexes dropped to close to the pre - operative level. 1 week after surgery, the value of Schirmer test, Tear break up time (TBUT) decreased. But after 1 month and 3 months after surgery, these indexes increased to nearly the pre - operative level. The incidence of dry eye in 01 week after surgery according to DEWS II and ADES is 31.3% and 5.3%, after 1 month is 9.3% and 0.7%. After 3 months of surgery, no patient had dry eye. - Conclusions: Tear film instability in postoperative patients is common and temporary, they gradually recover to nearly the same as in patients without previous dry eye. Tear film instability is not a cause for concern if the patient is explained and given artificial tears for at least 3 months postoperatively to minimize symptoms caused by postoperative dry eye.

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Changes in Tear Osmolarity after Cataract Surgery

Cited by 9 publications

References 30 publications

Applications of Infrared Thermography in Ophthalmology

Applications of Infrared Thermography in Ophthalmology

Dry Eye Following Femtosecond Laser-Assisted Cataract Surgery: A Meta-Analysis

Khảo sát sự mất ổn định của phim nước mắt ở bệnh nhân sau phẫu thuật Phaco

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