探讨24h眼压检查对青光眼诊断的意义

目的:评价24h眼压测量在青光眼患者诊断中的意义。方法:选择青光眼疑似患者51例51眼,使用Goldmann眼压计进行24h眼压测量。结果:所有患者中,21眼(41.2%)的眼压在正常范围内且昼夜眼压波动小于6mmHg(1mmHg=0.133kPa),30眼(58.8%)出现昼夜眼压波动过大或峰值眼压高于21mmHg。其中7例出现仅有夜间高眼压且最高者达54mmHg,白天自然缓解到正常范围。24h眼压平均值及高峰值与门诊眼压记录相比,差异均具有统计学意义(P<0.01)。结论:24h眼压测量与门诊检查眼压相比,能更好地发现高眼压和昼夜眼压波动异常患者。     

疑似青光眼患者24小时眼压变动规律的临床研究

目的研究疑似青光眼患者的24h眼压变动规律。方法选择疑似青光眼患者158例（316只眼）,进行24h眼压测量,测量自清晨9：00开始至第2天清晨7：00,每2h测1次眼压。结果进入研究的316只眼中,只有113只眼（35.8%）的眼压在正常范围内且昼夜眼压波动小于8mmHg（1mmHg=0.133kPa）,80只眼（26.1%）出现昼夜眼压波动过大或峰值眼压高于21mmHg,123只眼（39.1%）出现昼夜眼压波动过大且峰值眼压高于21mmHg。眼压高峰最常出现在11AM和11PM到次日5AM,眼压低谷最常见于5PM和9PM。结论24h眼压波动个体差异较大,但其仍是发现夜间异常眼压和昼夜眼压波动异常的一种好方法。     

高眼压症及原发性开角型青光眼患者的24 h眼压波动规律

目的 通过24 h眼压测量来深入分析对比高眼压症与原发性开角型青光眼(POAG)患者的眼压曲线特征。方法 收集2016年1月~2019年3月在我科门诊诊断为高眼压症的患者52例(104眼)及POAG尚未接受降眼压治疗的患者38例(76眼)。入院后行24 h眼压检查,用非接触性眼压计从早9时起每隔2 h测量眼压1次,至次日7时结束。分析2组患者的平均眼压,峰值眼压及时间点,谷值眼压及时间点,昼夜眼压波动及双眼眼压压差值及其分布情况,比较2组眼压波动的异同点。结果 104眼高眼压症患者的平均眼压为(18.73±1.71)mmHg(1 mmHg=0.133 kPa),平均峰值眼压为(22.36±2.40) mmHg,平均谷值眼压为(15.63±2.09) mmHg,平均昼夜眼压波动为(6.72±2.24) mmHg。76眼POAG患者的平均眼压为(20.65±2.53) mmHg,平均峰值眼压为(25.78±2.81) mmHg,平均谷值眼压为(17.45±2.54) mmHg,平均昼夜眼压波动为(8.34±2.37) mmHg。2组的峰值及谷值眼压值分布最多的时间点均为凌晨3时及夜晚21时,大部分患者的峰值眼压时间点在门诊时间之外。高眼压症组中昼夜眼压波动位于5~8 mmHg的占比最大,为54.81%(57/104),POAG组中昼夜眼压波动>8 mmHg的占比最大,为53.95%(41/76)。高眼压症组中,16例患者经24 h眼压检查后监测到眼压波动异常,占比为30.77%(16/52);POAG组中经24 h眼压检查后有29例患者可以监测到眼压波动异常,占比为76.32%(29/38)。结论 24 h眼压监测中,POAG患者较高眼压症患者的平均眼压、峰值眼压、谷值眼压、昼夜眼压波动及双眼压差均有增加。对于24 h眼压发现眼压波动较大的高眼压症患者应在后续加强密切随访,而对于POAG患者24 h眼压监测可在治疗前提供眼压的基线水平,为后续治疗提供参考及评估依据,因此建议将24 h眼压作为高眼压症及POAG的常规检查手段。     

正常眼压性青光眼的24小时眼压测量临床价值

目的 评估24h眼压测量在正常眼压性青光眼中的意义,以更好地指导临床应用.方法 于2008年1月至2011年2月正常眼压性青光眼(NTG)患者共86例(86只眼)入选本研究,应用非接触眼压计自清晨8:00开始至第二天清晨8:00,每两小时测量一次,共12次;采用A型超声波角膜测厚仪对中央角膜厚度进行测定.结果 所有86只眼的24h眼压测量值中,29只眼(33.7％)在正常范围内且昼夜眼压波动小于5 mm Hg,而57只眼(66.3％)出现异常.所有患者昼夜眼压曲线中眼压低谷值为(13.78±1.39) mm Hg眼压高峰值为(18.52±1.81) mm Hg,分别出现于18:00～20:00和夜间2:00.根据24 h最高眼压是否高于21 mm Hg分为高眼压组和低眼压组,两组年龄差异显著有统计学意义,而中央角膜厚度无明显差异.结论 24 h眼压测量应作为正常眼压性青光眼患者诊断的常规检查,能提高夜间眼压高峰及昼夜波动过大的检出率,避免漏诊误诊的发生.     

日间与昼夜眼压曲线对异常眼压测量能力的比较

目的评价日间眼压曲线与昼夜眼压曲线对异常眼压测量的能力。方法对就诊于北京同仁眼科中心的21例原发性开角型青光眼（POAG）、11例可疑正常眼压性青光眼（SNTG）及24例可疑青光眼患者进行昼夜眼压曲线测量。间隔2 h后,先使用手持式压平眼压计测量24 h的卧位眼压得到昼夜卧位眼压曲线。在9：30、11：30、13：30、15：30,患者完成卧位眼压测量5 min后测量坐位眼压,5 min后再使用非接触眼压计测量眼压,分别得到日间卧位眼压曲线、日间坐位眼压曲线和日间非接触眼压曲线。定义眼压峰值〉21 mmHg时为峰值异常,眼压波动〉5 mmHg时为波动异常。分析日间眼压曲线与昼夜眼压曲线均值、峰值及波动值间是否存在差异。结果不同组别昼夜眼压均值为（20.24±2.45）～（22.32±6.02）mmHg,较日间眼压均值高-0.19～6.37 mmHg;昼夜眼压峰值在（24.17±3.42）～（26.43±6.23）mmHg,较日间眼压峰值高1.75～8.76 mmHg;昼夜眼压波动在（8.00±3.47）～（9.09±3.83）mmHg,较日间眼压波动高3.59～6.00 mmHg。眼压峰值多出现于夜间睡眠时,POAG、SNTG和可疑青光眼患者眼压峰值出现于23：30～5：30的概率分别为57.14%、72.73%和66.67%。日间眼压曲线无法确定昼夜眼压波动的异常,若以昼夜眼压曲线作为金标准,各组的敏感性为10.00%～36.84%。结论56例患者的峰值眼压多发生在夜间睡眠时,日间和昼夜眼压曲线测得的眼压均值、峰值、波动及发现异常眼压的能力存在差异,依靠日间眼压曲线很难对昼夜眼压的情况做出准确判断。     

测量间隔时间对24 h眼压波动的影响

目的 观察青光眼和疑似青光眼患者24 h眼压波动规律及不同测量间隔时间对其的影响.方法 选择疑似及确诊青光眼患者60例(120眼),进行24 h眼压测量.所有患者上午8:00至晚上23:00,每1h测量一次眼压,晚上23:00至第2天早上7:00每2 h测量一次,共20次.结果 68眼(56.7%)眼压异常.眼压低谷出现在晚上19:00至23:00(52眼,43.3%),平均眼压为(16.17±5.56)mmHg(1 kPa=7.5 mmHg);高峰出现在上午9:00至11:00(41眼,34.2%)和第2天凌晨1:00至5:00(42眼,35.O%),平均眼压分别为(18.28±5.27)mmHg和(17.95 4±6.40)mmHg.按间隔时间1 h、2 h、3 h、4 h对测量数据统计,其阳性率分别为45.8%、35.8%、27.5%、21.7%;而阴性率分别为5.8%、16.7%、25.8%、49.4%.结论 青光眼及疑似青光眼患者的眼压高峰不但出现在上午也出现在凌晨睡眠时间.为更好地观察患者眼压的波动情况,应尽量缩短24 h眼压测量的间隔时间.     

可疑青光眼48小时眼压变动规律的临床研究

目的探讨可疑青光眼患者48 h眼压变动规律。方法选择临床上疑似青光眼患者180例(360只眼),进行48 h眼压测量。测量自入院时10AM开始至第3天清晨8AM,取偶数时间点,每2 h测量1次眼压。结果进入研究的360只眼中,130只眼(36.11%)的眼压昼夜波动小于8 mm Hg,230只眼(63.89%)出现昼夜波动过大。眼压高峰通常出现在2AM、4AM、6AM和8AM几个时间点,最少出现在6PM、8PM、10PM时间点。结论 48 h眼压的波动存在个体差异,对于可疑青光眼的临床诊断和治疗具有一定的参考价值。     

24小时眼压监测中夜间眼压测量方法的探讨

目的比较24h眼压监测中夜间即刻坐位眼压值和坐起休息10min后测得的眼压值,探讨夜间眼压的不同测量方法对青光眼24h眼压昼夜波动的影响。方法对已确诊且未用药、未做过手术的48例正常眼压性青光眼及17例原发性开角型青光眼患者进行24h眼压监测,每2h1次,其中测量夜间0:00、2:00、4:00眼压时,逐个唤起患者后立即测,后嘱患者坐起休息10min再测,采用SPSS软件以配对t检验分析比较测量结果。结果夜间即刻坐位眼压值和坐起休息10min后测得的眼压值差异有统计学意义(P<0.001),正常眼压性青光眼与原发性开角型青光眼间眼压差值差异有统计学意义(P<0.05)。结论即刻坐位眼压值能更准确反映夜间眼压,对24h眼压测量及青光眼诊断及治疗更有价值,值得临床应用。     

正常眼压性青光眼24小时眼压波动的研究进展

正常眼压性青光眼(normal-tension glaucoma, NTG)是一种慢性进行性视神经病变, 发病时眼压在正常范围内。NTG在开角型青光眼中的占比较高。在NTG的诊断中, 24 h眼压测量尤其重要, 是与原发性开角型青光眼相鉴别的主要体征。NTG患者24 h眼压监测通常表现为夜间出现眼压峰值, 且其眼压的昼夜波动幅度往往比正常人大。且24 h眼压的平均眼压、短期和长期眼压波动幅度、最小眼压值都显示为NTG疾病进展中的预测参数。这使得NTG患者24 h眼压监测及根据其24 h眼压波动特点进行个体化治疗变得尤为重要。(国际眼科纵览, 2023, 47:24-29)     

不同间隔时间测量青光眼患者24h眼压的比较研究

目的比较每隔2h与每隔3h测量24h眼压的差异,从而制订出对患者更方便、更行之有效的24h昼夜眼压监测方法。方法选择青光眼患者27例（54眼）,相同条件下,使用非接触眼压计,分别进行每隔2h与每隔3h的24h眼压测量。比较2h测量组与3h测量组的峰值出现的时间,并比较2h组与3h组的全天时间段和睡眠时间段的峰值眼压、谷值眼压、波动值、平均值眼压。结果2h组中,有59．26％的患者眼压峰值出现在睡眠时间;3h组中,有61．11％的患者眼压峰值出现在睡眠时间,2h组和3h组达峰值的频数差异无统计学意义。全天时段2h组和3h组的眼压峰值、谷值、平均值及眼压波动值比较,差异无统计学意义（P〉0．01）。睡眠时间段2h组和3h组的眼压峰值、谷值及平均值比较,差异无统计学意义（P〉0．01）,2h组眼压波动值大于3h组（P〈0．01）。结论24h眼压监测能更好地发现青光眼的高眼压和昼夜眼压波动异常。使用非接触眼压计每隔3h昼夜眼压监测可以代替2h发现高眼压和眼压波动异常,是既行之有效,又更为简单的方法。     

Diurnal variation of intraocular pressure in suspected glaucoma patients and their outcome

Background A case-controlled prospective study was conducted to evaluate the diurnal variation of intraocular pressure (IOP); the mean, the amplitude of variation and the peak and trough times of pressure readings in the suspected open-angle glaucoma patients as compared with a control group. We also looked at the outcome of these suspects after diurnal variation of IOP measurements. Methods Diurnal variation of intraocular pressure was measured in 202 eyes of suspected open-angle glaucoma patients and 100 control eyes, at 4-hourly intervals for 24 hours (phasing). Based on the phasing results, optic disc changes and visual field defects, the patients were diagnosed as primary open angle glaucoma (POAG), normal tension glaucoma (NTG), ocular hypertension (OHT), or physiologic cup (PC), or still remained as glaucoma suspects due to inconclusive diagnosis. The last group (glaucoma suspects) was then followed up 6-monthly for their eventual outcome. Results The highest percentage of suspected glaucoma patients had peak (maximum) readings in the mid-morning (10–11 a.m.) and trough (minimum) readings after midnight (2–3 a.m.); the highest percentage of control group had peak readings in the late evening (6–7 p.m.) and trough readings after midnight (2–3 a.m.). The mean amplitude of variance was 6 mm Hg in suspected glaucoma group and 4 mm Hg in the control group. After ‘phasing’, 18.8% of the suspected glaucoma patients were diagnosed as POAG, 16.8% as NTG, 5% as OHT, and 28.7% as physiologic cup; 30.9% remained as glaucoma suspects. After 4 years follow-up, 70% of the glaucoma suspects still remained as glaucoma suspects, 6.7% developed NTG and another 6.7% POAG; 16.6% were normal. Conclusions Serial measurement of IOP ( phasing) in a 24-hour period is still needed, in order not to miss the peak and the trough IOP readings in suspected open-angle glaucoma patients, which helps in better management of glaucoma. Among 30.9% of patients who remained as glaucoma suspects after the initial phasing, 13.4% developed NTG/POAG over a period of 4 years. This paper was presented in part at the 19th Congress of Asia Pacific Academy of Ophthalmology (APAO), Bangkok, Thailand, 28 November-3 December 2003. The authors have no financial support in the writing of this paper.     

Diurnal fluctuation and concordance of intraocular pressure in glaucoma suspects and normal tension glaucoma patients

PURPOSE: The study objective was to determine the concordance of intraocular pressure (IOP) in glaucoma suspects (GS) and normal tension glaucoma (NTG) patients. METHODS: This was a retrospective review of diurnal curves of untreated GS and NTG patients. No subject had IOP greater than 21 mm Hg. We defined GS patients as having suspicious optic nerves with normal visual fields, and NTG patients as having glaucomatous optic nerves with associated visual field loss. Goldmann applanation tonometry was performed at 10:00, 13:00, 16:00, 19:00, 22:00, and 07:00. Linear association of OD and OS IOP was estimated using Pearson correlation coefficient (r). The diurnal period was divided into 7 time intervals of 3, 6, 9, 12, 15, 18, and 21 hours, and the absolute difference in change in IOP between fellow eyes and probability that it was within 3 mm Hg were calculated. RESULTS: The study included 68 GS and 95 NTG subjects. The diurnal curves of the OD and OS showed a parallel course in both groups. The average correlations (r) of OD and OS IOP over the 6 time points were 0.78 and 0.81 for GS and NTG, respectively. The mean absolute difference in IOP change between OD and OS over the 6 time intervals ranged between 1.4 and 1.9 mm Hg for GS, and 1.3 and 1.5 mm Hg for NTG subjects. The probability that this difference was within 3 mm Hg ranged between 87% and 94% for GS, and 86% and 93% for NTG subjects. CONCLUSIONS: The diurnal variation in IOP between the 2 eyes in GS and NTG is largely concordant in approximately 90% of the time.     

24-hour monitoring of intraocular pressure in glaucoma management: a retrospective review

PURPOSE: Diurnal variation in intraocular pressure (IOP) is well recognized, yet important decisions in glaucoma management are frequently made after 1 or 2 IOP measurements. Twenty-four-hour monitoring of IOP may identify IOP variation and spikes. This study determined the value of 24-hour IOP monitoring in routine clinical practice. METHODS: Data were acquired retrospectively from case notes of 29 glaucoma patients sequentially admitted for 24-hour IOP monitoring while taking their established antiglaucoma therapy. RESULTS: While there was no difference between the mean clinic (office) and mean 24-hour IOP measurements, the peak IOP during 24-hour monitoring was on average 4.9 mm Hg higher than the peak clinic IOP (P<0.0001). In 4 (13.8%) patients, the peak IOP over 24 hours was at least 12 mm Hg higher than the clinic peak. Peak IOP values occurred outside normal office hours in 51.7% of patients. Twenty-four-hour IOP monitoring resulted in a change of clinical management in 23 (79.3%) patients, including 13 (44.8%) who were offered trabeculectomy. CONCLUSION: Twenty-four-hour monitoring of IOP frequently led to a change of glaucoma management by identifying IOP fluctuations and spikes. High IOP and wide diurnal IOP variation are considered major risk factors for glaucoma progression, and standard clinic follow-up evaluations failed to identify these phenomena.     

Five-year risk of progression of ocular hypertension to primary open angle glaucoma. A population-based study

PURPOSE: To report the progression of ocular hypertension (OHT) to primary open angle glaucoma (POAG) during a 5-year follow up of a population-based sample. METHODS: Twenty-nine patients diagnosed to have OHT and 110 randomly selected normals from a population-based study in 1995 were invited for ocular examination in 2000. All patients underwent a complete ophthalmic examination; including the daytime diurnal variation of intraocular pressure (IOP) and measurement of central corneal thickness (CCT). The "corrected" IOP was used for analysis. Progression to POAG was based on typical optic disc changes with corresponding field defects on automated perimetry. RESULTS: Twenty-five of the 29 persons with OHT who could be contacted were examined. After correcting for CCT, two persons were reclassified as normal. Four of 23 (17.4%; 95% CI: 1.95-32.75) had progressed to POAG. One person amongst the 110 normals progressed to normal tension glaucoma (NTG). The relative risk of progression amongst OHT was 19.1 (95% CI: 2.2-163.4). All those who progressed had bilateral OHT. The mean and peak IOP in those who progressed was 25.4 mm Hg and 29.3 mm Hg compared to 23.9 mm Hg and 25.7 mm Hg in those who did not. Those who progressed had more than 8 mm Hg diurnal variation. The diurnal variation was less than 6 mm Hg in those who did not progress. No patient developed blindness due to glaucoma. CONCLUSION: The 5-year incidence of POAG amongst OHT in this population was 17.4% (3.5% per year). Bilateral OHT, higher peak IOP and large diurnal variation may be the risk factors for progression.     

Diurnal variation of intraocular pressure of normal-tension glaucoma. Influence of sleep and arousal

The measurement of the diurnal variation of intraocular pressure (IOP) is indispensable for the diagnosis of normal-tension glaucoma (NTG). To determine the diurnal variation of IOP, its measurement has to be made repeatedly for 24 hours, which interferes with patients's sleep at night and may influence the physiologic IOP variation. The authors studied the IOP variation in 82 NTG suspects, whose IOP was first measured every 2 hours for 24 hours. The following night they were suddenly aroused without any notice and IOP was measured. The diurnal IOP variation of NTG patients was found to be similar to that of the normal population and there was no significant difference in the IOP values at the same time points on the two successive nights. Sleep may have little, if any, influence on diurnal IOP variation in NTG patients.     

Effect of concomitant use of latanoprost and brinzolamide on 24-hour variation of IOP in normal-tension glaucoma

PURPOSE: To study the effect of the concomitant use of latanoprost and brinzolamide on the 24-hour variation in the intraocular pressure (IOP) in patients with normal-tension glaucoma (NTG). METHODS: We studied a total of 44 eyes from 22 NTG patients. Mean 24-hour IOP variation was determined after a washout period of > or =4 weeks. Latanoprost monotherapy was continued in both eyes for 8 weeks. Thereafter, patients were randomized to continue latanoprost monotherapy in 1 eye whereas brinzolamide was added as an adjunct to latanoprost therapy in the other eye. Eight weeks after the initiation of brinzolamide treatment, the 24-hour IOP variation was remeasured. IOP was measured in the sitting position 8 times daily using a Goldmann applanation tonometer before and after treatment. RESULTS: The eyes treated with latanoprost monotherapy and those treated with latanoprost and brinzolamide showed a significant decrease in IOP at all time points. Percent reductions in the diurnal mean IOP (mean IOP at 10 AM, 1 PM, and 4 PM) and in nocturnal mean IOP (mean IOP at 10 PM, 1 AM, and 3 AM) were significantly greater in the eyes treated with the combination of latanoprost and brinzolamide than those with latanoprost alone (diurnal mean IOP: latanoprost and brinzolamide=19.8%, latanoprost=14.1%, P<0.001; nocturnal mean IOP: latanoprost and brinzolamide=13.4%, latanoprost=10.0%, P<0.05). CONCLUSIONS: For the treatment of NTG, the combination of latanoprost and brinzolamide demonstrated additive effects in lowering IOP, not only during the day, but also at night.     

Impact of intraocular pressure fluctuations on progression of normal tension glaucoma

AIM: To investigate short- and long-term intraocular pressure (IOP) fluctuations and further ocular and demographic parameters as predictors for normal tension glaucoma (NTG) progression. METHODS: This retrospective, longitudinal cohort study included 137 eyes of 75 patients with NTG, defined by glaucomatous optic disc or visual field defect with normal IOP (<21 mm Hg), independently from therapy regimen. IOP fluctuation, mean, and maximum were inspected with a mean follow-up of 38mo [standard deviation (SD) 18mo]. Inclusion criteria were the performance of minimum two 48-hour profiles including perimetry, Heidelberg retina tomograph (HRT) imaging, and optic disc photographs. The impact of IOP parameters, myopia, sex, cup-to-disc-ratio, and visual field results on progression of NTG were analyzed using Cox regression models. A sub-group analysis with results from optical coherence tomography (OCT) was performed. RESULTS: IOP fluctuations, average, and maximum were not risk factors for progression in NTG patients, although maximum IOP at the initial IOP profile was higher in eyes with progression than in eyes without progression (P=0.054). The 46/137 (33.5%) eyes progressed over the follow-up period. Overall progression (at least three progression confirmations) occurred in 28/137 eyes (20.4%). Most progressions were detected by perimetry (36/46). Long-term IOP mean over all pressure profiles was 12.8 mm Hg (SD 1.3 mm Hg); IOP fluctuation was 1.4 mm Hg (SD 0.8 mm Hg). The progression-free five-year rate was 58.2% (SD 6.5%). CONCLUSION: Short- and long-term IOP fluctuations do not result in progression of NTG. As functional changes are most likely to happen, NTG should be monitored with visual field testing more often than with other devices.     

原发性开角型青光眼患者及正常人的眼压日内波动趋势

目的研究原发性开角型青光眼（POAG）、正常眼压性青光眼（NTG）患者及正常人双眼眼压昼夜波动趋势及其眼压峰值出现的规律，比较双眼眼压波动趋势是否一致。设计前瞻性病例系列。研究对象POAG、NTG患者及正常对照各30例。方法用Goldmann压平眼压计测量眼压日曲线，比较双眼的日眼压波动模式及眼压峰值分布。主要指标眼压测量值。结果眼压峰值出现于非办公时段的正常人为右眼6．7％、左眼10．0％；NTG患者为右眼20．0％、左眼23．3％；POAG患者为右眼23．3％、左眼20.0％。结论POAG、NTG患者和正常人有着不同的眼压昼夜波动模式，且双眼的波动趋势不尽相同，不能完全将双眼等同看待；部分观察对象的峰值眼压分布于非办公时段，办公时段多次眼压测量不能完全代替一日眼压监测。（眼科，2007,16：33．36）     

Large diurnal variation of intraocular pressure despite maximal medical treatment in juvenile open angle glaucoma

PURPOSE: To report the clinical significance of large fluctuations in intraocular pressure (IOP) and the effect of trabeculectomy on diurnal IOP variations in 2 cases of maximally medically treated juvenile open angle glaucoma (JOAG). PATIENTS AND METHODS: A 24-hour IOP monitoring was performed before and after trabeculectomy on both eyes of 2 JOAG patients-one with transiently blurred vision early in the morning, the other with progression of visual field defect despite apparently well-controlled IOP. The patients' optic discs were scanned with Heidelberg retina tomograph (HRT) during peak and trough IOPs before trabeculectomy. RESULTS: Preoperatively, diurnal IOP varied widely up to 20/19 (OD/OS) mm Hg in case 1 and up to 16/22 (OD/OS) mm Hg in case 2, even though both patients were using 4 different types of antiglaucoma eye drops. Peak IOP was associated with temporary blurring of vision and mild corneal edema in 1 patient (case 1). Heidelberg retina tomograph revealed a deepening of the optic cup and a resultant narrowing of the neuroretinal rim at peak IOP in this patient; this was not detected in the second patient who had tilted optic discs. After trabeculectomy, diurnal IOP fluctuations were reduced to 4-6/2-4 (OD/OS) mm Hg in case 1 and to 6-7/3-7 (OD/OS) mm Hg in case 2, with a decrease in peak IOPs as well. CONCLUSIONS: Wide diurnal variation should be suspected in JOAG patients, even when receiving maximal medical treatment; this is especially important in cases with temporary blurred vision and/or progression of visual field defect despite apparently well-controlled IOP. Trabeculectomy was more effective in reducing diurnal IOP variation than medical treatment.