Clinical assessment of the lower tear meniscus height

García-Resúa, Carlos; Santodomingo-Rubido, Jacinto; Lira, Madalena; Giráldez, María Jesús; Vilar, Eva Yebra-Pimentel

doi:10.1111/j.1475-1313.2009.00634.x

Cited by 35 publications

(37 citation statements)

References 48 publications

(147 reference statements)

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“…However, we used the corneal wavefront guided ablation profiles, which have the same origins (topographic measurement) as topography-guided treatments but base upon the optical effects of the topography of the cornea instead of the elevation values of the cornea. We have reported refractive stability and optical benefits using the wavefront guided profiles in normal refractive procedures 19 and therapeutic procedures13, 26 in the past. Furthermore, the calculation of corneal asphericity as a 3-D fit renders more accurate results when it is based on the corneal wavefront aberrations rather than on the corneal topography of the principal meridians 27 .…”

Section: Discussionmentioning

confidence: 99%

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Corneal-Wavefront guided transepithelial photorefractive keratectomy after corneal collagen cross linking in keratoconus

Camellin¹,

Guidotti²,

Arba-Mosquera

2017

Journal of Optometry

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PurposeTo evaluate the efficacy and safety of Corneal-Wavefront guided transepithelial photorefractive keratectomy (TransPRK) after corneal collagen cross linking (CXL) in keratoconic patients.MethodsIn this retrospective, non-comparative, consecutive case series, 39 keratoconic eyes underwent Corneal-Wavefront guided TransPRK for the correction of aberrations at least 4 months after conventional CXL at SEKAL Rovigo Microsurgery Centre, Rovigo, Italy. Two eyes (5%) underwent a secondary laser retreatment for the improvement of post-operative visual acuity and were not included in this retrospective analysis. The mean age of the patients was 35 ± 12 years (19–64 years) at the time of the surgery. Keratron-Scout (Optikon) topographer was used for diagnostic tests and a flying-spot laser (AMARIS; SCHWIND eye-tech-solutions) was used for the refractive surgery. Complete ophthalmic examinations were performed before and after the surgery (4–36 months postoperatively with a mean follow up time of 10 ± 8 months).ResultsPreoperatively, eyes showed irregular astigmatism up to 8D. At last postoperative follow-up, 21 eyes (57%) had UDVA better than 20/40, and six eyes (16%) had UDVA of 20/20. Twenty-three eyes (62%) were within 1.50D of attempted correction in spherical equivalent (mean deviation from target was +1.09 ± 2.36D, range −2.50 to +7.38D). No eye lost 2 Snellen lines of CDVA, and 15 eyes (41%) had an increase of more than 2 lines.ConclusionsCorneal-Wavefront guided transepithelial PRK ablation profiles after conventional CXL yields to good visual, optical, and refractive results. These treatments are safe and efficacious for the correction of refracto-therapeutic problems in keratoconic patients.

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Section: Discussionmentioning

confidence: 99%

“…All the patients were treated with corneal wavefront-guided ablation profiles 18 calculated using the ORK-CAM software module 19 (SCHWIND eye-tech-solutions). A defined epithelial thickness profile 20 (55 μm in the centre and 65 μm at 4 mm radial distance) was ablated without using any masking fluid.…”

Section: Methodsmentioning

confidence: 99%

Corneal-Wavefront guided transepithelial photorefractive keratectomy after corneal collagen cross linking in keratoconus

Camellin¹,

Guidotti²,

Arba-Mosquera

2017

Journal of Optometry

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“…50,54 All statistical tests were performed using the software package SPSS v. 19.0 for Windows (SPSS Inc, Chicago, IL). & Subjects stratified by age: 25 years or younger (n = 88), 25 to 45 years (n = 67), and 45 years or older (n = 22).…”

Section: Discussionmentioning

confidence: 99%

“…The TM was measured according to defined criteria 19,34 in its central portion (at 6 o'clock) as the distance between the darker edge of the lower eyelid and the upper limit of the TM using ImageJ. The TMH was marked using the straight tool, which allows the user to draw a line (Fig.…”

Section: Objective Measurement Of Tmhmentioning

confidence: 99%

“…15 Tear meniscus height is routinely measured by eye care practitioners through slit-lamp biomicroscopy. 19,21,24,25,27 However, using this method, it is difficult to distinguish the upper limit of the tear meniscus (TM) during eye movement. 19Y22,26Y30 The most widely used method involves image capture of the meniscus using a camera attached to a slit lamp, and TMH measurements may be quantified by software assistance.…”

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Correlation between Tear Osmolarity and Tear Meniscus

García-Resúa¹,

Pena-Verdeal²,

Remeseiro³

et al. 2014

Optometry and Vision Science

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Tear film layers and meibomian gland assessment in patients with type 1 diabetes mellitus using a noninvasive ocular surface analyzer: a cross-sectional case–control study

Silva‐Viguera

Pérez-Barea

Bautista‐Llamas

2022

Graefes Arch Clin Exp Ophthalmol

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Purpose To assess the tear film layers and Meibomian glands by a noninvasive ocular surface analyzer in patients with and without type 1 diabetes mellitus (T1DM). Methods Eighty-eight participants were enrolled in this study: 44 patients with T1DM without diabetic retinopathy, and 44 patients as a control group, between 18 and 49 years old. Limbal and bulbar redness classification, lipid layer thickness (LLT), tear meniscus height (TMH), first and mean noninvasive tear break-up time (FNIBUT and MNIBUT, respectively), and Meibomian glands loss (MGL) were assessment through the ICP Ocular Surface Analyzer (OSA). Schirmer’s I test (SIT), the fluorescein tear break-up time test (TFBUT), OSDI and SPEED questionnaires, and percentage of glycosylated hemoglobin (HbA1c) were also tested. Results The T1DM group showed higher limbal and bulbar redness (p = 0.010) and lower LLT (p < 0.001), TMH (p < 0.001), FNIBUT (p < 0.001), MNIBUT (p < 0.001), SIT (p = 0.001), and TFBUT (p < 0.001) than the control group. A higher percentage of MGL was found in the T1DM group in the upper (p = 0.097) and lower (p < 0.001) eyelids. No significant differences were found in dry eye symptoms across the OSDI and SPEED questionnaires between the two groups. Conclusion Patients with T1DM without signs of retinopathy showed involvement of the mucoaqueous and lipid layers of the tear film, as well as a higher percentage of MGL, using a noninvasive analyzer. Dry eye disease in people with T1DM cannot be ruled out by anamnesis and subjective symptom questionnaires alone; therefore, these patients should undergo regular anterior pole examinations.

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Clinical assessment of the lower tear meniscus height

Abstract: Careful instillation of fluorescein does not affect normal TMH values. Fluorescein is washed out from the lower tear meniscus 5 min after instillation. Higher values of the TMH can be found at nasal and temporal locations compared to the center of the lower eye lid.

Cited by 35 publications

References 48 publications

Corneal-Wavefront guided transepithelial photorefractive keratectomy after corneal collagen cross linking in keratoconus

Corneal-Wavefront guided transepithelial photorefractive keratectomy after corneal collagen cross linking in keratoconus

Correlation between Tear Osmolarity and Tear Meniscus

Tear film layers and meibomian gland assessment in patients with type 1 diabetes mellitus using a noninvasive ocular surface analyzer: a cross-sectional case–control study

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